CN105366901B - A kind of method for sludge treatment improving dehydration efficiency - Google Patents
A kind of method for sludge treatment improving dehydration efficiency Download PDFInfo
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- CN105366901B CN105366901B CN201510935789.4A CN201510935789A CN105366901B CN 105366901 B CN105366901 B CN 105366901B CN 201510935789 A CN201510935789 A CN 201510935789A CN 105366901 B CN105366901 B CN 105366901B
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- 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
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- 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
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- 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
- C02F2303/06—Sludge reduction, e.g. by lysis
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- Environmental & Geological Engineering (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
A kind of method for sludge treatment improving dehydration efficiency, includes the following steps：A, heavy metal biochemical treatment；B, sludge dewatering improves；C, sludge dewatering is dried；The sludge dewatering is dried, the pressure in upper tank body is set to enhance by pressue device, by vacuum tank so that pressure reduction in lower tank is to vacuum state, larger pressure difference is so formed between upper tank body and lower tank, the water in water-containing sludge mixing liquid in upper tank body can run through filter layer, and sludge then stays in the top of filter layer, and since pressure difference can be formed between upper tank body and lower tank, guarantee is quickly separated by solid-liquid separation, after separation of solid and liquid finishes, start microwave launcher and discharges microwave, microwave is acted on the hydrone in sludge and is heated, so that the moisture contained by sludge can spread and evaporate into air, the effect of reaching dry sludge.
Description
Technical field
The present invention relates to a kind of method for sludge treatment, refer in particular to a kind of method for sludge treatment improving dehydration efficiency.
Background technology
In recent years, it with wastewater treatment in China ability and the rapid growth of handling rate, brings excess sludge and largely generates
The phenomenon that.Whole nation urban sewage treatment plant sludge only has fraction to carry out sanitary landfills, land use, burning and building materials profit at present
With etc., most of processing disposition not standardized.
Contain a large amount of larger particles during sewage disposal, in some sewage and is difficult to the suspended matter precipitated, certain
A little particles and suspended matter are difficult to, by biochemical degradation, to be at this time carried out dehydrating sewage again, the shape after dehydration
At filter residue, filter residue can be used as filler recovery to utilize.
Such as in Authorization Notice No. CN204434447U, entitled " a kind of follow-on sludge vacuum dehydration device "
Disclosed in state's patent of invention, a kind of follow-on sludge vacuum dehydration device, including enclosed dirt are described in that patent
Water surge tank, the sewage surge tank are connected with a dehydrating tube, a vacuum tube and several for being inserted into sludge water
Connecting tube, the other end of the vacuum tube is connected with one for the vacuum pump that vacuumizes, and the other end of the connecting tube is detachable
Ground is socketed with a sewage permeation connector, and the sewage permeation connector is for stopping that sludge enters the connecting tube, the vacuum in company with flow
Pipe is interconnected with connecting tube by the sewage surge tank；One end of the dehydrating tube be arranged the bottom of sewage surge tank,
And it is connected with a water pump, the outside on sewage surge tank top is arranged in the other end, and a water level control is additionally provided on the dehydrating tube
Device；The top of the sewage surge tank is additionally provided with a limit switch, which is used to control the unlatching of the vacuum pump
Or it closes.
In that patent, by negative-pressure vacuum, the moisture in sludge is separated by sewage permeation connector and sludge, and takes out
It is sent in sewage surge tank, completes the dehydration of sludge, however that there is sewage dehydration rates is low, dehydration efficiency is relatively low for the device
And filter residue not disposable utilization the characteristics of.
Invention content
The present invention provides a kind of method for sludge treatment improving dehydration efficiency, and main purpose is to overcome at existing sludge
Sewage dehydration rate existing for reason method is low, dehydration efficiency is relatively low and the not disposable defect utilized of filter residue.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of method for sludge treatment improving dehydration efficiency, includes the following steps：A, heavy metal biochemical treatment；B, sludge is de-
Water improves；C, sludge dewatering is dried；The sludge dewatering drying includes that when in use, water-containing sludge mixing liquid is drawn into
In tank body, mud inlet is closed later, starts pressue device and vacuum extractor, the pressure in upper tank body is made by pressue device
Enhancing, by vacuum tank so that pressure reduction in lower tank is to vacuum state, formed between such upper tank body and lower tank compared with
Big pressure difference, the water in water-containing sludge mixing liquid in upper tank body can run through filter layer, and sludge then stays
In the top of filter layer, and due to that can form pressure difference between upper tank body and lower tank, guarantee is quickly separated by solid-liquid separation,
After separation of solid and liquid finishes, starting microwave launcher and discharge microwave, microwave is acted on the hydrone in sludge and is heated,
So that the effect of moisture contained by sludge can spread and evaporate into air, reach dry sludge.
Further, in the step c, the sludge dewatering drying further includes that the moisture to get off is permeated from filter layer
Sewage plash is mainly drained by the first discharge outlet, and the vapor in lower tank can enter vacuum tank by connecting tube simultaneously
Wastewater influent pond is drained into from the second discharge outlet, to ensure that moisture can fully be discharged.
Further, in the step c, the sludge dewatering drying further includes making microwave using metallic shield technology
Reflection is repeated in microwave heating equipment, the microwave generated in drying process is avoided to leak, and then sludge can be made uniformly to be added
Heat drying, improves the drying effect of sludge.
Further, in the step c, the sludge dewatering drying further includes, in carrying out microwave heating process, vacuum
Tank can act on simultaneously, cause to form a negative pressure inside lower tank, and to generate an air-flow, the water for taking away heating process generation steams
Vapour, using entering vacuum tank after the mesh of metallic shield net and drain into from the second discharge outlet wastewater influent pond.
