CN109607989A - A kind of collaboration solidifies the method and system of dewatered sludge Yu primary sludge - Google Patents
A kind of collaboration solidifies the method and system of dewatered sludge Yu primary sludge Download PDFInfo
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- CN109607989A CN109607989A CN201811533744.4A CN201811533744A CN109607989A CN 109607989 A CN109607989 A CN 109607989A CN 201811533744 A CN201811533744 A CN 201811533744A CN 109607989 A CN109607989 A CN 109607989A
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- 239000010802 sludge Substances 0.000 title claims abstract description 354
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000007711 solidification Methods 0.000 claims abstract description 77
- 230000008023 solidification Effects 0.000 claims abstract description 77
- 239000004576 sand Substances 0.000 claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 48
- 238000003756 stirring Methods 0.000 claims description 65
- 230000018044 dehydration Effects 0.000 claims description 29
- 238000006297 dehydration reaction Methods 0.000 claims description 29
- 239000007921 spray Substances 0.000 claims description 27
- 239000003795 chemical substances by application Substances 0.000 claims description 25
- 238000004332 deodorization Methods 0.000 claims description 25
- 239000004568 cement Substances 0.000 claims description 21
- 238000003860 storage Methods 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 14
- 239000003814 drug Substances 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000010801 sewage sludge Substances 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 17
- 230000008569 process Effects 0.000 abstract description 10
- 238000007599 discharging Methods 0.000 description 20
- 230000029087 digestion Effects 0.000 description 6
- 230000008595 infiltration Effects 0.000 description 5
- 238000001764 infiltration Methods 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000002028 Biomass Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical group [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000002361 compost Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000005213 imbibition Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 229910017435 S2 In Inorganic materials 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of methods that collaboration solidifies dewatered sludge Yu primary sludge, include the following steps: S1, are stirred, and carry out primary solidification primary sludge and middle sand, solidification auxiliary material progress level-one, obtain primary solidification sludge；S2, primary solidification sludge is stirred with through broken dewatered sludge progress second level, and carries out collaboration solidification, obtain solidification sludge.The invention also discloses the systems that a kind of collaboration solidifies dewatered sludge Yu primary sludge.Method high treating effect of the invention, is easily promoted, is at low cost simple process, can be used for scale processing, and system structure is simple, at low cost, easy to operate, high treating effect.
Description
Technical field
The present invention relates to the sides that technical field of sludge treatment more particularly to a kind of collaboration solidify dewatered sludge Yu primary sludge
Method and system.
Background technique
Municipal sludge is a kind of biomass relic that municipal sewage plant generates in sewage disposal process, moisture content
High, complicated components.If a large amount of municipal sludges do not deal carefully with disposition, environment will be caused seriously to pollute.
It is required according to specific resistance to filtration " four change ", current municipal sludge processing technique mainly includes sanitary landfills, anaerobism
Digestion, aerobic compost, anhydration and incineration etc., (minimizing degree is 60% in sludge reduction for " anaerobic digestion+deep dehydration " technology
More than), recycling (recycling sludge in biomass energy), innoxious (killing harmful pathogen) and stabilize (generate stablize it is rotten
Grow matter) etc. have greater advantage, be one of the sludge treatment technique of current international mainstream, in recent years at home also quickly it is emerging
It rises and applies.Sludge anhydration burning technology there are costs of investment it is big, operating cost is high the problems such as；Product after aerobic compost exists
The problems such as market space is limited, environmental safety, presently, there are many limitations.Therefore, current municipal sludge disposition is final
Whereabouts is still to enter landfill yard after processing to dispose.
If municipal sludge directly adds curing agent and auxiliary material solidification, index of correlation to may conform to the sludge shale mark into landfill yard
Standard, but this technique cannot achieve " minimizing, innoxious, stabilisation, recycling " requirement of specific resistance to filtration.
The dehydration equipment type that country's anaerobic digestion project digested sludge uses at present is mainly plate and frame filter press, and sludge is adopted
Can be degraded organic matter in sludge, recycling biomass energy with Anaerobic Digestion, after through frame dehydration can greatly reduce dirt
Mud volume effectively realizes " minimizing, innoxious, the stabilisation, recycling " of specific resistance to filtration.It needs to be added in dehydration
The quenched medicaments such as a certain amount of PAM, coagulant (organic or inorganic), while certain content of organic matter is still remained in dewatered sludge
(20% or more) causes dewatered sludge to have elasticity, water imbibition, and dewatered sludge organic matter is higher, PAM dosage is more, which gets over
Obviously.After sludge frame dehydration moisture content can be down to 60% hereinafter, but simple physical extrusion dehydration can only reduce sludge volume, nothing
Method thoroughly changes sludge quality, when dewatered sludge meet water it is hygroscopic, cause its mechanical index be deteriorated, easily slide, bad stability.
