CN104692583A - An ABS waste water treatment method - Google Patents
An ABS waste water treatment method Download PDFInfo
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- CN104692583A CN104692583A CN201310656630.XA CN201310656630A CN104692583A CN 104692583 A CN104692583 A CN 104692583A CN 201310656630 A CN201310656630 A CN 201310656630A CN 104692583 A CN104692583 A CN 104692583A
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Abstract
The invention relates to the field of waste water treatment, particularly relates to a technique for ABS high-difficulty chemical waste water, and more particularly relates to an ABS waste water treatment method. ABS production waste water is treated by adopting a combined process combining coagulating sedimentation, a parallel-serial biologically intensified treatment system and a dynamic membrane bioreactor in the technique. A conventional coagulant is added into a coagulating sedimentation tank to mainly remove suspended solids, colloid particles and phosphorus in fed water. The parallel-serial biologically intensified treatment system relates to improvements on a traditional A2O process, wherein an aerobiotic tank and an anaerobic tank are connected in parallel, and then is connected to an anoxic tank in series, the aerobiotic tank is provided with an independent sludge reflux system, and the anaerobic tank and the anoxic tank share another denitrifying phosphorus removal sludge reflux system. The dynamic membrane bioreactor adopts a cheap porous medium as a supporting filtering substrate. Powder activated carbon and activated sludge are added into the bioreactor. A filter cake layer is formed by suction filtration so as to achieve deep treatment of the waste water. The method is novel in technique, and has advantages of simple process steps, high treatment efficiency and low operation costs.
Description
Technical field
The present invention relates to field of sewage treatment, particularly physico-chemical process and the highly difficult wastewater from chemical industry method of biological process combination treatment ABS.
Background technology
Containing materials such as vinyl cyanide, divinyl, vinylbenzene and various additives in ABS factory effluent, there is the features such as COD is high, toxicity is large, nitrogen and phosphorus content is high, biodegradability is poor, belong to the organic petrochemical wastewater of difficult degradation.The ABS factory effluent chemical treatment method reported at present has Fenton oxidation method, photocatalytic method, Ozonation, flocculent precipitation, electrolytic process; Physical method has active carbon adsorption, By Bubble-floating Method etc.; Bioremediation has: A/O, the techniques such as multistage A/O, BAF.Single treatment technology is difficult to realize the ABS factory effluent process up to standard to complexity, generally adopts physics, chemistry and biochemical process combination process to process.But existing combination process exists, and technique is miscellaneous, technical process is long, excessively add the problems such as the environmental pollution that chemical agent brings, and need research and develop new and effective treatment process and carry out Technology innovation.
In addition, the emphasis of process all focuses on the organism in waste water and suspended substance removal by existing research report and engineering practice, and ignores relatively high concentration N, phosphorus ligands in waste water.Along with the pay attention to day by day of Environmental protection, integrated wastewater discharge standard requires increasingly stringent, and existing treatment process cannot meet the processing requirements to high standard nitrogen, phosphorus, therefore needs research and development new technology to improve system to the processing efficiency of nitrogen phosphorus.
Summary of the invention
The object of the present invention is to provide a technology novelty, technical process is simple, and processing efficiency is high, the ABS wastewater treatment integrated technology that combining efficient denitrogenation dephosphorizing function, running cost are low.
The present invention will solve the technical scheme that its technical problem adopts:
ABS factory effluent is through coagulating sedimentation pre-treatment, remove the material such as most suspended substance and partial organic substances, colloidal solid, phosphorus, then parallel-series bio-augmentation treatment system (PSB) is entered, this biochemical system is the home court institute of organic matter removal, and there is high efficiency synchronous denitrogenation dephosphorizing function, the rear water outlet of process enters bioreactor of dynamic membrane and carries out degree of depth organics removal, phosphorus etc., thus reaches purification water outlet.
Described parallel-series bio-augmentation treatment system (PSB) is that Aerobic Pond is in parallel with anaerobic pond, and then connect with anoxic pond, Aerobic Pond arranges independently sludge recirculation system, and anaerobic pond and anoxic pond share another denitrification dephosphorization sludge recirculation system.This biochemical system has efficient organics removal, synchronous denitrification dephosphorizing ability.Aerobic Pond inoculation has ABS efficient degrading bacteria, and anoxic pond inoculation has denitrifying phosphorus removing bacteria; Aerobic sludge reflux ratio is 30 ~ 40%, and denitrification dephosphorization return sludge ratio is 50 ~ 60%; Aerobic Pond volume: anaerobic pond volume: anoxic pond volume is 2:1:1; Aerobic Pond DO concentration is 2 ~ 4mg/L, and anaerobic pond and anoxic pond all do not arrange aerating system.
