CN107098550A - Sludge solidifying agent and utilize its solidfied material preparation method - Google Patents
Sludge solidifying agent and utilize its solidfied material preparation method Download PDFInfo
- Publication number
- CN107098550A CN107098550A CN201710097462.3A CN201710097462A CN107098550A CN 107098550 A CN107098550 A CN 107098550A CN 201710097462 A CN201710097462 A CN 201710097462A CN 107098550 A CN107098550 A CN 107098550A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- weight
- parts
- solidifying agent
- sludge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/008—Sludge treatment by fixation or solidification
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/78—Recycling of wood or furniture waste
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
Abstract
The present invention relates to sludge solidifying agent and utilize its solidfied material preparation method, in more detail, stench and reduction moisture content can not only be improved by reducing the discharge of the ammonia produced by high alkalinity by being related to, also include have the feature of environmental protection, and the cement bonding agent that resource can be recycled sludge solidifying agent and utilization its solidfied material preparation method.
Description
Technical field
The present invention relates to sludge solidifying agent and using its solidfied material preparation method, in more detail, being related to can not only pass through
The discharge of ammonia that produces by high alkalinity is reduced to improve stench and reduction moisture content, also comprising with the feature of environmental protection, and can be with
The sludge solidifying agent of the cement bonding agent recycled to resource and utilize its solidfied material preparation method.
Background technology
The high sewage sludge of moisture content, wastewater sludge, clean water sludge, dredge sludge and clay sludge are as representational ring
Above-mentioned environmental pollutants are handled by border polluter in the case of in the past by methods such as ocean dumping, landfills,
And current actual conditions are just to study the kinds of schemes for being recovered to the environment being contaminated by polluter.
As one, South Korea forbids the daily row to more than 6000t in common refuse landfill since in July, 2003
The domestic sewage sludge put is handled, even being easiest to the ocean dumping mode of processing, also Yin Lundun topples over pact and only limited
Allow untill 2011.
For the small South Korea of area, in order to prevent surrounding environment to be contaminated and because being produced from sludge
Raw infiltration and be contaminated environment, should be badly in need of exploring effective and safe processing method.
Currently, the national local government including landfill yard is enclosed in Seoul is ready for consolidating for manufacture of intraocular soil
Change facility, manufactured by reducing the moisture content of high-moisture-contensludge sludge and can be used as cover soil material, hilling material, waterproof material, backfill
The above-mentioned artificial soil of the multiple types of floors material such as material, in consideration of it, actual conditions are, it is necessary to which develop can be effectively to washiness
Sludge carry out curing process, and with outstanding productivity, the curing agent of economy.
On the other hand, at present used in most of curing agent absorbed for induction and heating CaO classes basic matterial or
FeSO4Class acid material, thus actual conditions are, in terms of the reduction stench for turning into maximum difficult point in Treatment of Sludge at present
Compare fragile.
If the stench for the sludge for being about 80% or so to moisture content is analyzed, 50 many kinds of substance are detected, wherein, sulphur
Compound and aldehyde compound, the concentration of nitrogen compound are higher, and are produced in the way of compound, thus judge because these are compound
It is smelly and produce stench.
Also, there are the following problems for the conventional research to sludge solidifying agent, i.e. because main strong using quick lime, cement etc.
Basic matterial and the problem of produce smell and again precipitatedization, in addition, attempt to make up above mentioned problem by chasing after
Plus put into the acid materials such as the sulfuric acid and ferrous sulfate of high price to reduce the discharge of ammonia, but because of the price of input raw material
Height, so as to lack economy.Also, in order to make up the defect in terms of above-mentioned material, it is intended to by implementing drying to processing unit
And conserve to solve problem, but itself there is the structure for producing high cost due to handling, thus actual conditions are difficult so that heating
Maintenance factory swimmingly runs.
Especially, to lime stone (CaCO3, CaOCO2) CO2In the calcination process decomposed, cement and quick lime
The carbon dioxide of about 0.55 ton of discharge, thus when being burnt in plasticity process to fossil-fueled material, cement and raw stone
The carbon dioxide of about 0.40 ton of ash discharge, when as a result often producing 1 ton of cement and quick lime, the carbon dioxide of about 1 ton of discharge, because
And in atmosphere, CO2Concentration and the output of cement and quick lime have very high relevance.
Prior art literature
Patent document
Patent document 1：KR 10-2014-0097084 A
The content of the invention
The present invention proposes to solve above-mentioned problem of the prior art, it is an object of the present invention to provide can not only lead to
The discharge of ammonia that reduction produces by high alkalinity is crossed to improve stench and reduction moisture content, also comprising with the feature of environmental protection, and can
With the sludge solidifying agent of the cement bonding agent recycled to resource.
Another object of the present invention is to there is provided the solidfied material preparation method using above-mentioned sludge solidifying agent.
In order to solve the above problems, the present invention provides following sludge solidifying agent, i.e. comprising alkaline agent, oxidant, cement,
Cement bonding agent, papermaking incendiary material, lignocellulosic biomass incendiary material and bituminous coal combustion material, comprising 30 percentage by weights~
The calcium oxide (CaO) of 85 percentage by weights, above-mentioned cement bonding agent derives from discarded concrete.
In the preferably embodiment of the present invention, relative to the alkaline agent of 100 parts by weight, above-mentioned sludge solidifying agent can be included
The parts by weight of the cement of the parts by weight of the oxidants of the parts by weight of 100 parts by weight~500,100 parts by weight~500,400 parts by weight~500
Cement bonding agent, the papermaking incendiary material of the parts by weight of 100 parts by weight~300, the wooden class of the parts by weight of 400 parts by weight~500
The bituminous coal combustion material of the parts by weight of biomass combustion material and 100 parts by weight~500.
In the preferably embodiment of the present invention, above-mentioned alkaline agent can be selected from by light dolomite, quick lime and oil
Jiao burns one or more of group of material combustion thing composition.
In the preferably embodiment of the present invention, above-mentioned lignocellulosic biomass incendiary material can be selected from being fired by palm shell
Burn material, cocoanut shell incendiary material, sawdust incendiary material, wood substance grain incendiary material, straw incendiary material, corn stalk burning
One or more of group of material, oak branch incendiary material and chaff incendiary material composition.
In the preferably embodiment of the present invention, above-mentioned lignocellulosic biomass incendiary material can be palm shell burning material
The mixed combustion material of material, cocoanut shell incendiary material and sawdust incendiary material, above-mentioned mixed combustion material can be with 1:3~5:4
~7 weight ratio includes palm shell incendiary material, cocoanut shell incendiary material and sawdust incendiary material.
In the preferably embodiment of the present invention, the specific surface area of above-mentioned lignocellulosic biomass incendiary material can be
4000cm2/ g~6000cm2/g。
In the preferably embodiment of the present invention, above-mentioned lignocellulosic biomass incendiary material and bituminous coal combustion material can be with
5~8:2~5 weight ratio is contained in above-mentioned sludge solidifying agent.
In the preferably embodiment of the present invention, above-mentioned oxidant can be selected from by soda alum, potassium alum and aluminum sulfate
One or more of group of composition.
In the preferably embodiment of the present invention, above-mentioned sludge solidifying agent can also be included and is selected from by flyash, silica sand powder
And one or more of the group additive of lime powder composition, relative to the alkaline agent of 100 parts by weight, above-mentioned sludge solidifying agent is included
The above-mentioned additive of the parts by weight of 100 parts by weight~500.
In the preferably embodiment of the present invention, above-mentioned sludge solidifying agent can also include flyash, silica sand powder and lime
Powder, above-mentioned flyash, silica sand powder and lime powder are with 1:1~2:1~2 weight ratio is contained in above-mentioned sludge solidifying agent
In.
In the preferably embodiment of the present invention, above-mentioned flyash, silica sand powder and lime powder can have independently of one another
There is 0.1 μm~10 μm of particle mean size.
In the preferably embodiment of the present invention, above-mentioned sludge solidifying agent can also be comprising one kind in agglutinant and defoamer
More than.
In the preferably embodiment of the present invention, the density of above-mentioned cement bonding agent can be 2.0g/cm3~2.5g/cm3。
In the preferably embodiment of the present invention, the porosity of above-mentioned cement bonding agent can be 30%~50%.