Further, in the step b, the sludge dewatering conditioning includes successively sequentially adding the mistake of three kinds of conditioning material
Journey, the conditioning material being added for the first time fly for thermal power plant ash, and second of conditioning material being added is ferric chloride solution or cation
Property polyelectrolyte, last time be added conditioning material be polymethacrylates system both sexes co-polymer, the sludge dewatering tune
Reason further includes, in use, when sludge raw material and three kinds of conditioning material are fully immersed in the second tank body, by pressurization, improve this second
The pressure of tank interior can increase Interstitial Water and three kinds of conditioning material pair after the ventilation of the second tank body internal cause causes air pressure to increase
The infiltration of sludge internal void reinforces the contact frequency of three kinds of conditionings material and sludge, the effect of its opsonic reaction is improved, when second
After pressure increases to 700kPa in tank body, after second pressure sensory package detects the pressure peak threshold value, touch stop to
Ventilation in second tank body, and start the second relief valve simultaneously, above-mentioned second relief valve controls the exhaust of the second tank body, by the second tank body
Internal pressure is reduced to atmospheric pressure, the top of second tank body to generate a large amount of microbubble because of exhaust by 700kPa,
Gas in gap water can disengage and take the product after opsonic reaction out of sludge hole, since the hole of sludge is too small, decompression
When the rate disengaged of gas commonly greater than the rate that gas is discharged from hole, therefore sludge pore interior pressure is caused to increase,
When sludge pore interior pressure is more than the pressure that mud granule wall can bear, mud granule will be caused to implode or fry
It splits, the exposed amount of polyelectrolyte and organic matter in sludge is made to increase, the gas-solid contact for greatling improve it with three kinds of conditioning material is imitated
Fruit enhances its physical and chemical reaction, so as to reduce the yield stress and appearance viscosity of sludge, helps to improve sludge dewatering
Effect, when the pressure recovery in the first tank body is to general atmosphere pressure, first pressure sensory package detects that the pressure is minimum
After point threshold value, shake-up is ventilated into the first tank body again, and simultaneously closes off the first relief valve, again by the first tank interior pressure
It is depressurized to atmospheric pressure again after promoting 700kPa, constantly the cycle of completion supercharging and decompression, until sludge completes whole take off
Water improves.
Further, in the step b, the sludge dewatering conditioning further includes sludge raw material and three kinds of conditioning material difference
Entered in the second tank body by second charging aperture and the second feeding port, and the forced air generated by Blast mechanism is by the second tank
The bottom of body generates bubble, and is injected in the second drainage channel by the second under shed of the second drainage hood, and in the work of air-flow
It is flowed out and is settled by opening on the second of the second drainage hood under and flowed back into the second tank body, flow back into the sludge in the second groove body
Raw material and three kinds of conditioning material are inhaled into from the second under shed of the second drainage hood by airflow function, are promoted to the second drainage hood again
It is interior, to the iterative cycles between the second tank body and the second drainage hood so that sludge raw material and three kinds of conditioning material obtain adequately
Gas-solid contact effect helps to improve sludge dewatering effect so as to reduce the yield stress and appearance viscosity of sludge.
Further, in the step a, the heavy metal biochemical treatment includes holding pending sludge input one
Have in the first tank body of the culture solution of oxidation-containing sulfur bacillus, wherein first tank base is equipped with the first blow vent, and inside plugs
There is the first drainage hood, be aerated into the first tank body by the first blow vent, air-flow is from the first under shed of the first drainage hood to
Flowing in one drainage hood, forms irregular vortex and negative pressure in the first drainage hood, sludge, thiobacillus thiooxidant and culture solution from
The bottom of drainage hood is inhaled into, is promoted into the first drainage hood and is sufficiently mixed, and by the first drainage hood under the action of air-flow
Opening is flowed out and is settled and flows back into the first tank body on first, flows back into sludge, thiobacillus thiooxidant and the culture in the first tank body
Liquid is inhaled into from the bottom of the first drainage hood by airflow function, is promoted into the first drainage hood again, in the first tank body and
Iterative cycles between first drainage hood so that the heavy metal and thiobacillus thiooxidant of sludge obtain sufficient gas-solid contact effect, make
It obtains heavy metal to be dissolved out from sludge by the oxidation and acidification of thiobacillus thiooxidant, eliminates the content of heavy metal in sludge.
Further, in the step a, the heavy metal biochemical treatment packet further includes, when the ventilation of the first tank body internal cause is led
After causing air pressure to increase, the infiltration of Interstitial Water and thiobacillus thiooxidant to sludge internal void can be increased, oxidation reinforced Thiobacillus with
The contact frequency of sludge improves its ability for absorbing heavy metal in sludge, after pressure increases to 700kPa in the first tank body, the
After one pressure sensor module detects the pressure peak threshold value, touches and stop ventilating into the first tank body, and start the simultaneously
One relief valve, above-mentioned first relief valve control the exhaust of the first tank body, the pressure of the first tank interior are reduced to greatly by 700kPa
The top of air pressure, first tank body generates a large amount of microbubble because of exhaust, and the gas in Interstitial Water can disengage and will a huge sum of money
Belong to and reaction after product take sludge hole out of, since the hole of sludge is too small, the rate that gas disengages when decompression is often big
In the rate that gas is discharged from hole, therefore sludge pore interior pressure is caused to increase, when sludge pore interior pressure is more than
When the pressure that mud granule wall can bear, mud granule will be caused to implode or burst, make the sudden and violent of heavy metal in sludge
Dew amount increases, and greatlys improve the gas-solid contact effect of heavy metal and thiobacillus thiooxidant, enhances its biochemical reaction, greatly improve
The removal effect of Heavy Metals in Sludge, when the pressure recovery in the first tank body is to general atmosphere pressure, first pressure sensing
After component detection to the pressure minimum point threshold value, shake-up is ventilated into the first tank body again, and simultaneously closes off the first relief valve, then
It is secondary to be depressurized to atmospheric pressure again after first tank interior boost in pressure to 700kPa, the cycle of supercharging and decompression is constantly completed,
Until sludge completes the removal of heavy metal.