Dewatered sludge routine disposal options are to mix to fill out with house refuse into landfill yard, and the dewatered sludge into landfill yard easily absorbs rubbish
And surrounding enviroment moisture, cause moisture percentage in sewage sludge increase, mechanical index variation, mobility to become strong, influences landfill yard heap body and stablize
Property；Percolate is easily dispersed into after dewatered sludge water suction and leads infiltration system, and Heavy Metals in Sludge and mud granule easily dissolve out after causing
It holds percolate processing difficulty to increase, influences intake dust removal rate and discharge index stability, while dewatered sludge is dispersed into rubbish
Rubbish heap body easily blocks firedamp drainage gap, causes collecting methane unsmooth and there are security risks.
Volume is still larger (diameter is greater than 10cm) after frame dehydration sludge crushing, if with only surface layer carries out after curing agent mix
Hydration and sclerosis reaction, binding force is not strong, causes integrally curing effect poor, and water imbibition and mechanical index do not have clear improvement.And plate
In the case of frame dewatered sludge uses a large amount of curing agent, increases cost of disposal, increases sludge weight and volume, economy and the feature of environmental protection
Difference.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, a kind of high treating effect, technique letter are provided
It is single, easily promote, collaboration at low cost solidifies the method for dewatered sludge Yu primary sludge, also provide a kind of structure it is simple, it is at low cost,
The system that collaboration easy to operate, high treating effect solidifies dewatered sludge Yu primary sludge.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A method of collaboration solidification dewatered sludge and primary sludge include the following steps:
S1, primary sludge and middle sand, solidification auxiliary material progress level-one are stirred, and carry out primary solidification, obtain primary solidification
Sludge；
S2, primary solidification sludge is stirred with through broken dewatered sludge progress second level, and carries out collaboration solidification, consolidate
Change sludge.
The method that above-mentioned collaboration solidifies dewatered sludge Yu primary sludge, it is preferable that count in mass ratio, dewatered sludge: former
Primary sludge is 1: 0.5~1.5.
The method that above-mentioned collaboration solidifies dewatered sludge Yu primary sludge, it is preferable that in the step S1, the solidification is auxiliary
Material is cement and curing agent；It counts in mass ratio, primary sludge: middle sand: cement: curing agent 1: 0.1~0.3: 0.1~0.3:
0.02~0.1.
The method that above-mentioned collaboration solidifies dewatered sludge Yu primary sludge, it is preferable that described through broken in the step S2
Dewatered sludge partial size < 10cm, the dewatered sludge be the anaerobically digested sludge through frame dehydration.
The method that above-mentioned collaboration solidifies dewatered sludge Yu primary sludge, it is preferable that in the step S1, the level-one is stirred
The time for mixing mixing is 2~3min；In the step S2, the time that the second level is stirred is 2~5min.
The inventive concept total as one, the present invention also provides what a kind of collaboration solidified dewatered sludge and primary sludge to be
System, including second level mixed stirring device, for storing, broken dewatered sludge and convey broken dewatered sludge to second level mixing and stir
Mix dewatered sludge storage-broken-conveying mechanism of device and for blending the primary sludge of mix, middle sand and solidifying auxiliary material
The feed inlet of level-one mixed stirring device, the discharge port of the level-one mixed stirring device and the second level mixed stirring device connects
It connects.
The system that above-mentioned collaboration solidifies dewatered sludge Yu primary sludge, it is preferable that dewatered sludge storage-broken-
Conveying mechanism includes dewatered sludge warehouse, sludge crusher, the first screw conveyor and the first belt conveyor, and the dehydration is dirty
Mud warehouse is connected to the first screw conveyor, and the discharge port of first screw conveyor is located at the charging of the sludge crusher
Above mouthful, first belt conveyor is set to below the discharge port of the sludge crusher, first belt conveyor
One end far from the sludge crusher extends in the second level mixed stirring device.
The system that above-mentioned collaboration solidifies dewatered sludge Yu primary sludge, it is preferable that further include primary warehouse of sludge, middle sand
Hopper, solidification auxiliary material storage tank, the second screw conveyor, the second belt conveyor and third screw conveyor, second belt
Conveyer is set to the lower section of the middle sand hopper discharge port, and second belt conveyor is extended to far from one end of middle sand hopper
In the level-one mixed stirring device, the discharge port of the feed inlet of second screw conveyor and the primary warehouse of sludge connects
Logical, the feed inlet of the third screw conveyor is connected to the discharge port for solidifying auxiliary material storage tank, second helical feed
The discharge port of machine and third screw conveyor all extends in the level-one mixed stirring device.
The system that above-mentioned collaboration solidifies dewatered sludge Yu primary sludge, it is preferable that further include for dirty to the dehydration
The spray deodorization device of mud warehouse spray deodorization medicament；
The charging door of the dewatered sludge warehouse is equipped with automatic inductor, and the automatic inductor and spray deodorization device are automatic
It is chain.
The system that above-mentioned collaboration solidifies dewatered sludge Yu primary sludge, it is preferable that the dewatered sludge warehouse outer wall
The vibrator for being used to eliminate arch formation is respectively arranged in middle part and lower part, and two vibrators are arranged in opposite directions；
First belt conveyor and the second belt conveyor are respectively provided with fender in the two sides along conveying direction, in two belts
The conveying end of conveyer is equipped with cleaning shoe.