In the preferably embodiment of the present invention, the specific surface area of above-mentioned sludge solidifying agent can be 1000cm2/ g~
5000cm2/g。
Also, the present invention provides the preparation method of following solidfied material, the preparation method of above-mentioned solidfied material includes：100
Mixed in the sludge of parts by weight the parts by weight of 20 parts by weight~70 claim 1 sludge solidifying agent to prepare mixture the step of
(step 1)；And to said mixture implement conserve the step of (step 2).
In the preferably embodiment of the present invention, can relative to 100 parts by weight alkaline agent, to the weight of 100 parts by weight~500
Part oxidant, the cement of the parts by weight of 100 parts by weight~500, cement bonding agent, 100 weights of the parts by weight of 400 parts by weight~500
Measure the lignocellulosic biomass incendiary material and 100 of the parts by weight of the papermaking incendiary materials of the parts by weight of part~300,400 parts by weight~500
The bituminous coal combustion material of the parts by weight of parts by weight~500 is mixed to prepare above-mentioned sludge solidifying agent.
In the preferably embodiment of the present invention, above-mentioned cement bonding agent can be made by the method comprised the following steps
It is standby：Step a, discarded concrete attritive powder is prepared by crushing discarded concrete；Step b, it is micro- to above-mentioned discarded concrete
Fine powder is washed；Step c, is heat-treated to the above-mentioned discarded concrete attritive powder by washing；And step d,
Cement bonding agent is separated from discarded concrete attritive powder after by above-mentioned heat treatment, in above-mentioned steps b, is being carried out
Include before washing by adding the step of agglutinant and defoamer are to be mixed in discarded concrete attritive powder.
, can be so that the fines content of discarded concrete reaches in above-mentioned steps a in the preferably embodiment of the present invention
3000cm2/ g~5000cm2/ g mode is crushed.
In the preferably embodiment of the present invention, the washing in above-mentioned steps b can be carried out using watering sieve, be spilt above-mentioned
, can be with 2kg/cm during water2~4kg/cm2Pressure condition enter horizontal high voltage watering.
, can be using spin-drier come 400 DEG C~800 in the above-mentioned steps c of the preferably embodiment of the present invention
DEG C temperature conditionss under be heat-treated.
, can also be to selected from by papermaking incendiary material, flyash, silica sand powder, stone in the preferably embodiment of the present invention
One or more of the group of grey powder, agglutinant and defoamer composition material is mixed to prepare above-mentioned sludge solidifying agent.
In the preferably embodiment of the present invention, above-mentioned maintenance can be normal temperature maintenance or heating curing.
Also, the present invention provides the solidfied material prepared by the preparation method of above-mentioned solidfied material.
It is upper after the process determined according to KS F 2343 maintenance in 24 hours in the preferably embodiment of the present invention
The compressive strength for stating solidfied material is 0.9kgf/cm2~1.2kgf/cm2, the pressure of the above-mentioned solidfied material after being conserved by 72 hours
Contracting intensity can be 1.2kgf/cm2~1.5kgf/cm2。
It is above-mentioned after the process determined according to KS F 2306 maintenance in 3 hours in the preferably embodiment of the present invention
The moisture content of solidfied material is 45% to 55%, the moisture content of the above-mentioned solidfied material after being conserved by 72 hours for 35%~
42%.
And then, the present invention provides the cover soil material for including above-mentioned sludge solidifying agent.
The sludge solidifying agent of the present invention contains substantial amounts of calcium oxide, thus by with included in the water of sludge reacted come
Hydration reaction is easily produced, so that the moisture content of sludge is effectively reduced, and due to comprising with specific density and porosity
Cement bonding agent, so as to can not only have outstanding water absorption rate, can also have outstanding cohesive force, in addition, can be by
The heat of neutralization that is produced by alkaline agent and oxidant more effectively reduces moisture content.
Also, the preparation method of the solidfied material of the present invention utilizes above-mentioned sludge solidifying agent, both can be effective so as to prepare
Water content is reduced, the solidfied material with outstanding compressive strength.
Embodiment
Hereinafter, for the ease of understanding the present invention, the present invention is described in more details.
Must not be to the term or word used in this specification and the claimed scope of invention with usual property or dictionary
Property implication to limit is explained, but should illustrate based on inventor in optimal method its own invention and can
Solved with suitably giving a definition the concept of term for principle with meeting the implication and concept of the technology of the present invention thought
Release.
The present invention provides the sludge solidifying agent with outstanding deodorization and moisture content reducing effect.
The high sewage sludge of moisture content, wastewater sludge, clean water sludge, dredge sludge and clay sludge are as representational ring
Above-mentioned environmental pollutants are handled by border polluter in the case of in the past by methods such as ocean dumping, landfills,
But it is positive real as the scheme that can be handled above-mentioned environmental pollutants as the methods such as ocean dumping and landfill are prohibited
Apply and carry out curing process to sludge using curing agent to can be used as the solidified earth preparation scheme of cover soil material.
But, during handling a large amount of sludge, in order to both maintain the performance of curing agent, stench is controlled again,
And there is the problem of curing agent price steeply rises.
Therefore, the present invention, which is provided, both has outstanding economy, there is outstanding deodorization and moisture content reducing effect again
Sludge solidifying agent.
The above-mentioned sludge solidifying agent of one embodiment of the invention can comprising alkaline agent, oxidant, cement, cement bonding agent, make
Paper incendiary material, lignocellulosic biomass incendiary material and bituminous coal combustion material, can include the weight percent of 30 percentage by weights~85
The calcium oxide (CaO) of ratio, above-mentioned cement bonding agent can derive from discarded concrete.
Specifically, above-mentioned sludge solidifying agent can largely include foregoing calcium oxide, it is preferable that can include 50 weights
Measure the calcium oxide of the percentage by weight of percentage~80.
Above-mentioned calcium oxide can be reacted by absorbing, generating heat and expand and as water oxygen with being contained in the water of sludge
Change calcium.To this relevant reaction equation such as formulas below 1.
Reaction equation 1
CaO+H2O->Ca(OH)2+15.6mol-1
Specifically, above-mentioned calcium oxide can generate water oxygen calcium by the reaction of such as above-mentioned reaction equation 1, so as to produce hyperpyrexia
Amount, thus can reduce the moisture comprising sludge.
Also, the specific surface area of above-mentioned sludge solidifying agent can be 1000cm2/ g~5000cm2/ g, it is preferable that compare surface
Product can be 3000cm2/ g~5000cm2/g.It is less than 1000cm in above-mentioned specific surface area2In the case of/g, when the above-mentioned dirt of utilization
When mud curing agent to sludge to solidify, it can decline the reducing effect of moisture content, exceed in above-mentioned specific surface area
5000cm2In the case of/g, because apparent density declines, thus scattering can be formed in metering and transfer, thus may set
Problem is produced in terms of standby maneuverability.
Wherein, above-mentioned specific surface area represents the per unit mass of particle or the total surface area of unit volume, by using wheat
The 3Flex equipment of Ke Moruitike companies (Micrometrics) is come with by partial pressure (0.11 ＜ p/p0＜ 1) absorption nitrogen
Gas adsorbance is determined to above-mentioned specific surface area.
Hereinafter, each composition of the sludge solidifying agent to being contained in one embodiment of the invention is described in more details.
Above-mentioned alkaline agent is plays a part of producing neutralization reaction with water by being reacted, specifically, in above-mentioned alkaline agent
The content of calcium oxide (CaO) can be the percentage by weight of 30 percentage by weights~70.Preferably, the calcium oxide in above-mentioned alkaline agent
(CaO) content can be the percentage by weight of 30 percentage by weights~60.Also, above-mentioned alkaline agent can be selected from by light-burned white clouds
Stone, quick lime and petroleum coke burn one or more of group of material composition, but are not limited thereto.
Above-mentioned oxidant is together to play a part of producing neutralization reaction with above-mentioned alkaline agent, and includes its dirt by improving
The cohesive force of mud curing agent prevents sludge solidifying agent to be attached to equipment, thus plays a part of improving equipment maneuverability, above-mentioned
Oxidant can be selected from one or more of group being made up of soda alum, potassium alum and aluminum sulfate.