Compared to the prior art, the advantageous effect that the present invention generates is:
1, present invention process is simple, highly practical, by the way that sewage solution to be transported to from mud inlet in upper tank body, later
Mud inlet is closed, pressue device and vacuum extractor are started, pressure enhancing when passing through pressue device in upper tank body, by true
Slack tank makes the pressure reduction in lower tank to vacuum state, and larger pressure difference is formed between such upper tank body and lower tank,
The moisture in sewage solution in upper tank body can run through filter layer, and body refuse then stays in the top of filter layer, when
When going back residual moisture in body refuse, since the water seal of moisture acts on, pressure difference can be formed between upper tank body and lower tank, is ensured fast
Speed carries out grain slag separation and passes through the stomata in body refuse between upper tank body and lower tank after the moisture removal in body refuse finishes
Realize connection, the pressure of upper tank body reduces rapidly, and may determine that sludge is processed by pressure monitoring device finishes, by will under
Tank body is dismantled, and body refuse is cleaned out, and body refuse can be used in building filler or compound fertilizer etc. fields and be recycled.
In the present invention, the moisture to get off is permeated from filter layer, sewage plash is mainly drained by the first discharge outlet, and in lower tank
Vapor can enter vacuum tank by connecting tube and drain into wastewater influent pond from the second discharge outlet, to ensure that moisture
It can fully be discharged.
2, in the present invention, place's microwave can be discharged by microwave heating equipment so that the hydrone in sludge is micro- with this
Wave is interacted and is heated, so that the moisture contained by sludge can spread and volatilize, achievees the purpose that dry sludge.
3, in the present invention, by the way that metallic shield ring and metallic shield net is arranged, microwave can be made to be filled in microwave heating
Interior repeatable reflection is set, the microwave generated in drying process is avoided to leak.Sludge can also be enable to be heated properly drying simultaneously,
Further increase the drying effect of sludge.
Description of the drawings
Fig. 1 is the structural schematic diagram of sludge treatment device described in embodiment.
Fig. 2 is the enlarged diagram at A in Fig. 1.
Specific implementation mode
Illustrate the specific implementation mode of the present invention with reference to the accompanying drawings.
Referring to Figures 1 and 2.A kind of sludge treatment device, including the sludge heavy-metal that sludge 9 is successively passed through successively are biochemical
It handles tank body 1, sludge dewatering conditioning tank body 2 and a sludge dewatering and dries tank body 3.
Referring to Figures 1 and 2.The sludge heavy-metal biochemical treatment tank body 1 including one first tank body 10, one be set to this
The first drainage hood 11 inside one tank body 10 and a Blast mechanism 4, be provided on first tank body 10 one for launch contain
The first charging aperture 101, one of the sludge raw material of heavy metal is used to launch the first feeding port 102 of the nutrient solution of oxidation-containing sulfur bacillus
And first blow vent 103 that is connected with Blast mechanism 4, first blow vent 103 are located at first tank body 10
Bottom, first drainage hood 11 include being opened under first of opening on one first, one right over first blow vent 103
Mouthful and one the first drainage channel for being open and being formed is extended on first by the first under shed.101 He of the first charging aperture
First feeding port 102 is respectively set to the both sides of 10 upper end of the first tank body, and first tank body 10 is a Heat Conduction Material tank body,
First tank body 10 is additionally provided with a heating part, which is one around the snake for being set to 10 lateral wall of the first tank body
Shape pipeline 108, the thermostat which is contained with heating fluid with one are connected, the heavy metal biochemical treatment
Tank body 1 further include a first pressure sensory package 17 for being set to 10 top of the first tank body and one with the first pressure sensing group
One first relief valve 18 that part 17 is electrically connected, first relief valve 18 is for controlling 10 internal liquid level upper air of the first tank body
Discharge and closing.
Referring to Figures 1 and 2.Sludge dewatering conditioning tank body 2 including one second tank body 20 and one be set to this second
The second drainage hood 21 inside tank body 20 is provided with one on second tank body 20 for by the second charging aperture of sludge raw material
22, second blow vent 24 being also connected with Blast mechanism 4 for launching the second feeding port 23 and one of conditioning material, it is described
Second blow vent 24 is located at the bottom of second tank body 20, second drainage hood 21 include on one second opening, one be located at
The second under shed and one right over second blow vent 24, which are extended to by the second under shed on second, to be open and is formed
Second drainage channel, the second charging aperture 22 are communicated in first blow vent 103.The sludge dewatering conditioning tank body 2 is also
The second pressure sensory package 27 for being set to 20 top of the second tank body including one and one with 27 electricity of the second pressure sensory package
One second relief valve 28 of connection, second relief valve 28 are used to control the discharge of 20 internal liquid level upper air of the second tank body
With closing.A plurality of spaced apart conduction holes 210 are provided on second drainage hood 21,210 top of the conduction hole is set
It is equipped with the drainage cap 211 protruded outwardly.It includes three kinds successively sequentially added that conditioning material is launched into second feeding port 23
Conditioning material, the conditioning material being added for the first time fly for thermal power plant ash, and second of conditioning material being added is ferric chloride solution or sun
Ionic polyelectrolyte, the conditioning material that last time is added are polymethacrylates system both sexes co-polymer.