Compared with the prior art, the advantages of the present invention are as follows:
(1) present invention is by carrying out primary solidification to primary sludge, obtaining having easy mix, viscous viscosity and can further solidifying
Primary solidification sludge, and by frame dehydration sludge crushing, the dewatered sludge fritter for the aggregate properties being had mixes the two
Solidified after conjunction, since dewatered sludge fritter plays skeleton function in the curing process and the primary sludge being cured wraps up,
The dosage for reducing sand in aggregate simultaneously is finally reached the cured effect of collaboration.Primary solidification sludge centainly mix than in the case where,
Obtained solidification sludge is able to satisfy into landfill yard shale moisture content and mechanical index requirement.Method high treating effect of the invention,
Simple process is easily promoted, is at low cost, can be used for scale processing.
(2) present invention utilizes the aggregate properties of dewatered sludge, cooperates with the dosage that sand in aggregate can be reduced in solidification process, drop
Low production cost, while dewatered sludge is added during primary sludge curing secondary mix, avoid consumption curing agent；Utilize original
Primary sludge carry out the easy mix in solidification process, viscous viscosity and can further cured property, adequately achieve to dehydration
The utilization of sludge, overcome existing for anaerobic digestion dewatered sludge in the prior art it is hygroscopic cause mechanical index be deteriorated, flowing
Property the defects of becoming strong, influencing landfill yard heap body stability, leachate collection and collecting methane, also overcome de- using directly solidification
The disadvantages of solidification effect existing for sewage sludge is poor, at high cost, the feature of environmental protection is poor.
(3) system of the invention use by level-one mixed stirring device to primary sludge carry out primary solidification subsequently into
Second level agitating device, and be delivered to broken dewatered sludge fritter by using dewatered sludge storage, broken and conveying device
It is mixed in second level mixed stirring device with the mixture after primary solidification, realizes that the two cooperates with cured effect.This
The system structure of invention is simple, at low cost, easy to operate, high treating effect.
(4) system of the invention passes through each material warehouse, sludge crusher and multiple screw conveyors and Belt Conveying
The cooperation of machine, whole system high degree of automation can realize material conveying, broken, mixing and solidification automatically, can effectively drop
Low labor intensity improves treatment effeciency.
(5) system of the invention sprays the spray deodorization device of deodorization medicament by setting to dewatered sludge warehouse, effectively
It reduces foul smell and dissipates and overflow, improve operating condition, by automatic in the charging door setting of dewatered sludge warehouse and spray deodorization device
Chain automatic inductor can realize automatic spray according to the folding of door, further improve operating condition.
(6) system of the invention can effectively eliminate arch formation, protect by the way that vibrator is arranged in dewatered sludge warehouse outer wall
Barrier operation is continuously gone on smoothly, in addition, also passing through the tilt angle inside control feed bin, the mobile cross of setting in feed bin
Blade further ensures that discharging is smooth, ensures continuously going on smoothly for operation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the system that collaboration of the invention solidifies dewatered sludge and primary sludge.
Each label indicates in figure:
1, dewatered sludge warehouse；2, the first screw conveyor；3, sludge crusher；4, the first belt conveyor；5, deodorization is sprayed
Device；6, primary warehouse of sludge；7, the second screw conveyor；8, middle sand hopper；9, the second belt conveyor；10, solidify auxiliary material
Storage tank；11, third screw conveyor；12, level-one mixed stirring device；13, second level mixed stirring device.
Specific embodiment
Below in conjunction with Figure of description and specific preferred embodiment, the invention will be further described, but not therefore and
It limits the scope of the invention.
A method of collaboration solidification dewatered sludge and primary sludge include the following steps:
S1, primary sludge and middle sand, solidification auxiliary material progress level-one are stirred, obtain primary solidification sludge；
S2, primary solidification sludge is stirred with through broken dewatered sludge second level, carries out collaboration solidification, it is dirty obtains solidification
Mud.
In above-mentioned method, count in mass ratio, dewatered sludge: primary sludge quality ratio is 1: 0.5~1.5.
In above-mentioned method, in the step S1, the solidification auxiliary material is cement and curing agent；It counts in mass ratio, it is primary
Sludge: middle sand: cement: curing agent 1: 0.1~0.3: 0.1~0.3: 0.02~0.1.
In above-mentioned method, the cement is extraordinary quick hardening cement, and the curing agent is quick lime, in miberal powder, early strength agent
One or more combination.
In above-mentioned method, in the step S2, the partial size < 10cm through broken dewatered sludge, optimized particle size is
≤5cm；The dewatered sludge is the anaerobically digested sludge through frame dehydration.
In above-mentioned method, in the step S1, the time that the level-one is stirred is 2~3min；The step S2
In, the time that the second level is stirred is 2~5min.