Specifically, relative to the alkaline agent of 100 parts by weight, above-mentioned sludge solidifying agent can include the parts by weight of 50 parts by weight~300
Above-mentioned oxidant.Preferably, the above-mentioned oxidant of the parts by weight of 100 parts by weight~200 can be included.In above-mentioned sludge solidifying agent bag
In the case of containing the above-mentioned oxidant less than 50 parts by weight, make the yield of the heat of neutralization few because fully not producing neutralization reaction,
Be also possible to realize reduction pH effect, in the case where comprising more than the above-mentioned oxidant of 300 parts by weight, because pH drastically under
Drop and the effect that reduction ammonia is presented, on the contrary, the problem of there may be with highly acid.
Above-mentioned cement (cement) represents to be solidified in hard mode when being stirred using water or solution, so that
The inorganic substances of stalemate agent or binding agent effect can be played, in above-mentioned cement, the content of calcium oxide (CaO) can be with for 30 weight
The percentage by weight of percentage~85.Preferably, in above-mentioned cement, the content of calcium oxide (CaO) can be 30 percentage by weights
~60 percentage by weights.It is solid in the sludge comprising above-mentioned cement in the case of calcium oxide of the above-mentioned cement comprising above range
In agent, calcium oxide can come adjusted with foregoing scope, thus can effectively reduce the moisture content of sludge.
Also, relative to the alkaline agent of 100 parts by weight, above-mentioned sludge solidifying agent can comprising 100 parts by weight~500 parts by weight
Above-mentioned cement, it is preferable that the above-mentioned cement of the parts by weight of 300 parts by weight~500 can be included, it is highly preferred that 400 parts by weight can be included
The above-mentioned cement of~500 parts by weight.
Above-mentioned cement bonding agent can be prepared by discarded concrete by preparation method described later.
Generally, although the incineration residue of discarded concrete can be recycled as concrete mixed material,
But by the characteristic for absorbing, generating heat and expanding with the calcium oxide being comprised in above-mentioned discarded concrete incineration residue, because
And there is the problem of being difficult to be used as concrete mixed material.Thus, the present invention is not used as by being separated from discarded concrete
The cement bonding agent of concrete mixed material is used, so as to provide improve while the advantage for improving economic aspect deodorization and
The sludge solidifying agent of moisture content reducing effect.
Specifically, represented by preparation method as be described hereinafter, above-mentioned cement bonding agent can be prepared by wet processed.With
It is past to have used following cement bonding agent, i.e. to have used the discarded concrete fine powder occurred when handling discarded concrete
Reclaimed and after heating, the cement bonding agent of cement composition is only isolated using difference in specific gravity, in the present invention in end
In, prepared importing after agglutinant and defoamer to above-mentioned discarded concrete attritive powder to wash and dry to baptizing in fact
Cement bonding agent,, can be according to the ratio surface of above-mentioned cement bonding agent when solidifying to sludge so as to increase specific surface area
Product makes moisture content reducing effect and except stench efficiency is adjusted.
The density of above-mentioned cement bonding agent can be 2.0g/cm3~3.0g/cm3.Preferably, above-mentioned density can be
2.0g/cm3~2.5g/cm3.It is highly preferred that above-mentioned density can be 2.1g/cm3To 2.4g/cm3。
Also, the porosity of above-mentioned cement bonding agent can be 30%~50%, it is preferable that porosity can for 30%~
45%.
Also, relative to the cement of 100 parts by weight, above-mentioned sludge solidifying agent can comprising 400 parts by weight~500 parts by weight
Above-mentioned cement bonding agent, it is preferable that the above-mentioned cement bonding agent of the parts by weight of 450 parts by weight~500 can be included.Containing less than
In the case of the above-mentioned cement bonding agent of 400 parts by weight, carried out when using the sludge solidifying agent comprising above-mentioned cement bonding agent
It during solidification, may decline moisture content reducing effect, in the case of containing the above-mentioned cement bonding agent of 500 parts by weight is had more than,
Odor removal efficient may be declined.
Come in papermaking process in order to reduce the usage amount of slurry and improve the quality of paper as filler (Filler)
In the lime stone attritive powder used, above-mentioned papermaking incendiary material is represented in the boiler to many additions for being discharged with sludge form
During lime stone attritive powder is burned, lime stone is by the high burning material of the calcium oxide content of decarburization acid.Relative to
The cement of 100 parts by weight, sludge solidifying agent can include the above-mentioned papermaking incendiary material of the parts by weight of 100 parts by weight~500.Relative
In the cement of 100 parts by weight, in the case that sludge solidifying agent includes the above-mentioned papermaking incendiary material less than 100 parts by weight, because micro-
The powder amount of the papermaking incendiary material of grain powder form is not enough and there is the viscosity increase for making sludge solidifying agent and mud mixture, and
Make the problem of reduced rate of moisture content declines, in the case of more than 500 parts by weight, may make because the produced heat of neutralization is few
Moisture evaporation effect declines, and because being contained in the calcium oxide component in incendiary material pH value may be made to increase, so as to
Decline the reducing effect of stench.
In the case, the specific surface area of above-mentioned papermaking incendiary material can be 1000cm2/ g~5000cm2/g.Than table
Area is less than 1000cm2In the case of/g, when sludge is cured, there is possibility makes the problem of moisture content reducing effect declines,
In specific surface area more than 5000cm2It in the case of/g, may decline the efficiency that curing agent removes stench.
On the other hand, if mixing contains the sludge of a large amount of calcium oxide in the high sludge of water content in the manner
Curing agent, then generate water calcium oxide because of the reaction of such as above-mentioned reaction equation 1, so that the moisture reduction of sludge, and because producing
Heat and be evaporated the moisture of sludge, so as to further reduction sludge moisture content.But because of this calcium oxide content
High material and the pH of curing agent is risen to more than 11.5, high ph-values can improve the generation of stench.
Therefore, because the sludge solidifying agent of the present invention includes lignocellulosic biomass incendiary material, thus stench can be suppressed
Produce.
Specifically, the pH of above-mentioned lignocellulosic biomass incendiary material can be 10~11, thus, solidify when to sludge implementation
When, pH rising degree is can adjust, so as to suppress the generation of stench.
Relative to the cement of 100 parts by weight, above-mentioned sludge solidifying agent can comprising 400 parts by weight~500 parts by weight it is above-mentioned
Lignocellulosic biomass incendiary material, it is preferable that comprising 450 parts by weight~500 parts by weight be advisable.In the combustion of above-mentioned lignocellulosic biomass
In the case of the content disengaging above range for burning material, it may make to utilize the sludge for including above-mentioned lignocellulosic biomass incendiary material
The pH for the artificial soil that curing agent carries out curing process to prepare rises, it is thereby possible to make the effect that suppression stench is produced very
It is micro-.
Also, above-mentioned lignocellulosic biomass can be selected from by palm shell incendiary material, cocoanut shell incendiary material, sawdust combustion
Burn material, wood substance grain incendiary material, straw incendiary material, corn stalk incendiary material, oak branch incendiary material and chaff combustion
Burn one or more of group of material composition, it is preferable that above-mentioned lignocellulosic biomass incendiary material can be palm shell burning material
The mixed combustion material or cocoanut shell incendiary material of material, cocoanut shell incendiary material and sawdust incendiary material.
, can be with 1 in the case where above-mentioned lignocellulosic biomass incendiary material is above-mentioned mixed combustion material:3~5:4~
7 weight ratio includes palm shell incendiary material, cocoanut shell incendiary material and sawdust incendiary material.
Also, the specific surface area of above-mentioned lignocellulosic biomass incendiary material can be 4000cm2/ g~6000cm2/g.It is preferred that
Ground, the specific surface area of above-mentioned lignocellulosic biomass incendiary material can be 4500cm2/ g~5500cm2/g。
Also, relative to the cement of 100 parts by weight, above-mentioned sludge solidifying agent can comprising 100 parts by weight~500 parts by weight
Above-mentioned bituminous coal combustion material, it is preferable that the parts by weight of 300 parts by weight~500 can be included.
In the case, with 5~8 in above-mentioned sludge solidifying agent:2~5 weight ratio burns to include above-mentioned cocoanut shell
Material and bituminous coal combustion material, it is preferable that with 7~8:2~3 weight ratio fires to include above-mentioned cocoanut shell incendiary material and bituminous coal
Burn material.In the case where departing from above range, there is possibility makes the problem of reduction stench effect declines.