Described bioreactor of dynamic membrane adopts cheap porous medium filter cloth as support membrane, and add powder activated carbon and active sludge, forms cake layer realize retaining the removal of removing and to chroma in waste water to pollution substance by suction filtration.Dynamic Membrane pore diameter range is 10 ~ 30um, and filtering substrate is (nylon wire, non-textile fiber, screen cloth, Stainless Steel Cloth, dull and stereotyped coarse net, ceramic membrane, filter cloth etc.), and membrane flux is 20 ~ 200L/m
2.h; Cross-flow micro-pore aeration mode is adopted in reactor; Adding matrix is active sludge and Powdered Activated Carbon, and the mixed genetic-neural network of formation is 4000mg/L.
Advantage of the present invention and positively effect are:
1. by research and development novel parallel-series bio-augmentation treatment system be to traditional A
2o technique is improved, according to each reaction tank body flexible function arrangement technology system architecture, and consolidation system synchronous denitrification dephosphorizing function, and independently sludge recirculation system is set is conducive to keeping respective dominant bacteria, improve system stability and high efficiency.
2. by researching and developing novel bioreactor of dynamic membrane, adopt cheap porous medium as the hollow-fibre membrane in the traditional MBR of the replacement such as ceramic membrane, filter cloth and flat sheet membrane, the cake layer formed by medium realizes filtering to the crown_interception of pollution substance, filtration resistance is little, greatly reduces energy consumption.
3. the present invention is by each processing unit reasonable combination, forms integrated combination process, and have flow process simple, processing efficiency is high, the advantage that energy consumption is low, opens ABS waste water treatment new technology.
Accompanying drawing explanation
Fig. 1 is ABS sewage treatment technology process figure of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is further described; Following embodiment is illustrative, is not determinate, can not limit protection scope of the present invention with following embodiment.
Case study on implementation 1: process waste water takes from Dagu, Tianjin chemical inc, produce the composite waste of 400,000 tons of ABS resin device workshops discharges year, water quality is COD:2000 ~ 3000mg/L, SS:600 ~ 800mg/L, ammonia nitrogen: 20 ~ 40mg/L, TP:20 ~ 30mg/L.Adopt integrated technology of the present invention " coagulating sedimentation+parallel-series bio-augmentation treatment system+bioreactor of dynamic membrane " as the technical process of this project treatment.
(1) coagulation-settlement process: select conventional chemical coagulating agent PAC as treatment agent, adopts dosing pump to be quantitatively added in waste water and carries out mechanical stirring, then flow to settling tank and carry out mud-water separation.This unit mainly carries out removing the material such as most suspended substance and partial organic substances, colloidal solid, phosphorus.
(2) parallel-series bio-augmentation treatment system (PSB) technique: coagulating sedimentation water outlet enters parallel-series bio-augmentation treatment system (PSB), PSB biochemical system adopts high-efficiency aerobic pond in parallel with anaerobic phosphorus releasing pool, water outlet imports anoxic denitrification dephosphorization pond, wherein high-efficiency aerobic pond has added ABS waste water high-efficiency degradation bacteria, anaerobic phosphorus releasing pool has added Denitrifying Phosphate Accumulating Organisms, the rear water outlet of process enters Dynamic Membrane reactor and carries out degree of depth organics removal, phosphorus etc., thus reaches purification water outlet.
(3) bioreactor of dynamic membrane technique: after biochemical system process, water outlet enters Dynamic Membrane reactor and carries out degree of depth organics removal, phosphorus etc., thus reaches purification water outlet.By being also the water inlet that the high, normal, basic liquid level of controller realizes controlling reactor in this reactor, utilizing peristaltic pump to carry out suction water outlet, adopting the mode of cross-flow micro-pore aeration to carry out continuous aeration.