A kind of collaboration solidifies the system of dewatered sludge Yu primary sludge, including second level mixed stirring device 13, for storing,
Broken dewatered sludge and convey dewatered sludge to second level mixed stirring device 13 dewatered sludge storage-broken-conveying mechanism, with
And for blending the primary sludge of mix, middle sand and the level-one mixed stirring device 12 for solidifying auxiliary material, dress is mixed in the level-one
12 discharge port is set to connect with the feed inlet of the second level mixed stirring device 13.
The level-one mixed stirring device 12 is level-one blender, and the second level mixed stirring device 13 is second level stirring
Machine.
Above-mentioned system, the dewatered sludge storage-broken-conveying mechanism includes dewatered sludge warehouse 1, sludge crusher
3, for dewatered sludge to be delivered to the first screw conveyor 2 of sludge crusher 3 and be used for will be after sludge crusher 3 be broken
Dewatered sludge be delivered to the first belt conveyor 4 of second level mixed stirring device 13, the dewatered sludge warehouse 1 passes through discharging
Mouth is connected to the feed inlet of the first screw conveyor 2, and the discharge port of first screw conveyor 2 is located at the sludge crusher
Above 3 feed inlet, first belt conveyor 4 is set to below the discharge port of the sludge crusher 3, first skin
It is extended in the second level mixed stirring device 13 with conveyer 4 far from one end of the sludge crusher 3.Frame dehydration sludge
It unloads into dewatered sludge warehouse 1, is pressed by the first screw conveyor (discharging spiral pipe) 2 of the orlop lower part of dewatered sludge warehouse 1
Frame dehydration sludge is delivered to sludge crusher 3 and is crushed by special speed, and dewatered sludge is broken into the fritter of certain partial size
It drops down onto the first belt conveyor 4 and is delivered in second level mixed stirring device 13 by the first belt conveyor 4.
Above-mentioned system further includes primary warehouse of sludge 6, middle sand hopper 8, solidifies auxiliary material storage tank 10, is primary for conveying
Second screw conveyor 7 of sludge, for the second belt conveyor 9 of sand in conveying and for conveying the third spiral shell for solidifying auxiliary material
Conveyer 11 is revolved, second belt conveyor 9 is set to the lower section of middle 8 discharge port of sand hopper, second Belt Conveying
Machine 9 extends in the level-one mixed stirring device 12 far from one end of middle sand hopper 8, and second screw conveyor 7 passes through
Feed inlet is connected to the discharge port of the primary warehouse of sludge 6, the feed inlet of the third screw conveyor 11 and the solidification
The discharge port of auxiliary material storage tank 10 is connected to, the discharge port of second screw conveyor 7 and third screw conveyor 11 with it is described
The feed inlet of level-one mixed stirring device 12 connects.Primary sludge in primary warehouse of sludge 6 passes through the second spiral transferring of lower part
Send machine (primary sludge discharging spiral) 7 to be delivered to level-one mixed stirring device 12, the middle sand in middle sand hopper 8 pass through lower part the
Two belt conveyors 9 are delivered to level-one mixed stirring device 12, and the material solidified in auxiliary material storage tank 10 passes through third helical feed
Machine (solidification auxiliary material discharging spiral) 11 enters level-one mixed stirring device 12.Primary dirt is realized in level-one mixed stirring device 12
After mud and middle sand and solidification auxiliary material primary solidification, into second level mixed stirring device 13, while dewatered sludge fritter passes through first
Belt conveyor 4 enters second level mixed stirring device 13, using the easy mix having after primary sludge primary solidification, glues
Property and frame dehydration sludge crushing are at the aggregate properties having after certain partial size, and dewatered sludge is small during secondary curing
Block plays skeleton function and the primary sludge package that is cured, while reducing the dosage of sand in aggregate, and it is cured to be finally reached collaboration
Effect.
Above-mentioned system further includes the spray deodorization device 5 for spraying deodorization medicament to the dewatered sludge warehouse 1,
It sprays deodorization device 5 and is set to 1 top of dewatered sludge warehouse, foul smell is avoided to leak.The spray deodorization device 5 is stored up including medicament
Case, spray pump and spray nozzle.
Above-mentioned system, the solidification auxiliary material storage tank 10 at least there are two, a storage cement, another storage solidification
Agent.
Above-mentioned system, the door of the dewatered sludge warehouse 1 are equipped with automatic inductor, the automatic inductor and spray
5 automatic linkage of deodorization device triggers automatic inductor under door open state, triggers automatic inductor to spray deodorization device
5 conveying signals, start deodorization spray pump, and closed type triggering stops.
Above-mentioned system, 1 outer wall of the dewatered sludge warehouse middle part and lower part respectively arrange that one is used to eliminate arch formation
Vibrator, and two vibrators are arranged in opposite directions.It whether smooth can be discharged according to the discharging spiral pipe of the first screw conveyor 2,
Start vibrator and eliminates arch formation.
Above-mentioned system, first belt conveyor 4 and the second belt conveyor 9 are all provided in the two sides along conveying direction
Fender is set to prevent sludge from falling, is equipped with cleaning shoe in the conveying end of each belt conveyor.