Also, the sludge solidifying agent of the present invention can also include and be selected from what is be made up of flyash, silica sand powder and lime powder
One or more of group powder.Above-mentioned flyash can be produced during thermal power generation is carried out using petroleum-type, due to upper
The pH for stating flyash is less than 5, thus can remove alkaline gas.Above-mentioned silica sand powder and lime powder containing as calcium oxide
The high material of amount, can be played a role to the moisture content reducing effect of curing agent of the present invention.
In the case, relative to the cement of 100 parts by weight, above-mentioned sludge solidifying agent can include the weight of 100 parts by weight~500
Measure the above-mentioned powder of part, it is preferable that the above-mentioned powder of the parts by weight of 300 parts by weight~500 can be included.Relative to 100 parts by weight
100 parts by weight cement, above-mentioned sludge solidifying agent include less than 100 parts by weight be selected from by above-mentioned flyash, silica sand powder
And in the case of one or more of the group powder of lime powder composition, when implementing solidification, moisture content reduction effect can be made by existing
The problem of fruit declines, in the case where above-mentioned sludge solidifying agent comprises more than the above-mentioned powder of 500 parts by weight, because of the production of the heat of neutralization
It is raw to decline moisture evaporation effect less, and may make because being contained in the calcium oxide component in incendiary material in pH value
Rise, so as to decline the reducing effect of stench.
Also, above-mentioned sludge solidifying agent can include above-mentioned flyash, silica sand powder and lime powder simultaneously, in this situation
Under, above-mentioned flyash, silica sand powder and lime powder can have 1:1~2:1~2 weight ratio.
Wherein, above-mentioned flyash, silica sand powder and lime powder can have 0.1 μm~10 μm of average grain independently of one another
Degree, it is preferable that above-mentioned flyash, silica sand powder and lime powder can have 1 μm~10 μm of particle mean size independently of one another.
Above-mentioned particle mean size is the value determined using laser diffraction and scattering sedimentograph.
Also, the above-mentioned sludge solidifying agent of one embodiment of the invention can also be as needed comprising in agglutinant and defoamer
More than one.
Above-mentioned agglutinant plays a part of agglutination particle, when using the sludge solidifying agent comprising above-mentioned agglutinant come to sludge
When implementing curing process, by increasing aggegation efficiency solidification can be made easily to realize.It is above-mentioned relative to the cement of 100 parts by weight
Sludge solidifying agent includes the above-mentioned agglutinant of the parts by weight of 5 parts by weight~10, it is preferable that can comprising 7 parts by weight~10 parts by weight
Above-mentioned agglutinant.
Above-mentioned defoamer plays a part of bubble removing, can be by suppressing in the sludge solidifying agent comprising above-mentioned defoamer
Bubble is excessively formed, so as to suppress to prepare by solidification after curing process is implemented using above-mentioned sludge solidifying agent
The intensity of solidfied material is too low.Relative to the cement of 100 parts by weight, above-mentioned sludge solidifying agent can comprising 10 parts by weight~30 parts by weight
Above-mentioned defoamer, it is preferable that the above-mentioned defoamer of the parts by weight of 10 parts by weight~20 can be included.Included in above-mentioned sludge solidifying agent
In the case of above-mentioned defoamer less than 10 parts by weight, because bubble removal efficiency is little, so as to make to eventually pass through solidification system
For the low intensity of the solidfied material gone out, in the case where above-mentioned sludge solidifying agent comprises more than the above-mentioned defoamer of 30 parts by weight, by
Excessively removed, so that porosity is remarkably decreased, thus may be made in the bubble of the sludge solidifying agent comprising above-mentioned defoamer
The reduction stench effect of above-mentioned sludge solidifying agent declines.
Also, the present invention provides the preparation method of the solidfied material using above-mentioned sludge solidifying agent.In the case, it is above-mentioned solid
The preparation method of compound is utilized differently in sludge curing treatment.
The preparation method of the above-mentioned solidfied material of one embodiment of the invention may include：20 are mixed in the sludge of 100 parts by weight
The step of above-mentioned sludge solidifying agent of the parts by weight of parts by weight~70 is to prepare mixture (step 1)；And it is real to said mixture
The step of applying maintenance (step 2).
Above-mentioned steps 1 prepare mixing as by adding sludge solidifying agent in the sludge to be solidified and being mixed
The step of thing, performed by mixing the sludge solidifying agent of the parts by weight of 20 parts by weight~70 in the sludge of 100 parts by weight.It is preferred that
Ground, can mix the sludge solidifying agent of the parts by weight of 30 parts by weight~60 in 100 parts by weight sludge.In the case, mixing small
In the case of the above-mentioned sludge solidifying agent of 20 parts by weight, possibly moisture content can not be made fully to decline, be mixed for more than 70 weight
Part above-mentioned sludge solidifying agent in the case of, because moisture content become it is too low may scatter mixture, and transfer may be made
And laying work etc. becomes difficult.
Above-mentioned sludge can be selected from being made up of sewage sludge, wastewater sludge, clean water sludge, clay sludge and sludge of dredging
One or more of group.
Relative to the alkaline agent of 100 parts by weight, oxidant that can be to the parts by weight of 50 parts by weight~500,100 parts by weight~500
The papermaking burning of the parts by weight of the cement bonding agents of the parts by weight of the cement of parts by weight, 400 parts by weight~500,100 parts by weight~300
The bituminous coal combustion of the parts by weight of the lignocellulosic biomass incendiary material of the parts by weight of material, 400 parts by weight~500 and 100 parts by weight~500
Burn material mixed to prepare above-mentioned sludge solidifying agent, can also to selected from by flyash, silica sand powder, lime powder, coagulate
One or more of group of collection agent and defoamer composition is mixed to be prepared from.Specific sludge solidifying agent and composition its
Composition can be for as previously described.
Wherein, above-mentioned cement bonding agent can be prepared from from discarded concrete by separation, and above-mentioned cement bonding agent can
Prepared by following methods.
Step a, discarded concrete attritive powder is prepared by crushing discarded concrete；
Step b, is washed to above-mentioned discarded concrete attritive powder；
Step c, is heat-treated to the above-mentioned discarded concrete attritive powder by washing；And
Step d, cement bonding agent is separated after by above-mentioned heat treatment from discarded concrete attritive powder.
Also, before the washing in carrying out above-mentioned steps b, it may include add aggegation in discarded concrete attritive powder
The step of agent and defoamer are to be mixed.
Hereinafter, by each step, the preparation method to above-mentioned cement bonding agent is specifically described.
Above-mentioned steps a removes the step of preparing attritive powder while foreign matter as by crushing discarded concrete, can
Foreign matter is removed from crushed material by crushing discarded concrete and reclaim dust, so as to prepare discarded concrete attritive powder.
In the case, can be by using selected from one or more of group being made up of disintegrating machine, pulverizer and grater
Device carries out above-mentioned crushing.
Above-mentioned disintegrating machine refers to the machinery for being crushed to solids such as rock or discarded objects, as long as can be made into required
Attritive powder, it is possible to use with being not particularly limited, for example, can be used rotary shear shredder, rotary impact disintegrating machine,
It is compressed to crush machine and sieve formula disintegrating machine.
Above-mentioned pulverizer refers to the machinery for subtly comminuted solids, as long as can be made into required attritive powder, just
Use with being not particularly limited, for example, jaw crusher (coarse crushing), roller pulverizer (in broken) or air-flow crushing can be used
Machine.
Above-mentioned grater refers to the machinery for solids such as imperceptibly crushed rock or ores, as long as can be made into required
Attritive powder, it is possible to use with being not particularly limited, for example, large-scale rod mill, ball mill, taper roller mill, three can be used
Bevel-type grinding machine or attritor.
On the other hand, the above-mentioned crushing of one embodiment of the invention can will as previously described be broken according to required attritive powder
Broken machine, pulverizer and grater are used by combining.For example, after first break can be carried out by using disintegrating machine again
Using pulverizer or grater finer attritive powder is obtained to carry out second of crushing to it.