This technology controlling and process processing parameter is: coagulating agent PAC dosage is 300ppm; Aerobic sludge reflux ratio is 35%, and denitrification dephosphorization return sludge ratio is 50%, and Aerobic Pond DO concentration is 3.5mg/L, and bioreactor of dynamic membrane filtering substrate is the terylene short fiber filter cloth of 24um, and membrane flux is 60L/m
2.h; The mixed genetic-neural network that active sludge and Powdered Activated Carbon are formed is 4000mg/L.This construction waste water administers rear effluent quality: COD<60mg/L, SS<20mg/L, ammonia nitrogen <8mg/L, TP<1mg/L, water outlet meets Tianjin " integrated wastewater discharge standard " DB12/356-2002 secondary standard.
Claims (7)
1. an ABS method of wastewater treatment, it comprises coagulating sedimentation, biochemical system, and bioreactor of dynamic membrane three part forms.Be specially: ABS factory effluent is through coagulating sedimentation pre-treatment, remove the material such as most suspended substance and partial organic substances, colloidal solid, phosphorus, then parallel-series bio-augmentation treatment system (PSB) is entered, this biochemical system is the home court institute of organic matter removal, and there is high efficiency synchronous denitrogenation dephosphorizing function, the rear water outlet of process enters bioreactor of dynamic membrane and carries out degree of depth organics removal, nitrogen, phosphorus etc., thus reaches purification water outlet.
Described parallel-series bio-augmentation treatment system (PSB) is that Aerobic Pond is in parallel with anaerobic pond, and then connect with anoxic pond, Aerobic Pond arranges independently sludge recirculation system, and anaerobic pond and anoxic pond share another denitrification dephosphorization sludge recirculation system.This biochemical system has efficient organics removal, synchronous denitrification dephosphorizing ability.
Described bioreactor of dynamic membrane adopts cheap porous medium as support filtering substrate, and add powder activated carbon and active sludge, form cake layer by suction filtration and realize retaining the removal of removing and to chroma in waste water to the absorption of pollution substance.
2. parallel-series bio-augmentation treatment system (PSB) according to claim 1, it is characterized in that Aerobic Pond inoculation has ABS efficient degrading bacteria, anoxic pond inoculation has denitrifying phosphorus removing bacteria.
3. the parallel-series bio-augmentation treatment system (PSB) according to right 1 ~ 2, it is characterized in that aerobic sludge reflux ratio is 30 ~ 40%, denitrification dephosphorization return sludge ratio is 50 ~ 60%.
4. the parallel-series bio-augmentation treatment system (PSB) according to right 1 ~ 3, is characterized in that Aerobic Pond volume: anaerobic pond volume: anoxic pond volume is 2:1:1.
5. the parallel-series bio-augmentation treatment system (PSB) described in right 1 ~ 4, it is characterized in that Aerobic Pond DO concentration is 2 ~ 4mg/L, anaerobic pond and anoxic pond all do not arrange aerating system.
6. in the bioreactor of dynamic membrane according to right 1, Dynamic Membrane pore diameter range is 10 ~ 30um, and filtering substrate is (nylon wire, non-textile fiber, screen cloth, Stainless Steel Cloth, dull and stereotyped coarse net, ceramic membrane, filter cloth etc.), and membrane flux is 20 ~ 200L/m
2.h; Cross-flow micro-pore aeration mode is adopted in reactor.
7. the matrix that adds described in the bioreactor of dynamic membrane according to right 1 and 6 is active sludge and Powdered Activated Carbon, and the mixed genetic-neural network of formation is 4000mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310656630.XA CN104692583A (en) | 2013-12-06 | 2013-12-06 | An ABS waste water treatment method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310656630.XA CN104692583A (en) | 2013-12-06 | 2013-12-06 | An ABS waste water treatment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277567A (en) * | 2016-08-08 | 2017-01-04 | 无锡合思环境技术有限公司 | A kind of high efficiency sewage disposal device |
| CN106946407A (en) * | 2017-03-31 | 2017-07-14 | 大唐国际化工技术研究院有限公司 | A kind of process for reclaiming of crushed coal pressure gasifying wastewater biochemical water outlet |
-
2013
- 2013-12-06 CN CN201310656630.XA patent/CN104692583A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277567A (en) * | 2016-08-08 | 2017-01-04 | 无锡合思环境技术有限公司 | A kind of high efficiency sewage disposal device |
| CN106946407A (en) * | 2017-03-31 | 2017-07-14 | 大唐国际化工技术研究院有限公司 | A kind of process for reclaiming of crushed coal pressure gasifying wastewater biochemical water outlet |
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Application publication date: 20150610 |