CN101492227A - Method for recycling biological sludge to treat suspended matter organic waste water - Google Patents
Method for recycling biological sludge to treat suspended matter organic waste water Download PDFInfo
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- CN101492227A CN101492227A CNA2009100257325A CN200910025732A CN101492227A CN 101492227 A CN101492227 A CN 101492227A CN A2009100257325 A CNA2009100257325 A CN A2009100257325A CN 200910025732 A CN200910025732 A CN 200910025732A CN 101492227 A CN101492227 A CN 101492227A
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Abstract
The invention discloses a method for treating suspended substance organic wastewater by recycling biological sludge, which comprises the following: step one, physical pretreatment is performed, wherein chemical mechanical pulp wastewater passes through a group of parallel metal grilles and then a nylon mesh screen, and finally enters a sedimentation tank; step two, hydrolytic acidification is performed, wherein the water after the treatment of the step one enters a hydrolytic pool provided with combined filler; step three, ABR and continuous SBR biological treatment is performed, wherein the wastewater after the treatment of the step two enters an ABR baffle plate anaerobic reactor, the wastewater performs baffling motions up and down along a baffle plate and then enters a continuous SBR aerobic reactor, and simultaneously the biological sludge generated in the continuous SBR aerobic reactor is conveyed to a wastewater inlet of the sedimentation tank in an intermittent or continuous mode; and step four, combined coagulation treatment is performed, wherein the wastewater after the treatment of the step three is mixed evenly with polyaluminium chloride and polyacrylamide, then passes through a clapboard mixing tank, forms eddy flows in a passage between clapboards and enters a reactive sedimentation tank, and the supernatant after sedimentation reaches the discharge standard and is discharged.
Description
Technical field
The present invention relates to a kind of treatment process of waste water, particularly relate to a kind of treatment process that is widely used in the high organic waste water of field ss suspended solid content such as papermaking, light industry, food, pharmacy.
Background technology
It is more that many trade effluents contain suspended substance, mainly is made up of bark, fiber, fibrous bundle, filler and coating as the paper-making effluent suspended substance.Take the precipitator method or air supporting method can remove most suspended substances in the trade effluent, the precipitator method are divided natural sedimentation method and coagulant sedimentation, and natural sedimentation method is to utilize the effect of gravitational settling that the suspended substance precipitation is removed, and throw out is called precipitating sludge.The suspended substance of coagulating sedimentation rule in flocculation agent and the coagulant aids coagulation water, coagulation effect is good, and flco is big and closely knit, and precipitation is fast, can remove most suspended substances in the waste water.It is reported that the first-selected settling process pre-treatment of the paper industry of Britain paper waste on average can be removed the suspended substance about 50%.To be the small bubbles that utilize high dispersing remove to adhere to suspended substance in the waste water as carrier to the air supporting method, makes its density float to the water surface on less than water and realize process of solid-liquid separation.Compare with the precipitator method, the air supporting method has advantages such as equipment takes up an area of less, body refuse is difficult for corruption, effluent quality is good, low, the required pharmaceutical quantities of scum silica frost water ratio is few.But air supporting method power consumption is big, and running cost is higher, influences the enthusiasm that enterprise uses.The paper-making industrial waste water generating capacity is big, and it is many to contain suspended substance, facts have proved to handle all uneconomically with coagulant sedimentation or air supporting method, and most papermaking enterprises preferentially adopt natural sedimentation method that waste water is carried out pre-treatment.
Because it is big to contain the organic industrial sewage pollution load of a large amount of suspended substances, use is difficult to make discharged wastewater met the national standard someway separately, needs two or more methods are joined together to handle waste water in actual production.After with the precipitator method waste water being carried out pre-treatment, employing two stage biological treatment technology is further removed COD and the BOD in the waste water.According to the pollution feature of trade effluent, further carry out a biological disposal upon through the aerobic or anaerobic-aerobic method of pretreated means of waste water reuse, make discharged wastewater met the national standard.Just the flow process of at present domestic and international paper-making effluent mainly is a precipitation-aerobic or precipitation-anaerobic-aerobic method, is called the secondary biochemical method for short.