Feed inlet to the orlop tilt angle of above-mentioned system, the dewatered sludge warehouse 1 is 50 °~70 °, in favor of going out
Expect smooth.
Above-mentioned system is equipped with maintenance valve together in the middle part of the dewatered sludge warehouse 1, convenient for periodic inspection dimension in storehouse
Shield.
Above-mentioned system, the 1 storehouse inner wall of dewatered sludge warehouse are equipped with the anti-sticking polyethylene board of macromolecule.
Above-mentioned system, the interior mobile cross blade equipped with hydraulic-driven of the dewatered sludge warehouse 1 is, it can be achieved that sludge
Broken arch and precrushing.
Above-mentioned system, the 2, second screw conveyor of first screw conveyor (dewatered sludge discharging spiral) are (primary
Sludge discharges spiral) 7 and third screw conveyor (solidification auxiliary material discharge spiral) 11 be all made of shaftless screw, frequency control is adjusted
Save unit time load.
Above-mentioned system, second belt conveyor (middle sand belt conveyer) 9 use frequency control, when adjusting unit
Between load.
Above-mentioned system, the sludge crusher 3 are oppositely rolling roller crusher；The oppositely rolling roller crusher motor is equipped with protection
Switch autostop and is alarmed when current is excessive, and motor can invert when maintenance.
Embodiment 1
The system that a kind of collaboration of the invention solidifies dewatered sludge Yu primary sludge, as described in Figure 1, including dress is mixed in second level
Set 13, for storing, broken dewatered sludge and the dewatered sludge storage-that conveys dewatered sludge to second level mixed stirring device 13 it is broken
Broken-conveying mechanism and for blending the primary sludge of mix, middle sand and the level-one mixed stirring device 12 for solidifying auxiliary material, it is described
The discharge port of level-one mixed stirring device 12 is connect with the feed inlet of the second level mixed stirring device 13.
The level-one mixed stirring device 12 is level-one blender, and the second level mixed stirring device 13 is second level stirring
Machine.
Above-mentioned system, the dewatered sludge storage-broken-conveying mechanism includes dewatered sludge warehouse 1, sludge crusher
3, for dewatered sludge to be delivered to the first screw conveyor 2 of sludge crusher 3 and be used for will be after sludge crusher 3 be broken
Dewatered sludge be delivered to the first belt conveyor 4 of second level mixed stirring device 13, the dewatered sludge warehouse 1 passes through discharging
Mouth is connected to the feed inlet of the first screw conveyor 2, and the discharge port of first screw conveyor 2 is located at the sludge crusher
Above 3 feed inlet, first belt conveyor 4 is set to below the discharge port of the sludge crusher 3, first skin
It is extended in the second level mixed stirring device 13 with conveyer 4 far from one end of the sludge crusher 3.Frame dehydration sludge
It unloads into dewatered sludge warehouse 1, is pressed by the first screw conveyor (discharging spiral pipe) 2 of the orlop lower part of dewatered sludge warehouse 1
Frame dehydration sludge is delivered to sludge crusher 3 and is crushed by special speed, and dewatered sludge is broken into the fritter of certain partial size
It drops down onto the first belt conveyor 4 and is delivered in second level mixed stirring device 13 by the first belt conveyor 4.
Above-mentioned system further includes primary warehouse of sludge 6, middle sand hopper 8, solidifies auxiliary material storage tank 10, is primary for conveying
Second screw conveyor 7 of sludge, for the second belt conveyor 9 of sand in conveying and for conveying the third spiral shell for solidifying auxiliary material
Conveyer 11 is revolved, second belt conveyor 9 is set to the lower section of middle 8 discharge port of sand hopper, second Belt Conveying
Machine 9 extends in the level-one mixed stirring device 12 far from one end of middle sand hopper 8, and second screw conveyor 7 passes through
Feed inlet is connected to the discharge port of the primary warehouse of sludge 6, the feed inlet of the third screw conveyor 11 and the solidification
The discharge port of auxiliary material storage tank 10 is connected to, the discharge port of second screw conveyor 7 and third screw conveyor 11 with it is described
The feed inlet of level-one mixed stirring device 12 connects.Primary sludge in primary warehouse of sludge 6 passes through the second spiral transferring of lower part
Send machine (primary sludge discharging spiral) 7 to be delivered to level-one mixed stirring device 12, the middle sand in middle sand hopper 8 pass through lower part the
Two belt conveyors 9 are delivered to level-one mixed stirring device 12, and the material solidified in auxiliary material storage tank 10 passes through third helical feed
Machine (solidification auxiliary material discharging spiral) 11 enters level-one mixed stirring device 12.Primary dirt is realized in level-one mixed stirring device 12
After mud and middle sand and solidification auxiliary material primary solidification, into second level mixed stirring device 13, while dewatered sludge fritter passes through first
Belt conveyor 4 enters second level mixed stirring device 13, using the easy mix having after primary sludge primary solidification, glues
Property and frame dehydration sludge crushing are at the aggregate properties having after certain partial size, and dewatered sludge is small during secondary curing
Block plays skeleton function and the primary sludge package that is cured, while reducing the dosage of sand in aggregate, and it is cured to be finally reached collaboration
Effect.