Specifically, foregoing device can be used so that the fines content of discarded concrete reaches 3000cm2/ more than g
Mode carry out above-mentioned crushing.Preferably, can be so that the fines content of discarded concrete reaches 3000cm2/ g~5000cm2/ g's
Mode carries out above-mentioned crushing.
Wherein, above-mentioned fines content (fineness) is as the yardstick of the fine degree for representing powder, and fines content is higher,
Then more it is improved hydration reaction.On the other hand, by using fines content testing machine S1-510 (Blaine Air-
Permeabillity Apparatus) above-mentioned fines content is determined.
Also, above-mentioned discarded concrete attritive powder can have 10 μm~2000 μm of particle mean size.Preferably, it is above-mentioned useless
10 μm~1000 μm of particle mean size can be had by abandoning concrete attritive powder.
Above-mentioned steps b, can profit as by washing the step of above-mentioned discarded concrete attritive powder is to remove remaining foreign matter
Above-mentioned washing is carried out with watering sieve.
Above-mentioned washing can be repeated more than twice at normal temperatures using watering sieve.In the case, above-mentioned normal temperature can
The temperature of 15 DEG C~35 DEG C of expression.Specifically, can be in 2kg/cm2~4kg/cm2Pressure condition under carried out in the way of high pressure
Above-mentioned watering.In the case of entering horizontal high voltage watering under above-mentioned pressure condition, can more easily it be washed, so as to have
Effect removes foreign matter.
In the case, as long as can easily implement required washing, it is possible to use with being not particularly limited, example
Such as, watering vibratory sieve can be used.
Specifically, above-mentioned watering sieve can include：Conveyer belt, for transferring sieve；For placing discarded concrete fine powder
The sieve at end；And cleaning water discharge apparatus, for above-mentioned discarded concrete attritive powder jet cleaning water.Now, above-mentioned
In the case that watering sieve is watering vibratory sieve, above-mentioned sieve can be vibratory sieve.Above-mentioned discarded concrete attritive powder is to be positioned over
State on sieve is transferred by conveyer belt, and is washed by the washings sprayed by cleaning water discharge apparatus.
Also, in the case where above-mentioned sieve is vibratory sieve, above-mentioned discarded concrete fine powder is transferred by the up-down vibration of vibratory sieve
End, and more easily washed because of drop.
Also, in the preparation method of one embodiment of the invention, it can also be included in before above-mentioned washing step discarded mixed
By adding the step of one or more of defoamer and agglutinant material are to be mixed in solidifying soil attritive powder.
In the case, above-mentioned defoamer and agglutinant play suppression bubble simultaneously in the cement bonding agent finally prepared
The effect of the cohesive force of particle is improved, the specific surface area of cement bonding agent can be increased by importing above-mentioned agglutinant.
Relative to the discarded concrete attritive powder of 100 parts by weight, can comprising 5 parts by weight~10 parts by weight above-mentioned aggegation
Agent, it is preferable that the above-mentioned agglutinant of the parts by weight of 7 parts by weight~10 can be included.Above-mentioned agglutinant is not particularly limited, and can basis
The purpose to be reached use in the technical field of the invention generally well known to agglutinant.
Also, relative to the discarded concrete attritive powder of 100 parts by weight, can comprising 10 parts by weight~30 parts by weight it is upper
State defoamer, it is preferable that the above-mentioned defoamer of the parts by weight of 10 parts by weight~20 can be included.Discarded relative to 100 parts by weight
Concrete attritive powder, in the case of the above-mentioned defoamer less than 10 parts by weight, the bubble of inside particles is not almost gone
Remove, thus porosity may be made too high, the intensity of the sludge solidifying agent comprising above-mentioned defoamer can thus declined.On the contrary,
Relative to the discarded concrete attritive powder of 100 parts by weight, in the case of the above-mentioned defoamer for comprising more than 30 parts by weight, due to
Bubble is excessively removed, thus declines the deodorizing effect of the sludge solidifying agent comprising above-mentioned defoamer, and because using froth breaking
Agent and price is increased, the problem of so as to occur economy decline.Above-mentioned defoamer is not particularly limited, and can be according to institute
The purpose to be reached use in the technical field of the invention generally well known to defoamer.
Preferably, in above-mentioned preparation method, by adding aggegation in discarded concrete attritive powder before washing
Agent and defoamer are mixed, in the case, can be with 1:1~6 weight ratio adds above-mentioned agglutinant and defoamer.
Above-mentioned steps 3 are entered to remove remaining fine foreign matter to the above-mentioned discarded concrete attritive powder by washing
The step of row heat treatment, in above-mentioned steps 3, spin-drier can be used to enter under 400 DEG C~1000 DEG C of temperature conditionss
The above-mentioned heat treatment of row.
Specifically, the above-mentioned heat treatment of one embodiment of the invention carrys out the temperature in above range by using spin-drier
Degree is lower to be heat-treated, so as to carry out plasticity while moisture content by drying to reduce, thus can further be removed remaining micro-
Thin foreign matter.
Above-mentioned spin-drier may include rotary body, breaker, heat-producing unit, arrangements for speed regulation and temperature-adjusting device
One or more of device.
Wherein, above-mentioned rotary body can load the dry material of needs (by the discarded concrete attritive powder of washing), and
The material dried with above-mentioned needs is rotated together with, and rotary body can have multiple micropores.
Above-mentioned breaker in heat treatment while rotated, while can be in order to prevent the aggegation of particle and further
Crush by the particle of aggegation.
Above-mentioned heat-producing unit can for the temperature to be reached correspondingly in rotary body produce heat device.
The rotary speed of rotary body can be adjusted for above-mentioned arrangements for speed regulation, said temperature adjusting means can be with it is upper
Heat-producing unit is stated to be connected come the device being adjusted in the way of producing heat according to temperature.
Above-mentioned heat treatment is carried out by using above-mentioned spin-drier, specifically, can be at 600 DEG C~800 DEG C
Above-mentioned heat treatment is carried out under temperature conditionss.Preferably, the cement bonding agent finally prepared under foregoing temperature conditionss can be made
Moisture content turn into be less than 85% when untill carry out above-mentioned heat treatment.It is highly preferred that the moisture content of above-mentioned cement bonding agent can be made
As carrying out above-mentioned heat treatment untill when 50%~80%.
Also, above-mentioned steps 4 prepare water as by separating cement Binder Composition from discarded concrete attritive powder
The step of mud binding agent, in above-mentioned steps 4, above-mentioned separation is carried out using dust arrester.
Wherein, the discarded concrete attritive powder of one embodiment of the invention can include sand and cement bonding agent composition, lead to
Cross above-mentioned separation to make sand be separated from each other with cement bonding agent, so as to obtain sand and cement bonding agent respectively.
Above-mentioned dust arrester can by be connected with spin-drier come run spin-drier during simultaneously
Separated, or can be separated after being heat-treated using spin-drier using extra dust arrester.
Above-mentioned dust arrester can for gravitational collector, inertia dust centrifugal force dust arrester, filter dust collector, washing collect
Dirt device or electrostatic (electric dust) precipitator, but be not limited thereto.
The step of above-mentioned steps 2 to mixture as by implementing to conserve to prepare solidfied material, in step 2 above, can
Said mixture is implemented untill making the moisture content of said mixture when turning into below 60 percentage by weights to conserve.In this situation
Under, above-mentioned maintenance can be normal temperature maintenance or heating curing.
Maintenance is implemented in above-mentioned normal temperature maintenance at normal temperatures, and above-mentioned normal temperature can be normal temperature as described above.Above-mentioned heating is supported
Shield can be at a high temperature of normal temperature be relatively higher than, for example, can implement maintenance by applying 65 DEG C of temperature.
In the preparation method of the solidfied material of one embodiment of the invention, entered by using foregoing sludge solidifying agent
Row curing process, so as to adjust pH, thus both blocked from root and the stenches such as ammonia odor is produced because of high alkalinity, can make again
It is standby to go out easily to reduce the solidfied material of moisture content.
Specifically, in the preparation method of above-mentioned solidfied material, the yield of ammonia can be in the preparation process of solidfied material
3ppm~10ppm.
In the case, the gas produced by during in the absorption bottle of 0.5% boric acid solution equipped with 250ml prepared by trapping
Afterwards, it is measured by the neutralization titration using sulfuric acid solution and the generation of ammonia is calculated by following mathematical expression 1
Amount.