The aerobic treatment process of waste water, it is bio aggregate---the active sludge that utilizes microbial population to form, through aeration aerating, and make it and the waste water thorough mixing, active sludge absorbs in the waste water can biochemical organic pollution materials (BOD and a part of COD), as the energy of vital movement, carry out metabolism, the organism in the waste water is converted into stable H
2O and CO
2Deng inorganic substance, waste water is purified.Meanwhile, microorganism itself utilizes the organism in the waste water to multiply propagation as food, and active sludge obtains increasing.Along with the carrying out of biochemical reaction, the quantity of active sludge is more and more in the aeration tank, and unnecessary active sludge needs in time to discharge from Waste Water Treatment, and the active sludge of discharge is referred to as biological sludge.Biological sludge mainly is made up of inorganic nature sediment, a small amount of undegradable organism and a large amount of free-waters that microbial aggregate (being the active sludge zoogloea), waste water are brought into, and water ratio is up to 99.5%～99.8%, and proportion only is 1.006g/cm
3～1.010g/cm
3Every day, the biological sludge of a papermaking enterprise wastewater treatment generation can reach hundreds of m
3, these biological sludges all are discharged into sludge thickener and concentrate, and concentrating after the conditioning of mud adding medicine again, mechanical dehydration becomes dried mud, dried mud outward transport landfill.
Processing contains biological sludge that precipitating sludge that the preliminary sedimentation tank of the organic industrial sewage of a large amount of suspended substances produces and biochemistry pool produce and all is discharged into sludge thickener and concentrates, and press filtration becomes dried mud outward transport landfill then.People attempt the paper waste biological sludge is used for farmland and forest land, generating, pyrolysis oil preparation, produces gac, sorbent material or material of construction etc., but still do not have suitable industrial application so far.
Summary of the invention
In order to overcome the shortcoming that biological sludge that prior art exists can't well utilize, the invention provides a kind of method of recycling biological sludge to treat suspended matter organic waste water, utilize the large number of biological mud that produces in the biological wastewater treatment process, be back to use in the pre-treatment settling tank, to reach utilization of waste material, to reduce the processing cost purpose.
Technical scheme of the present invention is: a kind of method of recycling biological sludge to treat suspended matter organic waste water, and step is:
The first step, the physics pre-treatment: the chemical machinery pulp waste water is through one group of parallel metal grating, and flow velocity is 9～18m/min, waste water passes through the nylon mesh screen with the flow velocity of 0.07～0.14m/min then, enter settling tank, flow velocity is reduced to 1.8～3.5m/h, and the residence time in settling tank is 5～10h; The gap of described metal barrier is 16～25mm, and described nylon mesh screen is 60～100 orders.
In second step, acidication is handled: the water that the process the first step is handled enters the hydrolytic tank that is provided with combined stuffing with the flow velocity of 1.8～3.5m/h, and the residence time is 4～8h in hydrolytic tank, and temperature is 5～40 ℃; Described combined stuffing is made up of compo ring plate, supporting sleeve, axial cord and soft fiber tow, axial cord is provided with supporting sleeve outward, supporting sleeve is provided with the compo ring plate outward, be the radial soft fiber tow that is provided with uniformly on the compo ring plate, described soft fiber tow is high polyvinyl hydroformylation long filament.
The 3rd step, the continuous SBR biological treatment of ABR-: the waste water after second step handled enters in the ABR traverse baffle anaerobic reactor, waste water along baffle up and down baffling move, waste water passes through the Sludge Bed of each lattice chamber successively with flow velocity 0.8～1.7m/h, the residence time of waste water in ABR traverse baffle anaerobic reactor is 14～28h, waste water enters continuous SBR aerobic reactor then, and the residence time of waste water is 9～18h in continuous SBR aerobic reactor, and the air demand of gas blower is 10～24m
3/ m
3Waste water; Simultaneously, with the biological sludge that produces in the continuous SBR aerobic reactor with intermittently or the successive mode, be transported to the waste water ingress of settling tank, be transported to the biological sludge amount of settling tank and the volume ratio Ratio of Sludge to Influent of wastewater flow rate, RSI is 0.05～0.12, the biological sludge bulk index SVI that described continuous SBR pond produces is at 30～150mL/g, sludge concentration 4～10g/L.Be back to use in the operational process of preliminary sedimentation tank at biological sludge, must control spoil disposal time of preliminary sedimentation tank well, biological sludge should not be in preliminary sedimentation tank overstand., biological sludge residence time higher when the preliminary sedimentation tank water temperature be when longer, and the easy anaerobically fermenting of the mixed soil at the bottom of the pond and floating influences effluent quality.If the SVI of aeration tank biological sludge surpasses 150mL/g, the settleability variation of biological sludge, this moment, biological sludge should not pass back into preliminary sedimentation tank.