Above-mentioned system further includes the spray deodorization device 5 for spraying deodorization medicament to the dewatered sludge warehouse 1,
Foul smell is avoided to leak.The spray deodorization device 5 includes medicament storage tank, spray pump and spray nozzle.
Above-mentioned system, the door of the dewatered sludge warehouse 1 are equipped with automatic inductor, the automatic inductor and spray
5 automatic linkage of deodorization device triggers automatic inductor under door open state, triggers automatic inductor to spray deodorization device
5 conveying signals, start deodorization spray pump, and closed type triggering stops.
Above-mentioned system, 1 outer wall of the dewatered sludge warehouse middle part and lower part respectively arrange that one is used to eliminate arch formation
Vibrator, and two vibrators are arranged in opposite directions.It whether smooth can be discharged according to the discharging spiral pipe of the first screw conveyor 2,
Start vibrator and eliminates arch formation.
Above-mentioned system, first belt conveyor 4 and the second belt conveyor 9 are all provided in the two sides along conveying direction
Fender is set to prevent sludge from falling, is equipped with cleaning shoe in the conveying end of each belt conveyor.
Feed inlet to the orlop tilt angle of above-mentioned system, the dewatered sludge warehouse 1 is 50 °~70 °, in favor of going out
Expect smooth.
Above-mentioned system, the middle part of the dewatered sludge warehouse 1 are equipped with maintenance valve together, convenient for periodic inspection dimension in storehouse
Shield.
Above-mentioned system, the storehouse inner wall of the dewatered sludge warehouse 1 are equipped with the anti-sticking polyethylene board of macromolecule.
Above-mentioned system, the interior mobile cross blade equipped with hydraulic-driven of the dewatered sludge warehouse 1 is, it can be achieved that sludge
Broken arch and precrushing.
Above-mentioned system, the 2, second screw conveyor of first screw conveyor (dewatered sludge discharging spiral) are (primary
Sludge discharges spiral) 7 and third screw conveyor (solidification auxiliary material discharge spiral) 11 be all made of shaftless screw, frequency control is adjusted
Save unit time load.
Above-mentioned system, second belt conveyor (middle sand belt conveyer) 9 use frequency control, when adjusting unit
Between load.
Above-mentioned system, the sludge crusher 3 are oppositely rolling roller crusher；The oppositely rolling roller crusher motor is equipped with protection
Switch autostop and is alarmed when current is excessive, and motor can invert when maintenance.
At work, frame dehydration sludge is unloaded into dewatered sludge warehouse 1 system of the present embodiment, in dewatered sludge warehouse
When 1 door opens charging, triggering automatic inductor starting spray deodorization device 5 carries out deodorization medicament spray, reduces foul smell and dissipates and overflows.
Sludge crusher 3, which is delivered to, according to setting rate by the first screw conveyor (dewatered sludge discharging spiral) 2 is broken into dehydration
Sludge fritter, while starting vibrator carries out Vibrated baiting, dewatered sludge fritter when the first screw conveyor 2 falls without material
Sludge falls to the first belt conveyor 4 and is delivered in second level mixed stirring device 13.
Primary sludge in primary warehouse of sludge 6 is by the second screw conveyor (primary sludge discharging spiral) 7 by setting
Rate enters in level-one mixed stirring device 12, and middle sand hopper 8 passes through the second skin with the material solidified in auxiliary material storage tank 10 respectively
Band conveyer 9 and third screw conveyor (solidification auxiliary material discharging spiral) 11 enter in level-one mixed stirring device 12, and middle sand rises
Skeleton function, solidification auxiliary material play solidification.After realizing primary sludge primary solidification in level-one mixed stirring device 12, enter
In second level mixed stirring device 13.In second level mixed stirring device 13, the primary sludge of primary solidification is mixed with dewatered sludge fritter
Blending is closed, wherein dewatered sludge fritter plays skeleton function and the primary sludge package that is cured, reach the cured effect of collaboration, Gu
Sludge is in that large-scale bulk enters landfill yard after change.
Embodiment 2
In a comprehensive fixed-end forces garden, frame dehydration sludge average moisture content 58.1%, primary sludge average moisture content
80%.In conventional primary sludge curing project, sand, cement and curing agent are solidified in, and each weight of material proportion is original
Primary sludge: middle sand: cement: curing agent=1: 0.2: 0.2: 0.05.
A kind of method that collaboration of the invention solidifies dewatered sludge Yu primary sludge, includes the following steps:
(1) by primary sludge and middle sand, solidification auxiliary material (cement, curing agent) primary sludge according to the weight ratio: middle sand: cement:
Curing agent=1: in level-one blender carry out level-one stirring at 0.1: 0.2: 0.05, and level-one mixing time is 2min, tentatively solid to carry out
Change, obtains the primary sludge of primary solidification；Dewatered sludge is crushed, dewatered sludge fritter, partial size 5cm are obtained.