Referring to Figures 1 and 2.The sludge dewatering drying tank body 3 includes the upper tank body 30 and upper end opening of lower ending opening
Lower tank 31, the lower end and the upper end of lower tank 31 of upper tank body 30 are removably joined together, be connected on upper tank body 30 with
The pressue device 32 of the inner cavity connection of upper tank body 30, is additionally provided on upper tank body 30 sludge solutions are sent into upper tank body 30
Mud inlet 33 is equipped in the lower tank 31 sludge solutions are carried out with the filter layer 34 of grain slag separation, there is the on lower tank 31
One pressure modulating opening 310, the first pressure modulating opening 310 are arranged in the lower section of filter layer 34, further include vacuum tank 35, and vacuum tank 35 is equipped with the
Two pressure modulating openings 350, the first pressure modulating opening 310 are connected to by connecting tube with the second pressure modulating opening 350, are connected with and vacuumize on vacuum tank 35
Device 36, is equipped with the first discharge outlet 312 on lower tank 31, and the first discharge outlet 312 is connected to sewage by the first drainpipe and accumulates
Pond 37, the first discharge outlet 312 are arranged in the lower section of the first pressure modulating opening 310, and the second discharge outlet 352 is equipped on vacuum tank 35,
Second discharge outlet 352 is arranged in the lower section of the second pressure modulating opening 350, and the second discharge outlet 352 is connected to sewage by the second drainpipe
Plash 37, the lower tank 31 are additionally provided with a microwave heating equipment 38 and third pressure modulating opening 311 in the top of filter layer 34,
The microwave heating equipment 38 includes a plurality of microwave launchers 380 and is coated on the outside of the microwave launcher 380
Metallic shield ring 381,381 outside of metallic shield ring are installed on 31 internal face of the lower tank, and the lower tank 31 is in third
The metallic shield net 382 for coating entire third pressure modulating opening 311 is provided at 311 position of pressure modulating opening, the vacuum tank 35 is equipped with
4th pressure modulating opening 351, the third pressure modulating opening 311 are connected to the 4th pressure modulating opening 351 by connecting tube.Under the upper tank body 30
End is connected with upper flange, and the upper end of the lower tank 31 is connected with lower flange, and upper flange is detachable by connector with lower flange
Ground links together, and silicone gasket is equipped between upper flange and lower flange.The inner wall of the lower tank 31 is equipped with circumferential support
Platform, the filter layer 34 include sieve tray 340 and the strainer 341 being arranged on sieve tray 340, and sieve tray 340 is erected at ring-type
In supporting table.One is additionally provided in the upper tank body 30 to monitor the pressure monitoring device 305 of 30 chamber pressure of upper tank body, institute
It includes showing the first pressure gauge of positive pressure and to show the second pressure gauge of negative pressure to state pressure monitoring device 305.It is described
The mesh of metallic shield net 382 is smaller than presetting the microwave wavelength that the microwave launcher 380 generates.
Referring to Figures 1 and 2.The Blast mechanism 4 is provided with a triple valve, and the other two-way of the triple valve is connected to institute
It states on the first blow vent 103 and the second blow vent 24.
Referring to Figures 1 and 2.The course of work of the present invention is a kind of method for sludge treatment.
A kind of processing method of sludge, includes the following steps：A, heavy metal biochemical treatment；B, sludge dewatering improves；C, dirt
Mud dehydrates.
Wherein, the heavy metal biochemical treatment includes that pending sludge input one is contained with oxidation-containing sulfur bacillus
In first tank body 10 of culture solution, wherein 10 bottom of the first tank body is equipped with the first blow vent 103, and inside is inserted with the first drainage
Cover 11, is aerated by the first blow vent 103 into the first tank body 10, and air-flow is from the first under shed of the first drainage hood 11 to first
Flowing in drainage hood 11 forms irregular vortex and negative pressure, sludge, thiobacillus thiooxidant and culture solution in the first drainage hood 11
It is inhaled into from the bottom of drainage hood, promoted into the first drainage hood 11 and be sufficiently mixed, and by the first drainage under the action of air-flow
Opening is flowed out and is settled and flows back into the first tank body 10 on the first of cover 11, flows back into sludge, the sulfur oxide in the first tank body 10
Bacillus and culture solution are inhaled into from the bottom of the first drainage hood 11 by airflow function, are promoted into the first drainage hood 11 again, from
And the iterative cycles between the first tank body 10 and the first drainage hood 11 so that the heavy metal and thiobacillus thiooxidant of sludge obtain abundant
Gas-solid contact effect so that heavy metal is dissolved out by the oxidation and acidification of thiobacillus thiooxidant from sludge, eliminate sludge in
The content of heavy metal.In this step, by the way that first pressure sensory package 17 and the first relief valve 18 is arranged, and coordinate air blower
The ventilation of structure 4 acts on, and can form a pressures cycle processing system, after the ventilation of 10 internal cause of the first tank body causes air pressure to increase,
The infiltration of Interstitial Water and thiobacillus thiooxidant to sludge internal void, contact frequency of the oxidation reinforced Thiobacillus with sludge can be increased
Rate improves its ability for absorbing heavy metal in sludge, after pressure increases to 700kPa in the first tank body 10, first pressure sensing
After component 17 detects the pressure peak threshold value, touches Blast mechanism 4 and stop ventilating into the first tank body 10, and start simultaneously
First relief valve 18, above-mentioned first relief valve 18 control the exhaust of the first tank body 10, by the pressure inside the first tank body 10 by
700kPa is reduced to atmospheric pressure, the top of first tank body 10 to generate a large amount of microbubble because of exhaust, the gas in Interstitial Water
Cognition disengages and takes the product after heavy metal and reaction out of sludge hole.Since the hole of sludge is too small, gas when decompression
The rate disengaged causes sludge pore interior pressure to increase commonly greater than the rate that gas is discharged from hole.Work as sludge
When pore interior pressure is more than the pressure that mud granule wall can bear, mud granule will be caused to implode or burst, made
The exposed amount of heavy metal increases in sludge, greatlys improve the gas-solid contact effect of heavy metal and thiobacillus thiooxidant, enhances its life
Change reaction, the removal effect of Heavy Metals in Sludge is greatly improved, when the pressure recovery in the first tank body 10 to general atmosphere
When pressure, after first pressure sensory package 17 detects the pressure minimum point threshold value, Blast mechanism 4 is touched again to the first tank body
Ventilation in 10, and the first relief valve 18 is simultaneously closed off, it is dropped again after again promoting 10 internal pressure of the first tank body to 700kPa
It is depressed into atmospheric pressure, constantly completes the cycle of supercharging and decompression, until sludge completes the removal of heavy metal.