Mathematical expression 1
In above-mentioned mathematical expression 1, C is the concentration (ppm) of ammonia, and a is the consumption (ml) of N/10 sulfuric acid, and b is based on blank
The consumption (ml) of the N/10 sulfuric acid of experiment, f is the titre of N/10 sulfuric acid, and Vs is the gas flow (L) for drying sample, and V is represented point
The extracted amount (ml) of analysis sample solution.
Also, the present invention provides the solidfied material prepared by above-mentioned preparation method.
The above-mentioned solidfied material of one embodiment of the invention can be curing soil or artificial soil.
Specifically, the compressive strength of the above-mentioned solidfied material after the process determined according to KS F 2343 maintenance in 24 hours
Can be 0.9kgf/cm2~1.2kgf/cm2, can be in the compressive strength of the above-mentioned solidfied material after maintenance in 72 hours
1.2kgf/cm2~1.5kgf/cm2。
Also, the moisture content of the above-mentioned solidfied material after the process determined according to KS F 2306 maintenance in 3 hours can be
45% to 55%, can be 35%~42% in the moisture content of the above-mentioned solidfied material after maintenance in 72 hours.
Wherein, above-mentioned KS F 2306 represent the cumulative water-oil ratio test method of the soil provided by industry standard association of South Korea
Specification, above-mentioned KS F 2343 represent the direct shearing of soil under densification drainage condition provided by industry standard association of South Korea
The specification of test method.
Also, the present invention provides the cover soil material for including above-mentioned sludge solidifying agent.
Hereinafter, the present invention is described in more details by following examples.In the case, following examples are only
Proposed only for illustrating the present invention, interest field of the invention is not limited to following examples.
Embodiment 1
Quick lime, the soda alum of 200 parts by weight, the cement of 100 parts by weight, the cement of 400 parts by weight to 100 parts by weight
(density is 2.0g/cm to binding agent3, porosity be 50%), the wooden class of the papermaking incendiary material of 200 parts by weight, 400 parts by weight
(specific surface area is 5000cm to biomass combustion material2/ g) and 100 parts by weight bituminous coal combustion material equably mixed come
Prepare sludge solidifying agent.In the case, as above-mentioned biomass combustion material, used with 1:3:4 weight ratio is wrapped
The mixed combustion material of incendiary material containing palm shell, cocoanut shell incendiary material and sawdust incendiary material.Also, by that discarded will mix
Solidifying soil is ground into 3500cm2Washed after/g fines contents using watering sieve, and until moisture content turns into 70% at 600 DEG C
When untill be heat-treated, be dried afterwards and implement separation using dust arrester and prepare above-mentioned cement bonding agent.
Mixed in the sewage sludge of 100 parts by weight with 85% water content 20 parts by weight above-mentioned sludge solidifying agent it
Implement normal temperature maintenance untill when moisture content turns into 60% afterwards to prepare solidfied material.
Embodiment 2
In addition to using 500 parts by weight of cement binding agents, to prepare solidification with the identical method of above-described embodiment 1
Thing.
Embodiment 3
Except the use of density being 2.5g/cm3, porosity for 30% cement bonding agent outside, with the phase of above-described embodiment 1
With method prepare solidfied material.
Embodiment 4
Except being used as biomass combustion material with 1:5:7 weight ratio includes palm shell incendiary material, coconut
Outside the mixed combustion material of shell incendiary material and sawdust incendiary material, to be prepared with the identical method of above-described embodiment 1
Solidfied material.
Embodiment 5
Except adding flyash, silica sand powder and lime powder using 300 parts by weight altogether when preparing sludge solidifying agent
Outside, to prepare solidfied material with the identical method of above-described embodiment 1.In the case, 1:1:1 weight ratio is used
Above-mentioned flyash, silica sand powder and lime powder.
Embodiment 6
Except adding flyash, silica sand powder and lime powder using 300 parts by weight altogether when preparing sludge solidifying agent
Outside, to prepare solidfied material with the identical method of above-described embodiment 1.In the case, with 1:2:2 weight ratio is used
Above-mentioned flyash, silica sand powder and lime powder.
Embodiment 7
It is solid to be prepared with the identical method of above-described embodiment 1 in addition to using the sludge solidifying agent of 70 parts by weight
Compound.
Comparative example 1
In addition to cement bonding agent is not used, to prepare solidfied material with the identical method of above-described embodiment 1.
Comparative example 2
It is solid to be prepared with the identical method of above-described embodiment 1 in addition to using the cement bonding agent of 300 parts by weight
Compound.
Comparative example 3
It is solid to be prepared with the identical method of above-described embodiment 1 in addition to using the cement bonding agent of 600 parts by weight
Compound.
Comparative example 4
Except the use of density being 1.5g/cm3, porosity for 60% cement bonding agent outside, with the phase of above-described embodiment 1
With method prepare solidfied material.
Comparative example 5
Except the use of density being 3.5g/cm3, porosity for 20% cement bonding agent outside, with the phase of above-described embodiment 1
With method prepare solidfied material.
Comparative example 6
In addition to biomass combustion material is not used, to prepare solidfied material with the identical method of above-described embodiment 1.
Comparative example 7
It is solid to be prepared with the identical method of above-described embodiment 1 in addition to using the sludge solidifying agent of 15 parts by weight
Compound.
Comparative example 8
It is solid to be prepared with the identical method of above-described embodiment 1 in addition to using the sludge solidifying agent of 80 parts by weight
Compound.
Experimental example 1：To the measure of change of moisture content
To each solidfied material for being prepared in 1~embodiment of above-described embodiment 7 and 1~comparative example of comparative example 8 based on when
Between water-cut variation be determined.In the case, water-cut variation is implemented according to the methods of KS F 2306, and with
Result is shown in table 1 below.
Table 1
As shown in Table 1 above, the moisture content of the solidfied material of the 1~embodiment of embodiment 7 of one embodiment of the invention is confirmed
Efficiently reduce over time.
Specifically, in an embodiment of the present invention, in the embodiment 1 to only being had differences in sludge solidifying agent usage amount
And the result that the solidfied material comparative example 7 of embodiment 7 and the solidfied material of comparative example 8 are compared, confirm over time,
The solidfied material of embodiment 1 and embodiment 7 is efficiently reduced with the moisture content of proper level, but the dirt of the solidfied material of comparative example 7
Sewage sludge water content is not reduced effectively, and the solidfied material of comparative example 8 its moisture content after mixing drastically declines, from
And produce the problem of scattering.
Also, to be not used or used with low-ratio the comparative example 1 of cement bonding agent and the solidfied material of comparative example 2 with
And the solidfied material of solidfied material and the embodiment 1 and embodiment 2 that the comparative example 3 of cement bonding agent is excessively used is compared respectively
As a result, the moisture content reduction inefficient of the solidfied material of 1~comparative example of comparative example 3 is confirmed.Also, with proposed by the invention
Ratio is compared to use cement bonding agent using the cement bonding agent of density and porosity disengaging scope proposed by the invention
The solidfied material of example 5 can not be such that moisture content is effectively reduced because the porosity of cement bonding agent is excessively low.
The above results are represented, can be produced at once when the sludge solidifying agent of one embodiment of the invention is mixed with sewage sludge
Exothermic reaction, and hydration reaction is carried out simultaneously, represent that above-mentioned sludge solidifying agent is effectively reduced moisture content.
Experimental example 2：To the measure of compressive strength
The time-based compressive strength of solidfied material to 1~embodiment of above-described embodiment 3 and 1~comparative example of comparative example 5 becomes
Change is analyzed.Compressive strength is determined according to the methods of KS F 2343, and shows in figure 2 below its result.
Table 2
As shown in Table 2 above, the compression for confirming the embodiment 1 of one embodiment of the invention and the solidfied material of embodiment 3 is strong
Degree rises over time.This is represented when the sludge solidifying agent of the present invention is mixed with sewage sludge, by inhaling
Receive and dispatch thermal response to reduce moisture and make particle unity, so that intensity rises.
On the contrary, in the case of the solidfied material of comparative example 1, comparative example 2 and comparative example 4, due to the decrement of initial moisture
Few, aggegation effect is remarkably decreased, and is still had such as the state of clay, thus intensity difference.