(2) secondary blender is delivered to dewatered sludge fritter by primary solidification is primary, and carry out in secondary blender
Dewatered sludge fritter and the primary sludge of primary solidification carry out second level stirring, and second level mixing time is 2min, are solidified, are solidified
Cheng Zhong, dewatered sludge fritter play certain skeleton function and the primary sludge package that is cured, reach the cured effect of collaboration, obtain
Solidification sludge.
In whole process, by adjusting dewatered sludge discharging spiral frequency, the conveying of dewatered sludge and primary sludge is controlled
Rate (discharge velocity) is than being 1: 0.5~1: 1.5, and control is 1: 0.6 in the present embodiment, i.e. control dewatered sludge and primary sludge
Quality be 1: 0.6.
Resulting solidification sludge parameter are as follows: moisture content 49.2%, unconfined compressive strength 56.3KN/m2, four-bladed vane is anti-
Cutting intensity is 32.06KN/m2, infiltration coefficient 6.12*10-6Cm/s carries out sanitary landfills disposition and meets index of correlation requirement.
Embodiment 3
In a comprehensive fixed-end forces garden, frame dehydration sludge average moisture content 59.0%, primary sludge average moisture content
80%.In conventional primary sludge curing project, sand, cement and curing agent are solidified in, and each weight of material proportion is original
Primary sludge: middle sand: cement: curing agent=1: 0.2: 0.2: 0.05.
A kind of method that collaboration of the invention solidifies dewatered sludge Yu primary sludge, includes the following steps:
(1) by primary sludge and middle sand, solidification auxiliary material (cement, curing agent) primary sludge according to the weight ratio: middle sand: cement:
Curing agent=1: in level-one blender carry out level-one stirring at 0.1: 0.2: 0.05, and level-one mixing time is 2.5min, preliminary to carry out
Solidification, obtains the primary sludge of primary solidification；Dewatered sludge is crushed, dewatered sludge fritter, partial size 4cm are obtained；
(2) secondary blender is delivered to dewatered sludge fritter by primary solidification is primary, and be dehydrated in secondary blender
Sludge fritter and the primary sludge of primary solidification carry out second level stirring, and second level mixing time is 2.5min, are solidified, solidification process
In, dewatered sludge fritter plays certain skeleton function and the primary sludge package that is cured, reach the cured effect of collaboration, consolidate
Change sludge.
In whole process, by adjusting dewatered sludge discharging spiral frequency, control dewatered sludge and primary sludge discharging speed
Rate ratio is 1: 1.1, i.e., the quality of control dewatered sludge and primary sludge is 1: 0.6.
Resulting solidification sludge parameter are as follows: moisture content 49.7%, unconfined compressive strength 70.5KN/m2, four-bladed vane is anti-
Cutting intensity is 36.08KN/m2, infiltration coefficient 4.06*10-6Cm/s carries out sanitary landfills disposition and meets index of correlation requirement.
Embodiment 4
In a comprehensive fixed-end forces garden, frame dehydration sludge average moisture content 60%, primary sludge average moisture content 80%.
In conventional primary sludge curing project, sand, cement and curing agent are solidified in, and each weight of material proportion is primary dirt
Mud: middle sand: cement: curing agent=1: 0.2: 0.2: 0.05.
A kind of method that collaboration of the invention solidifies dewatered sludge Yu primary sludge, includes the following steps:
It is 1: 1.4 by adjusting dewatered sludge discharging spiral frequency to control dewatered sludge and primary sludge discharge velocity ratio, that is, controls
The quality of dewatered sludge processed and primary sludge is 1: 1.4, dewatered sludge by entering secondary blender after broken, primary sludge with
Middle sand and solidification auxiliary material (cement, curing agent) are mixed with according to primary sludge: middle sand: cement: curing agent=1: 0.1: 0.2: 0.05,
Enter secondary blender after level-one blender primary solidification, dewatered sludge fritter and primary solidification are carried out in secondary blender
Primary sludge mix blending, dewatered sludge fritter play certain skeleton function and the primary sludge package that is cured, it is solid to reach collaboration
The effect of change.
Level-one mixing time is 3min, and second level mixing time is 3min, and dewatered sludge fritter partial size is 4.0cm.
The moisture content of obtained solidification sludge is 48.6%, unconfined compressive strength 83.2KN/m2, vane is strong
Degree is 40.01KN/m2, infiltration coefficient 3.02*10-5Cm/s carries out sanitary landfills disposition and meets index of correlation requirement.
According to relevant national standard, need to meet into landfill yard Sludge Property claimed below: unconfined compressive strength >=50KN/
m2, vane strength >=25KN/m2, infiltration coefficient 10-6Cm/s~10-5Cm/s, moisture content≤60%.The present invention utilizes
Comprehensive fixed-end forces garden (project of frame dehydration containing anaerobic digestion and primary sludge curing project) two kinds of sludge shale features, and
It is organically combined and carries out collaboration curing process, there is reasonability, technical feasibility, do not increasing production auxiliary materials cost item additionally
Under part, reach frame dehydration sludge with primary sludge and cooperate with solidification effect, meets landfill yard and march into the arena requirement.