Wherein, the sludge dewatering conditioning includes successively sequentially adding the process of three kinds of conditioning material, is added for the first time
Conditioning material is that thermal power plant ash flies, and the second conditioning material that is added is ferric chloride solution or cationic polyelectrolytes, finally
The conditioning material being once added is polymethacrylates system both sexes co-polymer.In this step, when sludge raw material and three kinds are adjusted
Reason material is fully immersed in the second tank body 20, and the Blast mechanism 4 improves the pressure inside second tank body 20 by pressurization, when
After the ventilation of second tank body, 20 internal cause causes air pressure to increase, Interstitial Water can be increased and three kinds of conditioning material ooze sludge internal void
Thoroughly, the contact frequency for reinforcing three kinds of conditionings material and sludge, improves the effect of its opsonic reaction, when pressure increases in the second tank body 20
To after 700kPa, after second pressure sensory package 27 detects the pressure peak threshold value, touches Blast mechanism 4 and stop to second
Ventilation in tank body 20, and start the second relief valve 28 simultaneously, above-mentioned second relief valve 28 controls the exhaust of the second tank body 20, by second
Pressure inside tank body 20 is reduced to atmospheric pressure by 700kPa, and the top of second tank body 20 generates a large amount of micro- because of exhaust
Bubble, the gas in Interstitial Water can disengage and take the product after opsonic reaction out of sludge hole.Due to the hole mistake of sludge
Small, the rate that gas disengages when decompression causes sludge pore interior pressure commonly greater than the rate that gas is discharged from hole
Power increases.When sludge pore interior pressure is more than the pressure that mud granule wall can bear, mud granule will be caused inside
It ruptures or bursts, the exposed amount of polyelectrolyte and organic matter in sludge is made to increase, greatly improve the gas of itself and three kinds of conditioning material
Affixed tactile effect, enhances its physical and chemical reaction, so as to reduce the yield stress and appearance viscosity of sludge, helps to improve
Sludge dewatering effect, when the pressure recovery in the first tank body 10 is to general atmosphere pressure, first pressure sensory package 17 detects
To after the pressure minimum point threshold value, touches Blast mechanism 4 and ventilate again into the first tank body 10, and simultaneously close off the first relief valve
18, it is depressurized to atmospheric pressure again after again promoting 10 internal pressure of the first tank body to 700kPa, constantly completes supercharging and decompression
Cycle, until sludge completes whole dehydrating and conditioning.
More specifically, during the sludge dewatering improves, sludge raw material and three kinds of conditioning material are respectively by the second charging
Mouth 22 and the second feeding port 23 enter in the second tank body 20, and the forced air generated by Blast mechanism 4 is by the second tank body
20 bottom generates bubble, and is injected in the second drainage channel by the second under shed of the second drainage hood 21, and in air-flow
It is flowed out and is settled by opening on the second of the second drainage hood 21 under effect and flowed back into the second tank body 20, flowed back into the second groove body
Sludge raw material and three kinds of conditioning material be inhaled into, promoted to the from the second under shed of the second drainage hood 21 by airflow function again
In two drainage hoods 21, to the iterative cycles between the second tank body 20 and the second drainage hood 21 so that sludge raw material and three kinds of tune
Reason material obtains sufficient gas-solid contact effect, so as to reduce the yield stress and appearance viscosity of sludge, helps to improve sludge
Dehydrating effect.
Wherein, the sludge dewatering drying includes that when in use, water-containing sludge mixing liquid is drawn into upper tank body 30,
Mud inlet 33 is closed later, starts pressue device 32 and vacuum extractor 36, is made in upper tank body 30 by pressue device 32
Pressure enhances, and makes the pressure reduction in lower tank 31 to vacuum state, such upper tank body 30 and lower tank by vacuum tank 35
Larger pressure difference is formed between 31, the water in the water-containing sludge mixing liquid in upper tank body 30 can run through filtering
Layer 34, and sludge then stays in the top of filter layer 34, and since pressure difference can be formed between upper tank body 30 and lower tank 31,
Guarantee is quickly separated by solid-liquid separation, and after separation of solid and liquid finishes, is started microwave launcher 380 and is discharged microwave, microwave and dirt
Hydrone in mud acts on and is heated so that the moisture contained by sludge can spread and evaporate into air, reaches dry sludge
The effect of.After the moisture removal in body refuse finishes, realized by the stomata in body refuse between upper tank body 30 and lower tank 31
Connection, the pressure of upper tank body 30 reduces rapidly, and may determine that sludge is processed by pressure monitoring device 305 finishes, pass through by
Lower tank 31 is dismantled, and body refuse is cleaned out, and body refuse can be used in building filler or compound fertilizer etc. fields and carry out recycling profit
With.In this step, the moisture to get off is permeated from filter layer 34, and sewage plash is mainly drained by the first discharge outlet 312
37, and the vapor in lower tank 31 can be entered vacuum tank 35 by connecting tube and drain into sewage from the second discharge outlet 352
Intake pool, to ensure that moisture can fully be discharged.
Meanwhile making microwave repeat reflection in microwave heating equipment 38 using metallic shield technology, it avoids dried
The microwave generated in journey leaks, and then sludge can be made to be heated properly drying, improves the drying effect of sludge.Add carrying out microwave
In thermal process, vacuum tank 35 can act on simultaneously, cause 31 inside of lower tank to form a negative pressure, to generate an air-flow, take away
The water vapour that heating process generates, using entering vacuum tank 35 after the mesh of metallic shield net 382 and from the second discharge outlet 352
In drain into wastewater influent pond.
Compared to the prior art, the advantageous effect that the present invention generates is:
1, the configuration of the present invention is simple, highly practical, by the way that a heavy metal biochemical treatment tank body is arranged, can by air-flow by
The bottom of first tank body 10 is passed through, and air-flow is flowed from the first under shed of the first drainage hood 11 into the first drainage hood 11,
Irregular vortex is formed in one drainage hood 11 and negative pressure, sludge, thiobacillus thiooxidant and culture solution are inhaled from the bottom of drainage hood
Enter, promoted into the first drainage hood 11 and be sufficiently mixed, and is flowed under the action of air-flow by being open on the first of the first drainage hood 11
Go out and settle to flow back into the first tank body 10, flow back into sludge, thiobacillus thiooxidant and culture solution in the first tank body 10 again by
Airflow function is inhaled into from the bottom of the first drainage hood 11, is promoted into the first drainage hood 11, in the first tank body 10 and the
Iterative cycles between one drainage hood 11 so that the heavy metal and thiobacillus thiooxidant of sludge obtain sufficient gas-solid contact effect, make
It obtains heavy metal to be dissolved out from sludge by the oxidation and acidification of thiobacillus thiooxidant, eliminates the content of heavy metal in sludge.
2, in the present invention, tank body 2 is improved by the way that a sludge dewatering is arranged, after conditioning material is added, passes through Blast mechanism 4
The forced air of generation generates bubble by the bottom of the second tank body 20, and by the second under shed of the second drainage hood 21 injection the
In two drainage channels, and is flowed out and settled by opening on the second of the second drainage hood 21 under the action of air-flow and flow back into the second tank
In body 20, flow back into sludge raw material in the second groove body and three kinds of conditioning material again by airflow function from the second drainage hood 21 the
Two under sheds are inhaled into, are promoted into the second drainage hood 21, to be followed repeatedly between the second tank body 20 and the second drainage hood 21
Ring so that sludge raw material and three kinds of conditioning material obtain sufficient gas-solid contact effects, so as to reduce the yield stress of sludge with
Appearance viscosity helps to improve sludge dewatering effect.
3, in the present invention, the conditioning material of addition not only flies this physics conditioning material including thermal power plant ash, further includes
Ferric chloride solution and polymethacrylates system both sexes co-polymer both chemical conditioning material.Addition thermal power plant ash flies to help
Filter can reduce the dosage of high molecular polymer, and promote the dehydration of sludge when cooperation high molecular polymer carries out multiple conditioning
Efficiency increases the solid content of sludge cake.Additionally by two kinds of chemical conditioning material of setting, and using between two kinds of chemical conditioning material
Reciprocation, cause misfit form, reach better flocculating effect, increase the adhesion between mud granule, formed bigger and
Stronger glue plumage reduces polyelectrolyte and remains in solution, while improving the dehydration property of sludge.
4, in the present invention, tank body 3 is dried by the way that a sludge dewatering is arranged, when in use by sewage solution from mud inlet 33
In be transported in upper tank body 30, mud inlet 33 is closed later, starts pressue device 32 and vacuum extractor 36, passes through the dress that pressurizes
Pressure enhancing when setting 32 in upper tank body 30, by vacuum tank 35 so that the pressure reduction in lower tank 31 is to vacuum state, such as
Larger pressure difference is formed between this upper tank body 30 and lower tank 31, the moisture being located in the sewage solution in upper tank body 30 can
Filter layer 34 is run through, and body refuse then stays in the top of filter layer 34, when going back residual moisture in body refuse, due to the water of moisture
Envelope acts on, and pressure difference can be formed between upper tank body 30 and lower tank 31, ensures quickly to carry out grain slag separation, when the water in body refuse
After dividing removing to finish, it is connected to by the stomata realization in body refuse between upper tank body 30 and lower tank 31, the pressure of upper tank body 30
It reduces rapidly, may determine that sludge is processed by pressure monitoring device 305 finishes, by dismantling lower tank 31, and by mud
Slag cleans out, and body refuse can be used in building filler or compound fertilizer etc. fields and be recycled.In the present invention, from filtering
The moisture to get off is permeated in layer 34, and sewage plash 37 is mainly drained by the first discharge outlet 312, and the water in lower tank 31 steams
Gas can be entered vacuum tank 35 by connecting tube and drain into wastewater influent pond from the second discharge outlet 352, to ensure that moisture
It can fully be discharged.
5, in the present invention, by the way that microwave heating equipment 38 is arranged in lower tank 31, and microwave heating equipment 38 can
With microwave at release so that the hydrone in sludge is interacted with the microwave and heated, so that contained by sludge
Moisture can spread and volatilize, achieve the purpose that dry sludge.
6, in the present invention, pass through the 4th pressure modulating opening 351 on vacuum tank 35 and the third near microwave heating equipment 38
Pumping cooperation between pressure modulating opening 311 causes 38 inside of microwave heating equipment to form a negative pressure, and then generates an air-flow, this gas
The top air inlet of tank body 31 is flowed down, and passes through vacuum tank 35, takes away the water vapour of microwave heating process generation, vapor can lead to
It crosses connecting tube to be delivered in vacuum tank 35, and liquid water is condensed into vacuum tank 35, and sewage is delivered to by the second drainpipe
In plash 37, it can so ensure that the moisture in lower tank 31 is more adequately emitted into sewage plash 37.
7, in the present invention, by the way that metallic shield ring 381 and metallic shield net 382 is arranged, microwave can be made in microwave
Reflection is repeated in heating device 38, and the microwave generated in drying process is avoided to leak.Sludge can also be enable uniform simultaneously
Heating, drying further increases the drying effect of sludge.
8, in the present invention, by the way that first pressure sensory package 17 and the first relief valve 18 is arranged, and coordinate air blower
The ventilation of structure 4 acts on, and can form a pressures cycle processing system, after the ventilation of 10 internal cause of the first tank body causes air pressure to increase,
The infiltration of Interstitial Water and thiobacillus thiooxidant to sludge internal void, contact frequency of the oxidation reinforced Thiobacillus with sludge can be increased
Rate improves its ability for absorbing heavy metal in sludge, after pressure increases to 700kPa in the first tank body 10, first pressure sensing
After component 17 detects the pressure peak threshold value, touches Blast mechanism 4 and stop ventilating into the first tank body 10, and start simultaneously
First relief valve 18, above-mentioned first relief valve 18 control the exhaust of the first tank body 10, by the pressure inside the first tank body 10 by
700kPa is reduced to atmospheric pressure, the top of first tank body 10 to generate a large amount of microbubble because of exhaust, the gas in Interstitial Water
Cognition disengages and takes the product after heavy metal and reaction out of sludge hole.Since the hole of sludge is too small, gas when decompression
The rate disengaged causes sludge pore interior pressure to increase commonly greater than the rate that gas is discharged from hole.Work as sludge
When pore interior pressure is more than the pressure that mud granule wall can bear, mud granule will be caused to implode or burst, made
The exposed amount of heavy metal increases in sludge, greatlys improve the gas-solid contact effect of heavy metal and thiobacillus thiooxidant, enhances its life
Change reaction, the removal effect of Heavy Metals in Sludge is greatly improved, when the pressure recovery in the first tank body 10 to general atmosphere
When pressure, after first pressure sensory package 17 detects the pressure minimum point threshold value, Blast mechanism 4 is touched again to the first tank body
Ventilation in 10, and the first relief valve 18 is simultaneously closed off, it is dropped again after again promoting 10 internal pressure of the first tank body to 700kPa
It is depressed into atmospheric pressure, constantly completes the cycle of supercharging and decompression, until sludge completes the removal of heavy metal.
9, in the present invention, by the way that second pressure sensory package 27 and the second relief valve 28 is arranged, and coordinate air blower
The ventilation of structure 4 acts on, and can form another pressures cycle processing system, when the ventilation of 20 internal cause of the second tank body causes air pressure to increase
Afterwards, the infiltration of Interstitial Water and three kinds of conditioning material to sludge internal void can be increased, reinforce contact of three kinds of conditioning material with sludge
Frequency improves the effect of its opsonic reaction, after pressure increases to 700kPa in the second tank body 20, second pressure sensory package 27
It after detecting the pressure peak threshold value, touches Blast mechanism 4 and stops ventilating into the second tank body 20, and start second simultaneously and let out
Pressure valve 28, above-mentioned second relief valve 28 control the exhaust of the second tank body 20, the pressure inside the second tank body 20 are reduced by 700kPa
To atmospheric pressure, the top of second tank body 20 generates a large amount of microbubble because of exhaust, and the gas in Interstitial Water can disengage simultaneously
Take the product after opsonic reaction out of sludge hole.Since the hole of sludge is too small, the rate that gas disengages when decompression is often
More than the rate that gas is discharged from hole, therefore sludge pore interior pressure is caused to increase.When sludge pore interior pressure is big
When the pressure that mud granule wall can bear, mud granule will be caused to implode or burst, make polyelectrolyte in sludge
Increase with the exposed amount of organic matter, greatlys improve the gas-solid contact effect of itself and three kinds of conditioning material, enhance its physics and chemistry
Reaction helps to improve sludge dewatering effect, when in the first tank body 10 so as to reduce the yield stress and appearance viscosity of sludge
Pressure recovery to general atmosphere pressure when, after first pressure sensory package 17 detects the pressure minimum point threshold value, touch drum
Wind mechanism 4 is ventilated into the first tank body 10 again, and simultaneously closes off the first relief valve 18, again by 10 internal pressure of the first tank body
It is depressurized to atmospheric pressure again after promoting 700kPa, constantly the cycle of completion supercharging and decompression, until sludge completes whole take off
Water improves.
The specific implementation mode of the present invention is above are only, but the design concept of the present invention is not limited thereto, it is all to utilize this
Conceive the change for carrying out unsubstantiality to the present invention, the behavior for invading the scope of the present invention should all be belonged to.
Claims (6)
1. a kind of method for sludge treatment improving dehydration efficiency, which is characterized in that include the following steps：A, at heavy metal biochemistry
Reason；B, sludge dewatering improves；C, sludge dewatering is dried；The sludge dewatering is dried, when in use, water-containing sludge mixed liquor
Body is drawn into upper tank body, later closes mud inlet, is started pressue device and vacuum extractor, is made upper tank by pressue device
Internal pressure enhancing, by vacuum tank so that pressure reduction in lower tank is to vacuum state, such upper tank body and lower tank
Between form larger pressure difference, the water in water-containing sludge mixing liquid in upper tank body can run through filter layer,
And sludge then stays in the top of filter layer, and since pressure difference can be formed between upper tank body and lower tank, ensure quickly into
Row is separated by solid-liquid separation, and after separation of solid and liquid finishes, is started microwave launcher and is discharged microwave, microwave is made with the hydrone in sludge
With and be heated so that the moisture contained by sludge can be spread and the effect of evaporate into air, reach dry sludge, the step
In a, the heavy metal biochemical treatment includes, and pending sludge input one is contained with to the of the culture solution of oxidation-containing sulfur bacillus
In one tank body, wherein first tank base is equipped with the first blow vent, and inside is inserted with the first drainage hood, passes through the first blow vent
It is aerated into the first tank body, air-flow is flowed from the first under shed of the first drainage hood into the first drainage hood, in the first drainage hood
Interior to form irregular vortex and negative pressure, sludge, thiobacillus thiooxidant and culture solution be inhaled into from the bottom of drainage hood, is promoted to the
It is sufficiently mixed in one drainage hood, and is flowed out and settled by opening on the first of the first drainage hood under the action of air-flow and flow back into the
In one tank body, sludge, thiobacillus thiooxidant and culture solution in the first tank body are flowed back into again by airflow function from the first drainage hood
Bottom be inhaled into, promoted into the first drainage hood, to the iterative cycles between the first tank body and the first drainage hood so that dirty
The heavy metal and thiobacillus thiooxidant of mud obtain sufficient gas-solid contact effect so that oxidation and acid of the heavy metal by thiobacillus thiooxidant
Change effect is dissolved out from sludge, the content of heavy metal in elimination sludge, and in the step a, the heavy metal biochemical treatment is also wrapped
It includes, after the ventilation of the first tank body internal cause causes air pressure to increase, Interstitial Water and thiobacillus thiooxidant can be increased to sludge internal void
Infiltration, the contact frequency of oxidation reinforced Thiobacillus and sludge, improve its absorb sludge in heavy metal ability, when the first tank body
After interior pressure increases to 700kPa, after first pressure sensory package detects the pressure peak threshold value, touches and stop to first
Ventilation in tank body, and start the first relief valve simultaneously, above-mentioned first relief valve controls the exhaust of the first tank body, by the first tank interior
Pressure be reduced to atmospheric pressure, the top of first tank body to generate a large amount of microbubble, Interstitial Water because of exhaust by 700kPa
In gas can disengage and take the product after heavy metal and reaction out of sludge hole, since the hole of sludge is too small, decompression
When the rate disengaged of gas commonly greater than the rate that gas is discharged from hole, therefore sludge pore interior pressure is caused to increase,
When sludge pore interior pressure is more than the pressure that mud granule wall can bear, mud granule will be caused to implode or fry
It splits, the exposed amount of heavy metal in sludge is made to increase, greatly improve the gas-solid contact effect of heavy metal and thiobacillus thiooxidant, enhance
Its biochemical reaction greatly improves the removal effect of Heavy Metals in Sludge, when the pressure recovery in the first tank body is to general big
When atmospheric pressure, after first pressure sensory package detects the pressure minimum point threshold value, shake-up is ventilated into the first tank body again, and
The first relief valve is simultaneously closed off, atmospheric pressure will be depressurized to again after the first tank interior boost in pressure to 700kPa again, constantly
The cycle for completing supercharging and decompression, until sludge completes the removal of heavy metal.