Described continuous SBR aerobic reactor is a rectangle reaction tank that is connected into by three unit cells, hydraulic communication between three unit cells, each unit cells is provided with aerating apparatus, aerating apparatus is by the gas blower air feed, by the micro porous aeration head release air, two unit cells in the outside are provided with effluent weir and excess sludge discharge mouth.
The 4th step, combination coagulating treatment: mix through the 3rd waste water handled of step and polymerize aluminum chloride and polyacrylamide,, form eddy current in the passage of waste water between dividing plate then through the iris type tempering tank, enter reaction settling basin then, the supernatant liquor qualified discharge of post precipitation;
In the entire treatment process just heavy in settling tank, hydrolytic tank, the biological sludge that produces in SBR aerobic reactor, the coagulation process continuously finally all be to focus on to concentrate press filtration in the concentration basin and become dried mud to handle again.
Beneficial effect:
1. continuously SBR handles the mud that high suspended matter organic waste water produces, in conjunction with tight, have the cotton-shaped sludge bacteria micelle of suede, colloidal solid is electronegative, good hydrophilic property.Sludge bacteria micelle specific surface area is big, and its particle size dispersion wide ranges comprises that particle diameter is less than the ultra-fine grain of 0.1 μ m, the colloidal solid of 1.0～100 μ m.Adsorptivity is good, has highly active biological floculation, so the spoil disposal in SBR pond can be brought into play good throwing out in settling tank.
2. the charging property of biological sludge, coacervation and huge specific surface area, can and waste water in suspended substance good coagulation takes place, most suspended substances precipitated and separate.The precipitating action of biological sludge has been strengthened the precipitation function of preliminary sedimentation tank, and the clearance of processed waste water SS and COD is obviously improved, and precipitated outlet water SS and COD value reduce.The engineering operation data show, obviously reduce before the SS of preliminary sedimentation tank water outlet and the reuse of COD biological sludge, have alleviated follow-up two stage biological and have handled organic lifting capacity, save aeration rate, reduce the expense of wastewater treatment.
Description of drawings
Fig. 1 is the sewage treatment technology process synoptic diagram.
Fig. 2 is to the influence of settling tank treatment effect after the biological sludge reuse.
Fig. 3 is the sludge index in SBR pond.
Embodiment
Below in conjunction with two case histories and Fig. 1～3, the present invention is further elaborated.
Embodiment 1:
Certain paper industry company chemimechanical pulp waste water treatment engineering flow process as shown in Figure 1.Enter the waste water 4800m of settling tank every day
3, pass through hydrolysis, ABR anaerobic reaction, SBR aerobic reaction and coagulation again, final qualified discharge.
The active bio mud in SBR aerobic reaction pond has good settleability, sees Fig. 2.SBR Chi Fendong, in, Xi3Chi, eastern pond SVI 71～117mL/g, middle pond SVI 56～146mL/g, western pond SVI 55～120mL/g, the total variation range of SVI is 55～146mL/g, SBR pond mud has good settleability.
Carry the settling tank of SBR pond biological sludge in the just heavy step with sludge pump, utilize the kinetic energy and the waste water of water inlet that sufficient mixing effect takes place, rely on mud high-activity biological floculation, be adsorbed with the suspended substance in the organic waste water, to improve effects of pretreatment.By reuse mud SVI 55～146mL/g, sludge concentration 5～8g/L, the ratio RSI of sludge quantity and wastewater flow rate is 0.05～0.08.