Although the present invention is disclosed as above with preferred embodiment, however, it is not intended to limit the invention.It is any to be familiar with ability
The technical staff in domain, without deviating from the scope of the technical scheme of the present invention, all using the technology contents pair of the disclosure above
Technical solution of the present invention makes many possible changes and modifications or equivalent example modified to equivalent change.Therefore, all
Without departing from the content of technical solution of the present invention, according to the present invention technical spirit any simple modification made to the above embodiment,
Equivalent variations and modification, all shall fall within the protection scope of the technical scheme of the invention.
Claims (10)
1. a kind of method that collaboration solidifies dewatered sludge Yu primary sludge, which comprises the steps of:
S1, primary sludge and middle sand, solidification auxiliary material progress level-one are stirred, and carry out primary solidification, obtain primary solidification
Sludge；
S2, primary solidification sludge is stirred with through broken dewatered sludge progress second level, and carries out collaboration solidification, consolidate
Change sludge.
2. the method that collaboration as described in claim 1 solidifies dewatered sludge Yu primary sludge, which is characterized in that in mass ratio
Meter, dewatered sludge: primary sludge is 1: 0.5~1.5.
3. the method that collaboration as described in claim 1 solidifies dewatered sludge Yu primary sludge, which is characterized in that the step S1
In, the solidification auxiliary material is cement and curing agent；It counts in mass ratio, primary sludge: middle sand: cement: curing agent 1: 0.1~
0.3: 0.1~0.3: 0.02~0.1.
4. the method that the collaboration as described in claims 1 to 3 any one solidifies dewatered sludge Yu primary sludge, feature exist
In in the step S2, the partial size < 10cm through broken dewatered sludge, the dewatered sludge is detesting through frame dehydration
Oxygen digested sludge.
5. the method that the collaboration as described in claims 1 to 3 any one solidifies dewatered sludge Yu primary sludge, feature exist
In in the step S1, the time that the level-one is stirred is 2~3min；In the step S2, the second level is stirred
Time be 2~5min.
6. the system that a kind of collaboration solidifies dewatered sludge Yu primary sludge, which is characterized in that including second level mixed stirring device
(13), for storing, broken dewatered sludge and the dehydration that conveys broken dewatered sludge to second level mixed stirring device (13) it is dirty
It mud storage-broken-conveying mechanism and is mixed and fills for blending the primary sludge of mix, middle sand and solidify the level-one of auxiliary material
It sets (12), the feed inlet of the discharge port of the level-one mixed stirring device (12) and the second level mixed stirring device (13) connects
It connects.
7. the system that collaboration as claimed in claim 6 solidifies dewatered sludge Yu primary sludge, which is characterized in that the dehydration is dirty
Mud storage-broken-conveying mechanism includes dewatered sludge warehouse (1), sludge crusher (3), the first screw conveyor (2) and first
Belt conveyor (4), the dewatered sludge warehouse (1) are connected to the first screw conveyor (2), first screw conveyor
(2) discharge port is located above the feed inlet of the sludge crusher (3), and first belt conveyor (4) is set to described
Below the discharge port of sludge crusher (3), first belt conveyor (4) is prolonged far from the one end of the sludge crusher (3)
It extends in the second level mixed stirring device (13).
8. the system that collaboration as claimed in claims 6 or 7 solidifies dewatered sludge Yu primary sludge, which is characterized in that further include
Primary warehouse of sludge (6), middle sand hopper (8), solidification auxiliary material storage tank (10), the second screw conveyor (7), the second belt conveyor
(9) and third screw conveyor (11), second belt conveyor (9) are set to the lower section of middle sand hopper (8) discharge port,
Second belt conveyor (9) extends in the level-one mixed stirring device (12) far from the one end of middle sand hopper (8), institute
The feed inlet for stating the second screw conveyor (7) is connected to the discharge port of the primary warehouse of sludge (6), the third helical feed
The feed inlet of machine (11) is connected to the discharge port for solidifying auxiliary material storage tank (10), second screw conveyor (7) and third
The discharge port of screw conveyor (11) all extends in the level-one mixed stirring device (12).
9. the system that collaboration as claimed in claims 6 or 7 solidifies dewatered sludge Yu primary sludge, which is characterized in that further include
For the spray deodorization device (5) to the dewatered sludge warehouse (1) spray deodorization medicament；
The charging door of the dewatered sludge warehouse (1) is equipped with automatic inductor, the automatic inductor and spray deodorization device
(5) automatic linkage.
10. the system that collaboration as claimed in claims 6 or 7 solidifies dewatered sludge Yu primary sludge, which is characterized in that described de-
The vibrator for being used to eliminate arch formation, and two vibrators are respectively arranged in the middle part and lower part of sewage sludge warehouse (1) outer wall
Opposite arrangement；
First belt conveyor (4) and the second belt conveyor (9) are respectively provided with fender in the two sides along conveying direction,
The conveying end of two belt conveyors is equipped with cleaning shoe.
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Application publication date: 20190412 |