Also, in the case of the solidfied material of comparative example 3 and comparative example 5, relative to the solidification of embodiment 2 and embodiment 3
Thing, shows the compressive strength somewhat risen, but shows in terms of moisture content reducing effect the degree being remarkably decreased (with reference to table
1).This is represented, is glued because cement has been excessively used relative to ratio ranges proposed by the invention in the solidfied material of above-mentioned comparative example 3
Agent is tied, thus while compressive strength is improved by the outstanding cement bonding agent of density, but because of the hole in sludge solidifying agent
Rate declines and declines water absorption rate.Also, arrived by the results verification of above-mentioned comparative example 4 and the solidfied material of comparative example 5, according to water
The density of mud binding agent and the degree of void content, the water absorption rate of the sludge solidifying agent comprising above-mentioned cement bonding agent and the reality of intensity
Significant changes can occur for existing effect.
The above results represent can both there is outstanding compressive strength for obtaining to the regulation of cement bonding agent ratio, again
It is extremely important in terms of sludge solidifying agent with high-moisture percentage.
Experimental example 3：Control to stench (ammonia)
In order to which the reduction stench effect of sludge solidifying agent to the present invention is analyzed, to above-described embodiment 1, embodiment 4,
The yield of the ammonia produced when preparing solidfied material of comparative example 6 is compared and determined.
After gas produced by during in the absorption bottle of 0.5% boric acid solution equipped with 250ml prepared by trapping, by profit
It is measured with the neutralization titration of sulfuric acid solution and the yield of ammonia is calculated by following mathematical expression 1.
Mathematical expression 1
In above-mentioned mathematical expression 1, C is the concentration (ppm) of ammonia, and a is the consumption (ml) of N/10 sulfuric acid, and b is based on blank
The consumption (ml) of the N/10 sulfuric acid of experiment, f is the titre of N/10 sulfuric acid, and Vs is the gas flow (L) for drying sample, and V is represented point
The extracted amount (ml) of analysis sample solution.Result is shown in table 3 below.
Table 3
As shown in Table 3 above, relative to the situation for the solidfied material for preparing the comparative example 6 that biomass combustion material is not used,
When the sludge solidifying agent for being prepared by one embodiment of the invention embodiment 1 and embodiment 4 solidfied material when, the yield of ammonia shows
Write and reduce.
The above results represent that sludge solidifying agent of the invention includes biomass combustion material, so that when being solidified, can
Effectively suppressed as because turning into the generation for the ammonia for producing stench reason with strong basicity by adjusting pH rising degree.
Claims (17)
1. a kind of sludge solidifying agent, it is characterised in that
Relative to comprising selected from by light dolomite, quick lime and petroleum coke burn in the group that constitutes of material combustion thing it is a kind of with
On 100 parts by weight alkaline agent, comprising 100 parts by weight~500 oxidant of parts by weight, 100 parts by weight~500 parts by weight water
Papermaking incendiary material, 400 weights of the parts by weight of the cement bonding agents of the parts by weight of mud, 400 parts by weight~500,100 parts by weight~300
The lignocellulosic biomass incendiary material of the parts by weight of part~500 and the bituminous coal combustion material of the parts by weight of 100 parts by weight~500 are measured,
Comprising 30 percentage by weights~85 percentage by weight calcium oxide,
Above-mentioned cement bonding agent derives from discarded concrete.
2. sludge solidifying agent according to claim 1, it is characterised in that the above-mentioned cement from discarded concrete is bonded
Agent is prepared by the method comprised the following steps：
Step a, discarded concrete attritive powder is prepared by crushing discarded concrete；
Step b, is washed to above-mentioned discarded concrete attritive powder；
Step c, is heat-treated to the above-mentioned discarded concrete attritive powder by washing；And
Step d, cement bonding agent is separated after by above-mentioned heat treatment from discarded concrete attritive powder,
Before the washing in carrying out above-mentioned steps b, including by adding agglutinant in discarded concrete attritive powder and disappearing
The step of infusion is to be mixed.
3. sludge solidifying agent according to claim 1, it is characterised in that above-mentioned lignocellulosic biomass incendiary material includes choosing
Free palm shell incendiary material, cocoanut shell incendiary material, sawdust incendiary material, wood substance grain incendiary material, straw incendiary material,
One or more of group of corn stalk incendiary material, oak branch incendiary material and chaff incendiary material composition,
The specific surface area of above-mentioned lignocellulosic biomass incendiary material is 4000cm2/ g~6000cm2/ g, pH are 10~11.
4. sludge solidifying agent according to claim 1, it is characterised in that
Above-mentioned lignocellulosic biomass incendiary material is to include palm shell incendiary material, cocoanut shell incendiary material and sawdust incendiary material
Mixed combustion material,
Above-mentioned mixed combustion material is with 1:3~5:4~7 weight ratio includes palm shell incendiary material, cocoanut shell incendiary material
And sawdust incendiary material.
5. sludge solidifying agent according to claim 1, it is characterised in that above-mentioned lignocellulosic biomass incendiary material and bituminous coal
Incendiary material is with 5~8:2~5 weight ratio is contained in above-mentioned sludge solidifying agent.
6. sludge solidifying agent according to claim 1, it is characterised in that
Above-mentioned sludge solidifying agent is also included to be added selected from one or more of group being made up of flyash, silica sand powder and lime powder
Plus agent,
Relative to the alkaline agent of 100 parts by weight, above-mentioned sludge solidifying agent comprising 100 parts by weight~500 parts by weight above-mentioned additive.
7. sludge solidifying agent according to claim 1, it is characterised in that
Above-mentioned sludge solidifying agent also includes flyash, silica sand powder and lime powder,
Above-mentioned flyash, silica sand powder and lime powder are with 1:1~2:1~2 weight ratio is contained in above-mentioned sludge solidifying agent.
8. sludge solidifying agent according to claim 1, it is characterised in that above-mentioned sludge solidifying agent also comprising agglutinant and disappears
One or more of infusion.
9. sludge solidifying agent according to claim 1, it is characterised in that the density of above-mentioned cement bonding agent is 2.0g/cm3
~2.5g/cm3, porosity is 30%~50%.
10. sludge solidifying agent according to claim 1, it is characterised in that the specific surface area of above-mentioned sludge solidifying agent is
1000cm2/ g~5000cm2/g。
11. a kind of preparation method of solidfied material, it is characterised in that
Including：
Step 1, the sludge solidifying agent of the parts by weight of 20 parts by weight~70 is mixed in the sludge of 100 parts by weight to prepare mixture；
And
Step 2, said mixture is implemented to conserve,
Relative to the alkaline agent of 100 parts by weight, the parts by weight of oxidant, 100 parts by weight to the parts by weight of 100 parts by weight~500~500
Cement, the cement bonding agent of the parts by weight of 400 parts by weight~500, the papermaking incendiary material of the parts by weight of 100 parts by weight~300,
The bituminous coal combustion material of the parts by weight of the lignocellulosic biomass incendiary material of the parts by weight of 400 parts by weight~500 and 100 parts by weight~500
Material is mixed to prepare above-mentioned sludge solidifying agent.
12. the preparation method of solidfied material according to claim 11, it is characterised in that above-mentioned cement bonding agent by including
It is prepared by the methods of following steps：
Step a, discarded concrete attritive powder is prepared by crushing discarded concrete；
Step b, is washed to above-mentioned discarded concrete attritive powder；
Step c, is heat-treated to the above-mentioned discarded concrete attritive powder by washing；And
Step d, cement bonding agent is separated after by above-mentioned heat treatment from discarded concrete attritive powder,
Carry out above-mentioned steps b in washing before, in addition to by discarded concrete attritive powder add agglutinant and
The step of defoamer is to be mixed.
13. the preparation method of solidfied material according to claim 12, it is characterised in that in above-mentioned steps a, so that discarded
The fines content of concrete reaches 3000cm2/ g~5000cm2/ g mode is crushed.
14. the preparation method of solidfied material according to claim 12, it is characterised in that
The washing in above-mentioned steps b is carried out using watering sieve,
With 2kg/cm2~4kg/cm2Pressure condition enter horizontal high voltage watering.