The relatively variation of settling tank treatment effect before and after the biological sludge reuse.See Fig. 3, a wherein top curve representation be the effect that 4 weeks of the 1st week to the does not have reuse mud.From 4 weeks of the 1st week to the, mud is not back to use preliminary sedimentation tank, and mud directly is extracted into sludge thickener, and waste water is after settling tank is handled, and the average removal rate of SS is 51.4%, and the average removal rate of COD is 37.1%.From 12 weeks of the 5th week to the, the spoil disposal in SBR pond is back to use settling tank, from the treatment effect in continuous 8 weeks, the average removal rate of waste water SS is 58.4%, the average removal rate of COD is 43.6%.Contrast shows that after the mud reuse, the clearance of waste water SS has improved 7 percentage points, and the clearance of COD has improved 6.5 percentage points.Strengthened the precipitation function of preliminary sedimentation tank, precipitated outlet water SS and COD value obviously reduce, and have alleviated follow-up two stage biological and have handled organic lifting capacity, have saved aeration rate, have reduced the expense of wastewater treatment.
Spoil disposal in the SBR pond is back to use in the operational process of preliminary sedimentation tank, must control spoil disposal time of preliminary sedimentation tank well, the mud of reuse should not be in preliminary sedimentation tank overstand.Because preliminary sedimentation tank waste water water temperature is higher, when excess sludge was longer in the preliminary sedimentation tank residence time, the easy anaerobically fermenting of the mixed soil at the bottom of the pond and floating influenced effluent quality.If the mud SVI of reuse surpasses 150mL/g, the settleability variation of mud, this moment must strict control RSI.
Embodiment 2:
Certain brew-house factory effluent aeration tank produces biological sludge 500m every day
3, former cause sludge pump directly is extracted into the sludge thickener concentration.Now by pipeline modification, the aeration tank biological sludge is back to use preliminary sedimentation tank and enters the 10000m of preliminary sedimentation tank
3The cohesion of/d beer production waste water thorough mixing.Through the post precipitation of about 1.5h, the mixed soil at the bottom of the settling tank is evacuated to sludge thickener by sludge pump.Biological sludge is back to use preliminary sedimentation tank, and the mixed soil water ratio at the bottom of the settling tank drops to 98.0% from 98.9%, and the mud solid content rises to 20g/L from 11g/L, and mass dryness fraction has improved 1.8 times.5 months average sludge volume of concentration basin is 472m before the biological sludge reuse
3/ d, 7 months average sludge volume of concentration basin is 234m after the biological sludge reuse
3/ d, every day, concentration basin spoil disposal volume reduced 50%.Before the biological sludge reuse, 5 monthly average values of preliminary sedimentation tank water outlet SS are 164mg/L, and 7 monthly average values of preliminary sedimentation tank water outlet SS are 92mg/L after the biological sludge reuse, and preliminary sedimentation tank improves 43.9% to waste water SS purification rate.Pipeline modification preceding 5 the beginning of the month sinking pool effluent COD mean value be 348mg/L, transform back 7 the beginning of the month sinking pool effluent COD mean value be 234mg/L, preliminary sedimentation tank improves 32.7% to the waste water COD purification rate, behind the pipeline modification, the preliminary sedimentation tank effluent quality has clear improvement.Preliminary sedimentation tank effluent quality pollution load reduces, and has alleviated the processing burden of Aerobic Pond, has saved aeration rate.Dwindling of the decline of preliminary sedimentation tank moisture percentage in sewage sludge and volume, the flocculation agent polyacrylamide dosage that sludge dewatering is used reduces, and the belt filter press on time reduces simultaneously.Transform the back and throw dilution polyacrylamide soup in advance at storage basin, pressurized air stirs, the supernatant liquor of the 50% thickened sludge volume of can draining again.As enter that sludge volume is 240m before the concentration basin
3/ d then enters the preceding sludge volume of pressure filter and has only 60m
3/ d, water ratio is about 92%, dosage is about 1/2 before transforming before the press filtration, the mud operational throughput reduces by 1/2 at least, like this pressure filter by every day class Three reduce to one class of operation.
Embodiment 3
A kind of method of recycling biological sludge to treat suspended matter organic waste water, step is:
The first step, the physics pre-treatment: the chemical machinery pulp waste water is through one group of parallel metal grating, and flow velocity is 9.5m/min, waste water passes through the nylon mesh screen with the flow velocity of 0.074m/min then, enter settling tank, flow velocity is reduced to 1.85m/h, and the residence time in settling tank is 6h; The gap of described metal barrier is 18mm, and described nylon mesh screen is 70 orders.
In second step, acidication is handled: the water that the process the first step is handled enters the hydrolytic tank that is provided with combined stuffing with the flow velocity of 1.85m/h, and the residence time is 4.5h in hydrolytic tank, and temperature is 6 ℃; Described combined stuffing is made up of compo ring plate, supporting sleeve, axial cord and soft fiber tow, axial cord is provided with supporting sleeve outward, supporting sleeve is provided with the compo ring plate outward, be the radial soft fiber tow that is provided with uniformly on the compo ring plate, described soft fiber tow is high polyvinyl hydroformylation long filament.
The 3rd step, the continuous SBR biological treatment of ABR-: the waste water after second step handled enters in the ABR traverse baffle anaerobic reactor, waste water along baffle up and down baffling move, waste water passes through the Sludge Bed of each lattice chamber successively with flow velocity 0.87m/h, the residence time of waste water in ABR traverse baffle anaerobic reactor is 15h, waste water enters continuous SBR aerobic reactor then, and the residence time of waste water is 10h in continuous SBR aerobic reactor, and the air demand of gas blower is 11m
3/ m
3Waste water; Simultaneously, with the biological sludge that produces in the continuous SBR aerobic reactor with intermittently or the successive mode, be transported to the waste water ingress of settling tank, be transported to the biological sludge amount of settling tank and the volume ratio Ratio of Sludge to Influent of wastewater flow rate, RSI is 0.06, the biological sludge bulk index SVI that described continuous SBR pond produces is at 35mL/g, sludge concentration 5g/L.
Described continuous SBR aerobic reactor is a rectangle reaction tank that is connected into by three unit cells, hydraulic communication between three unit cells, each unit cells is provided with aerating apparatus, aerating apparatus is by the gas blower air feed, by the micro porous aeration head release air, two unit cells in the outside are provided with effluent weir and excess sludge discharge mouth.
The 4th step, combination coagulating treatment: mix through the 3rd waste water handled of step and polymerize aluminum chloride and polyacrylamide,, form eddy current in the passage of waste water between dividing plate then through the iris type tempering tank, enter reaction settling basin then, the supernatant liquor qualified discharge of post precipitation;
In the entire treatment process just heavy in settling tank, hydrolytic tank, the biological sludge that produces in SBR aerobic reactor, the coagulation process continuously finally all be to focus on to concentrate press filtration in the concentration basin and become dried mud to handle again.
Embodiment 4
A kind of method of recycling biological sludge to treat suspended matter organic waste water, step is:
The first step, the physics pre-treatment: the chemical machinery pulp waste water is through one group of parallel metal grating, and flow velocity is 11m/min, waste water passes through the nylon mesh screen with the flow velocity of 0.11m/min then, enter settling tank, flow velocity is reduced to 2.3m/h, and the residence time in settling tank is 7.5h; The gap of described metal barrier is 20mm, and described nylon mesh screen is 80 orders.
In second step, acidication is handled: the water that the process the first step is handled enters the hydrolytic tank that is provided with combined stuffing with the flow velocity of 2.8m/h, and the residence time is 6h in hydrolytic tank, and temperature is 21 ℃; Described combined stuffing is made up of compo ring plate, supporting sleeve, axial cord and soft fiber tow, axial cord is provided with supporting sleeve outward, supporting sleeve is provided with the compo ring plate outward, be the radial soft fiber tow that is provided with uniformly on the compo ring plate, described soft fiber tow is high polyvinyl hydroformylation long filament.
The 3rd step, the continuous SBR biological treatment of ABR-: the waste water after second step handled enters in the ABR traverse baffle anaerobic reactor, waste water along baffle up and down baffling move, waste water passes through the Sludge Bed of each lattice chamber successively with flow velocity 1.1m/h, the residence time of waste water in ABR traverse baffle anaerobic reactor is 19h, waste water enters continuous SBR aerobic reactor then, and the residence time of waste water is 12h in continuous SBR aerobic reactor, and the air demand of gas blower is 17m
3/ m
3Waste water; Simultaneously, with the biological sludge that produces in the continuous SBR aerobic reactor with intermittently or the successive mode, be transported to the waste water ingress of settling tank, be transported to the biological sludge amount of settling tank and the volume ratio Ratio of Sludge to Influent of wastewater flow rate, RSI is 0.08, the biological sludge bulk index SVI that described continuous SBR pond produces is at 90mL/g, sludge concentration 7g/L.
Described continuous SBR aerobic reactor is a rectangle reaction tank that is connected into by three unit cells, hydraulic communication between three unit cells, each unit cells is provided with aerating apparatus, aerating apparatus is by the gas blower air feed, by the micro porous aeration head release air, two unit cells in the outside are provided with effluent weir and excess sludge discharge mouth.
The 4th step, combination coagulating treatment: mix through the 3rd waste water handled of step and polymerize aluminum chloride and polyacrylamide,, form eddy current in the passage of waste water between dividing plate then through the iris type tempering tank, enter reaction settling basin then, the supernatant liquor qualified discharge of post precipitation;
In the entire treatment process just heavy in settling tank, hydrolytic tank, the biological sludge that produces in SBR aerobic reactor, the coagulation process continuously finally all be to focus on to concentrate press filtration in the concentration basin and become dried mud to handle again.
Embodiment 5
A kind of method of recycling biological sludge to treat suspended matter organic waste water, step is:
The first step, the physics pre-treatment: the chemical machinery pulp waste water is through one group of parallel metal grating, and flow velocity is 17m/min, waste water passes through the nylon mesh screen with the flow velocity of 0.13m/min then, enter settling tank, flow velocity is reduced to 3.4m/h, and the residence time in settling tank is 9h; The gap of described metal barrier is 24mm, and described nylon mesh screen is 100 orders.
In second step, acidication is handled: the water that the process the first step is handled enters the hydrolytic tank that is provided with combined stuffing with the flow velocity of 3.4m/h, and the residence time is 8h in hydrolytic tank, and temperature is 40 ℃; Described combined stuffing is made up of compo ring plate, supporting sleeve, axial cord and soft fiber tow, axial cord is provided with supporting sleeve outward, supporting sleeve is provided with the compo ring plate outward, be the radial soft fiber tow that is provided with uniformly on the compo ring plate, described soft fiber tow is high polyvinyl hydroformylation long filament.
The 3rd step, the continuous SBR biological treatment of ABR-: the waste water after second step handled enters in the ABR traverse baffle anaerobic reactor, waste water along baffle up and down baffling move, waste water passes through the Sludge Bed of each lattice chamber successively with flow velocity 1.7m/h, the residence time of waste water in ABR traverse baffle anaerobic reactor is 28h, waste water enters continuous SBR aerobic reactor then, and the residence time of waste water is 18h in continuous SBR aerobic reactor, and the air demand of gas blower is 24m
3/ m
3Waste water; Simultaneously, with the biological sludge that produces in the continuous SBR aerobic reactor with intermittently or the successive mode, be transported to the waste water ingress of settling tank, be transported to the biological sludge amount of settling tank and the volume ratio Ratio of Sludge to Influent of wastewater flow rate, RSI is 0.12, the biological sludge bulk index SVI that described continuous SBR pond produces is at 150mL/g, sludge concentration 10g/L.
Described continuous SBR aerobic reactor is a rectangle reaction tank that is connected into by three unit cells, hydraulic communication between three unit cells, each unit cells is provided with aerating apparatus, aerating apparatus is by the gas blower air feed, by the micro porous aeration head release air, two unit cells in the outside are provided with effluent weir and excess sludge discharge mouth.
The 4th step, combination coagulating treatment: mix through the 3rd waste water handled of step and polymerize aluminum chloride and polyacrylamide,, form eddy current in the passage of waste water between dividing plate then through the iris type tempering tank, enter reaction settling basin then, the supernatant liquor qualified discharge of post precipitation;
In the entire treatment process just heavy in settling tank, hydrolytic tank, the biological sludge that produces in SBR aerobic reactor, the coagulation process continuously finally all be to focus on to concentrate press filtration in the concentration basin and become dried mud to handle again.
Claims (5)
1. the method for a recycling biological sludge to treat suspended matter organic waste water is characterized in that, step is:
The first step, the physics pre-treatment: the chemical machinery pulp waste water is through one group of parallel metal grating, and flow velocity is 9～18m/min, waste water passes through the nylon mesh screen with the flow velocity of 0.07～0.14m/min then, enter settling tank, flow velocity is reduced to 1.8～3.5m/h, and the residence time in settling tank is 5～10h;
In second step, acidication is handled: the water that the process the first step is handled enters the hydrolytic tank that is provided with combined stuffing with the flow velocity of 1.8～3.5m/h, and the residence time is 4～8h in hydrolytic tank, and temperature is 5～40 ℃;
The 3rd step, the continuous SBR biological treatment of ABR-: the waste water after second step handled enters in the ABR traverse baffle anaerobic reactor, waste water along baffle up and down baffling move, waste water passes through the Sludge Bed of each lattice chamber successively with flow velocity 0.8～1.7m/h, the residence time of waste water in ABR traverse baffle anaerobic reactor is 14～28h, waste water enters continuous SBR aerobic reactor then, and the residence time of waste water is 9～18h in continuous SBR aerobic reactor, and the air demand of gas blower is 10～24m
3/ m
3Waste water; Simultaneously, the biological sludge that produces in the continuous SBR aerobic reactor with intermittently or the successive mode, is transported to the waste water ingress of settling tank, being transported to the biological sludge amount of settling tank and the volume ratio of wastewater flow rate is 0.05～0.12: 1;
The 4th step, combination coagulating treatment: mix through the 3rd waste water handled of step and polymerize aluminum chloride and polyacrylamide,, form eddy current in the passage of waste water between dividing plate then through the iris type tempering tank, enter reaction settling basin then, the supernatant liquor qualified discharge of post precipitation.
2. the method for recycling biological sludge to treat suspended matter organic waste water according to claim 1 is characterized in that, the biological sludge bulk index that described continuous SBR pond produces is at 30～150mL/g, sludge concentration 4～10g/L.
3. the method for recycling biological sludge to treat suspended matter organic waste water according to claim 1 is characterized in that, the gap of described metal barrier is 16～25mm.
4. the method for recycling biological sludge to treat suspended matter organic waste water according to claim 1 is characterized in that, described nylon mesh screen is 60～100 orders.
5. the method for recycling biological sludge to treat suspended matter organic waste water according to claim 1, it is characterized in that, described continuous SBR aerobic reactor is a rectangle reaction tank that is connected into by three unit cells, hydraulic communication between three unit cells, each unit cells is provided with aerating apparatus, aerating apparatus is by the gas blower air feed, and by the micro porous aeration head release air, two unit cells in the outside are provided with effluent weir and excess sludge discharge mouth.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100257325A CN101492227A (en) | 2009-03-09 | 2009-03-09 | Method for recycling biological sludge to treat suspended matter organic waste water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100257325A CN101492227A (en) | 2009-03-09 | 2009-03-09 | Method for recycling biological sludge to treat suspended matter organic waste water |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103159384A (en) * | 2013-04-15 | 2013-06-19 | 安徽绿创环境工程有限公司 | Method for processing food industry wastewater with small sludge emission |
| CN105858875A (en) * | 2016-06-14 | 2016-08-17 | 轻工业环境保护研究所 | Cone-shaped aerobic reactor |
| CN110194571A (en) * | 2019-05-29 | 2019-09-03 | 邱振权 | Paper mill sludge preprocess method |
| CN111875187A (en) * | 2020-08-12 | 2020-11-03 | 湘潭建源生物技术开发有限公司 | Biological treatment method for wastewater from indomethacin production |
-
2009
- 2009-03-09 CN CNA2009100257325A patent/CN101492227A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103159384A (en) * | 2013-04-15 | 2013-06-19 | 安徽绿创环境工程有限公司 | Method for processing food industry wastewater with small sludge emission |
| CN105858875A (en) * | 2016-06-14 | 2016-08-17 | 轻工业环境保护研究所 | Cone-shaped aerobic reactor |
| CN105858875B (en) * | 2016-06-14 | 2018-07-27 | 轻工业环境保护研究所 | Taper aerobic reactor |
| CN110194571A (en) * | 2019-05-29 | 2019-09-03 | 邱振权 | Paper mill sludge preprocess method |
| CN111875187A (en) * | 2020-08-12 | 2020-11-03 | 湘潭建源生物技术开发有限公司 | Biological treatment method for wastewater from indomethacin production |
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