2. a kind of method for sludge treatment improving dehydration efficiency as described in claim 1, it is characterised in that：In the step c, institute
It further includes permeating the moisture to get off from filter layer mainly to drain into sewage ponding by the first discharge outlet to state sludge dewatering drying
Pond, and the vapor in lower tank can enter vacuum tank by connecting tube and wastewater influent pond is drained into from the second discharge outlet,
To ensure that moisture can fully be discharged.
3. a kind of method for sludge treatment improving dehydration efficiency as described in claim 1, it is characterised in that：In the step c, institute
It further includes making microwave repeat reflection in microwave heating equipment using metallic shield technology, avoiding to state sludge dewatering drying
The microwave generated in drying process leaks, and then sludge can be made to be heated properly drying, improves the drying effect of sludge.
4. a kind of method for sludge treatment improving dehydration efficiency as described in claim 1, it is characterised in that：In the step c, institute
It further includes that in carrying out microwave heating process, vacuum tank can act on simultaneously to state sludge dewatering drying, causes shape inside lower tank
At a negative pressure, to generate an air-flow, the water vapour of heating process generation is taken away, is entered after the mesh using metallic shield net
Vacuum tank simultaneously drains into wastewater influent pond from the second discharge outlet.
5. a kind of method for sludge treatment improving dehydration efficiency as described in claim 1, it is characterised in that：In the step b, institute
It includes successively sequentially adding the process of three kinds of conditioning material to state sludge dewatering conditioning, and the conditioning material being added for the first time is thermal power generation
Factory's ash flies, and second of conditioning material being added is ferric chloride solution or cationic polyelectrolytes, the conditioning material that last time is added
For polymethacrylates system both sexes co-polymer, the sludge dewatering conditioning further includes, in use, working as sludge raw material and three kinds
Conditioning material is fully immersed in the second tank body, by pressurization, improves the pressure of second tank interior, when the second tank body internal cause is ventilated
After causing air pressure to increase, the infiltration of Interstitial Water and three kinds of conditioning material to sludge internal void can be increased, reinforce three kinds of conditioning material
With the contact frequency of sludge, the effect of its opsonic reaction is improved, after pressure increases to 700kPa in the second tank body, second pressure
After sensory package detects the pressure peak threshold value, touches and stop ventilating into the second tank body, and start the second pressure release simultaneously
Valve, above-mentioned second relief valve control the exhaust of the second tank body, the pressure of the second tank interior are reduced to atmospheric pressure by 700kPa, institute
The top for stating the second tank body generates a large amount of microbubble because of exhaust, and the gas in Interstitial Water can disengage and will be after opsonic reaction
Product takes sludge hole out of, and since the hole of sludge is too small, gas disengages when decompression rate is commonly greater than gas from hole
The rate of middle discharge, therefore sludge pore interior pressure is caused to increase, when sludge pore interior pressure is more than mud granule wall institute
When the pressure that can be born, mud granule will be caused to implode or burst, make the exposure of polyelectrolyte and organic matter in sludge
Amount increases, and greatlys improve the gas-solid contact effect of itself and three kinds of conditioning material, enhances its physical and chemical reaction, so as to reduce
The yield stress of sludge and appearance viscosity, help to improve sludge dewatering effect, when the pressure recovery in the first tank body is to generally
When atmospheric pressure, after first pressure sensory package detects the pressure minimum point threshold value, shake-up is ventilated into the first tank body again,
And the first relief valve is simultaneously closed off, it will be depressurized to atmospheric pressure again after the first tank interior boost in pressure to 700kPa again, no
The disconnected cycle for completing supercharging and decompression, until sludge completes whole dehydrating and conditioning.
6. a kind of method for sludge treatment improving dehydration efficiency as claimed in claim 5, it is characterised in that：In the step b, institute
Stating sludge dewatering conditioning further includes, and sludge raw material and three kinds of conditioning material enter second by second charging aperture and the second feeding port respectively
In tank body, and the forced air generated by Blast mechanism generates bubble by the bottom of the second tank body, and by the second drainage
Second under shed of cover injects in the second drainage channel, and is flowed out under the action of air-flow by being open on the second of the second drainage hood
And settle and flow back into the second tank body, flow back into sludge raw material in the second groove body and three kinds of conditioning material again by airflow function from
Second under shed of the second drainage hood is inhaled into, is promoted into the second drainage hood, to the second tank body and the second drainage hood it
Between iterative cycles so that sludge raw material and three kinds of conditioning material obtain sufficient gas-solid contact effects, so as to reduce the drop of sludge
Stress and appearance viscosity are lied prostrate, sludge dewatering effect is helped to improve.
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| CN106938882A (en) * | 2017-03-20 | 2017-07-11 | 浙江建投环保工程有限公司 | Sludge vacuum drying device |
| CN108020473A (en) * | 2018-01-03 | 2018-05-11 | 中国电建集团华东勘测设计研究院有限公司 | Consider the Rock And Soil cutting creep instrument and its test method of drying and watering cycle |
| CN109020139B (en) * | 2018-07-19 | 2021-07-09 | 广州福之源环保科技有限公司 | Municipal sludge reduction method |
| CN113683283A (en) * | 2021-08-30 | 2021-11-23 | 扬州大学 | Full-automatic small sludge dewatering dryer and dewatering method thereof |
| CN116282801B (en) * | 2023-02-28 | 2024-02-02 | 湖北国新天汇能源有限公司 | High-temperature thermal hydrolysis treatment system and method for sludge treatment |
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