15. the preparation method of solidfied material according to claim 12, it is characterised in that in above-mentioned steps c, utilize rotation
Formula drying machine is heat-treated under 400 DEG C~800 DEG C of temperature conditionss.
16. a kind of solidfied material, mixed in the sludge of 100 parts by weight the parts by weight of 20 parts by weight~70 selected from claim 1 to
The sludge solidifying agent described in one in 10 is formed to be mixed and conserved, and above-mentioned solidfied material is characterised by,
The compressive strength of above-mentioned solidfied material after the process determined according to KS F 2343 maintenance in 24 hours is 0.9kgf/cm2
~1.2kgf/cm2, the compressive strength of the above-mentioned solidfied material after being conserved by 72 hours is 1.2kgf/cm2~1.5kgf/cm2,
The moisture content of above-mentioned solidfied material after the process determined according to KS F 2306 maintenance in 3 hours is 45% to 55%, warp
The moisture content for the above-mentioned solidfied material crossed after conserving for 72 hours is 35%~42.8%.
17. a kind of cover soil material, it is characterised in that utilize the solidfied material described in claim 16.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2016-0020843 | 2016-02-22 | ||
| KR1020160020843A KR101735096B1 (en) | 2016-02-22 | 2016-02-22 | Sludge solidified agent and preparation method of solidified material using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107098550A true CN107098550A (en) | 2017-08-29 |
| CN107098550B CN107098550B (en) | 2020-08-18 |
Family
ID=58739960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710097462.3A Active CN107098550B (en) | 2016-02-22 | 2017-02-22 | Sludge curing agent and preparation method of cured product using same |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101735096B1 (en) |
| CN (1) | CN107098550B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108609817A (en) * | 2018-04-19 | 2018-10-02 | 广州市永蓝环保科技有限公司 | A kind of curing of river sludge |
| CN110152591A (en) * | 2019-06-06 | 2019-08-23 | 华侨大学 | A kind of preparation method of city river polluted bed mud activity cover plate |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101836823B1 (en) * | 2017-07-05 | 2018-04-20 | 그린에너지개발주식회사 | Method for solidifying sewage sludge using fallen leaves |
| KR102652824B1 (en) * | 2022-02-28 | 2024-04-02 | 윤준태 | Pellet Ash Manufacturing Apparatus For Concrete Admixture Using Biomass And Combustible Domestic Waste, Manufacturing Method Thereof, And Use Of Pellet Ash |
| KR102652825B1 (en) * | 2022-02-28 | 2024-04-02 | 윤준태 | Fillet Ash Manufacturing Apparatus For Concrete Admixture Using Agricultural By-Products, Manufacturing Method And Use Thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007699A (en) * | 2007-01-26 | 2007-08-01 | 广州铬德工程有限公司 | Sludge dewatering process |
| CN101050045A (en) * | 2007-05-10 | 2007-10-10 | 上海交通大学 | Treatment method for solidifying bed mud in river |
| CN101062824A (en) * | 2007-04-17 | 2007-10-31 | 同济大学 | Sludge gelling curing agent and application thereof |
| US20080072806A1 (en) * | 2006-09-21 | 2008-03-27 | John Kimberlin | Apparatus, system, and method for operating and controlling combustor for ground or particulate biomass |
| DE102012102473A1 (en) * | 2012-03-22 | 2013-09-26 | Xtract Gmbh | Treating sewage sludge, useful for improving its storage- and/or transport properties, comprises mechanically dewatering sludge, and mixing dewatered sludge with superabsorbent or hydrogel to obtain granules with specific moisture content |
| CN103910503A (en) * | 2014-02-18 | 2014-07-09 | 祝建中 | Curing sintering-free granulation method for sludge |
| JP5776749B2 (en) * | 2008-02-15 | 2015-09-09 | 宇部興産株式会社 | Cement-based solidified concrete sludge heat-dried powder and method for producing the same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100834407B1 (en) * | 2007-06-11 | 2008-06-09 | (주) 대동종합건설 | Soil stabilizer composite recycling waste concrete sludge and method for manufacturing thereof |
| KR101190195B1 (en) | 2010-11-03 | 2012-10-12 | 주식회사 씨엠디기술단 | Solidifier of sludge with high water containing rate and method of the same using |
-
2016
- 2016-02-22 KR KR1020160020843A patent/KR101735096B1/en active IP Right Grant
-
2017
- 2017-02-22 CN CN201710097462.3A patent/CN107098550B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080072806A1 (en) * | 2006-09-21 | 2008-03-27 | John Kimberlin | Apparatus, system, and method for operating and controlling combustor for ground or particulate biomass |
| CN101007699A (en) * | 2007-01-26 | 2007-08-01 | 广州铬德工程有限公司 | Sludge dewatering process |
| CN101062824A (en) * | 2007-04-17 | 2007-10-31 | 同济大学 | Sludge gelling curing agent and application thereof |
| CN101050045A (en) * | 2007-05-10 | 2007-10-10 | 上海交通大学 | Treatment method for solidifying bed mud in river |
| JP5776749B2 (en) * | 2008-02-15 | 2015-09-09 | 宇部興産株式会社 | Cement-based solidified concrete sludge heat-dried powder and method for producing the same |
| DE102012102473A1 (en) * | 2012-03-22 | 2013-09-26 | Xtract Gmbh | Treating sewage sludge, useful for improving its storage- and/or transport properties, comprises mechanically dewatering sludge, and mixing dewatered sludge with superabsorbent or hydrogel to obtain granules with specific moisture content |
| CN103910503A (en) * | 2014-02-18 | 2014-07-09 | 祝建中 | Curing sintering-free granulation method for sludge |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108609817A (en) * | 2018-04-19 | 2018-10-02 | 广州市永蓝环保科技有限公司 | A kind of curing of river sludge |
| CN110152591A (en) * | 2019-06-06 | 2019-08-23 | 华侨大学 | A kind of preparation method of city river polluted bed mud activity cover plate |
| CN110152591B (en) * | 2019-06-06 | 2022-09-30 | 华侨大学 | Preparation method of urban river polluted sediment active covering plate |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101735096B1 (en) | 2017-05-12 |
| CN107098550B (en) | 2020-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107098550A (en) | Sludge solidifying agent and utilize its solidfied material preparation method | |
| JP4438329B2 (en) | Method for treating waste containing organic matter | |
| KR20090109529A (en) | Method of removing unburned carbon from coal ash | |
| TW200827052A (en) | Method of removing unburned carbon from coal ash | |
| JP4191199B2 (en) | Waste incineration ash treatment method, sand substitute and crushed stone substitute obtained by the treatment method | |
| CN107098549A (en) | Sludge solidifying agent and utilize its solidfied material preparation method | |
| CN101155642A (en) | Methods for reduction pollutants from carbonaceous materials prior to combustion | |
| JP5183530B2 (en) | Method for producing anhydrous gypsum powder | |
| JP2008126185A (en) | Calcined object and its manufacturing method | |
| JP2024138031A (en) | Soil solidification material, manufacturing method for soil solidification material, and soil solidification method | |
| KR101934411B1 (en) | High-temperature waste treatment method using sludge | |
| CN107098633B (en) | The method for preparing cement bonding agent using discarded concrete | |
| CN110937835A (en) | Method for resource utilization of waste incineration slag | |
| JP2013247860A (en) | Recycled soil | |
| JP3490221B2 (en) | Method for producing molten solid from fly ash generated during sludge incineration | |
| JP2004067399A (en) | Method of producing regenerated sand from construction sludge | |
| KR102120557B1 (en) | Method for stabilizing contaminated soil using power generation by-products | |
| JP3242674B2 (en) | Mud and mud waste treatment equipment | |
| CN110914203A (en) | Method for producing binders for conditioning sludges, aqueous soils and for neutralizing acids | |
| WO2023027093A1 (en) | Method for processing clayey sludge | |
| US20060229486A1 (en) | Disposal area for storing substances composite substances or mixtures thereof, method for treating the same, and corresponding device | |
| JP6672052B2 (en) | Manufacturing method of molten product | |
| JP2004358288A (en) | Method for washing/desalting incineration ash | |
| KR101170908B1 (en) | Method and powder solidifying agent for sewage sludge | |
| JP4346043B1 (en) | Method for producing recycled concrete material and recycled concrete material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |