CN103588344A - Novel process for treating ABS wastewater - Google Patents
Novel process for treating ABS wastewater Download PDFInfo
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- CN103588344A CN103588344A CN201210285321.1A CN201210285321A CN103588344A CN 103588344 A CN103588344 A CN 103588344A CN 201210285321 A CN201210285321 A CN 201210285321A CN 103588344 A CN103588344 A CN 103588344A
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Abstract
The invention relates to the field of sewage treatment, and particularly relates to a technology for ABS high difficult chemical wastewater. According to the technology, a combined process of 'coagulating sedimentation + parallel-serial biological enhancement processing system + dynamic membrane bioreactor' is adopted to treat ABS production wastewater. A conventional coagulant is added into a coagulation sedimentation tank to mainly remove suspended matters, colloid particles and phosphor from intaken water. The parallel-serial biological enhancement processing system is developed from a conventional A2O process. In the system, an aerobic tank and an anaerobic tank are connected in parallel and then connected with an anoxic tank in series; the aerobic tank is provided with an independent sludge return-flow system; the anaerobic tank and the anoxic tank share another sludge return-flow system for denitrifying phosphorus removal. A cheap porous medium is employed as a support filter base material by the dynamic membrane bioreactor; both powder activated carbon and activated sludge are added in the reactor; and deep treatment of the wastewater is realized by forming a cake layer through suction filtration. The process is novel in technology and has the advantages of simple process flow, high processing efficiency and low operation cost.
Description
Technical field
The present invention relates to waste water control field, particularly the highly difficult wastewater from chemical industry technology of physico-chemical process and biological process combined governance ABS.
Background technology
In ABS factory effluent, contain the materials such as vinyl cyanide, divinyl, vinylbenzene and various additives, 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 of having 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 complicated ABS factory effluent processing up to standard, 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 environmental pollution that chemical agent brings, and needs the new and effective treatment process of research and development carry out Technology innovation.
In addition, existing research report and engineering practice all focus on the emphasis of processing on organism and suspended substance removal in waste water, and have ignored in waste water, relatively high concentration N, phosphorus are removed.Along with the pay attention to day by day of country to environment protection, integrated wastewater discharge standard requires increasingly stringent, and existing treatment process cannot meet the processing requirements to high standard nitrogen, phosphorus, therefore need to research and develop new technology and improve the processing efficiency of system to 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, has high-efficient denitrification and dephosphorization function, ABS wastewater treatment integrated technology that running cost is low concurrently.
The present invention will solve the technical scheme that its technical problem adopts:
ABS factory effluent is through coagulating sedimentation pre-treatment, remove the materials such as most suspended substance and partial organic substances, colloidal solid, phosphorus, then enter parallel-series bio-augmentation treatment system (PSB), 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 processing enters bioreactor of dynamic membrane and carries out degree of depth removal organism, phosphorus etc., thereby reaches purification water outlet.
Described parallel-series bio-augmentation treatment system (PSB) is that Aerobic Pond is in parallel with anaerobic pond, then connects with anoxic pond, and Aerobic Pond arranges independently sludge reflux system, and anaerobic pond and anoxic pond share another denitrification dephosphorization sludge reflux system.This biochemical system has efficient removal organism, 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 is to adopt cheap porous medium filter cloth as support membrane, and adds powder activated carbon and active sludge, forms cake layer realize pollution substance held back to removal and the removal to chroma in waste water 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; In reactor, adopt cross-flow micro-pore aeration mode; Adding matrix is active sludge and Powdered Activated Carbon, and the mixed liquor suspended solid, MLSS concentration of formation is 4000mg/L.
Advantage of the present invention and positively effect are:
1. by researching and developing 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 the independently sludge reflux system that arranges is conducive to keep dominant bacteria separately, raising system stability and high efficiency.
2. by the novel bioreactor of dynamic membrane of research and development, adopt cheap porous medium as hollow-fibre membrane and flat sheet membrane in the traditional MBR of replacement such as ceramic membrane, filter cloth, the cake layer forming by medium is realized and being filtered the crown_interception of pollution substance, filtration resistance is little, greatly reduces energy consumption.
3. the present invention, by each processing unit reasonable combination, forms integrated combination process, has flow process simple, and processing efficiency is high, and the advantage that energy consumption is low has been opened up ABS waste water treatment new technology.
Accompanying drawing explanation
Fig. 1 is ABS waste water treatment process flow sheet 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 and take from chemical inc, Dagu, Tianjin, the composite waste of producing 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 this engineering processing technological flow.
(1) coagulation-settlement process: select conventional chemical coagulating agent PAC as treatment agent, adopt dosing pump to be quantitatively added in waste water and carry out mechanical stirring, then flow to settling tank and carry out mud-water separation.The materials such as most suspended substance and partial organic substances, colloidal solid, phosphorus are mainly removed in this unit.
(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 processing enters Dynamic Membrane reactor and carries out degree of depth removal organism, phosphorus etc., thereby reaches purification water outlet.
(3) bioreactor of dynamic membrane technique: the rear water outlet of biochemical system processing enters Dynamic Membrane reactor and carries out degree of depth removal organism, phosphorus etc., thereby reaches purification water outlet.In this reactor, by being also that the high, normal, basic liquid level of controller realizes the water inlet of controlling reactor, utilize peristaltic pump to aspirate water outlet, adopt 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, the terylene short fiber filter cloth that bioreactor of dynamic membrane filtering substrate is 24um, and membrane flux is 60L/m2.h; The mixed liquor suspended solid, MLSS concentration that active sludge and Powdered Activated Carbon form is 4000mg/L.This construction waste water is administered 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 waste water treatment novel process, it comprises coagulating sedimentation, biochemical system, bioreactor of dynamic membrane three parts form.Be specially: ABS factory effluent is through coagulating sedimentation pre-treatment, remove the materials such as most suspended substance and partial organic substances, colloidal solid, phosphorus, then enter parallel-series bio-augmentation treatment system (PSB), 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 processing enters bioreactor of dynamic membrane and carries out degree of depth removal organism, nitrogen, phosphorus etc., thereby reaches purification water outlet.
Described parallel-series bio-augmentation treatment system (PSB) is that Aerobic Pond is in parallel with anaerobic pond, then connects with anoxic pond, and Aerobic Pond arranges independently sludge reflux system, and anaerobic pond and anoxic pond share another denitrification dephosphorization sludge reflux system.This biochemical system has efficient removal organism, synchronous denitrification dephosphorizing ability.
Described bioreactor of dynamic membrane is to adopt cheap porous medium as supporting filtering substrate, and add powder activated carbon and active sludge, by suction filtration, form cake layer realization the absorption of pollution substance is held back to removal and the removal to chroma in waste water.
2. parallel-series bio-augmentation treatment system according to claim 1 (PSB), is characterized in that Aerobic Pond inoculation has ABS efficient degrading bacteria, and anoxic pond inoculation has denitrifying phosphorus removing bacteria.
3. according to the parallel-series bio-augmentation treatment system (PSB) described in right 1～2, it is characterized in that aerobic sludge reflux ratio is 30～40%, denitrification dephosphorization return sludge ratio is 50～60%.
4. according to the parallel-series bio-augmentation treatment system (PSB) described in right 1～3, it 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, is characterized in that Aerobic Pond DO concentration is 2～4mg/L, and anaerobic pond and anoxic pond all do not arrange aerating system.
6. according to Dynamic Membrane pore diameter range in the bioreactor of dynamic membrane described in right 1, be 10～30um, 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; In reactor, adopt cross-flow micro-pore aeration mode.
7. according to the matrix that adds described in the bioreactor of dynamic membrane described in right 1 and 6, be active sludge and Powdered Activated Carbon, the mixed liquor suspended solid, MLSS concentration of formation is 4000mg/L.
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| CN201210285321.1A CN103588344A (en) | 2012-08-13 | 2012-08-13 | Novel process for treating ABS wastewater |
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| CN201210285321.1A CN103588344A (en) | 2012-08-13 | 2012-08-13 | Novel process for treating ABS wastewater |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104310710A (en) * | 2014-10-27 | 2015-01-28 | 山东省环境保护科学研究设计院 | High-efficiency energy-saving treatment process for coal chemical industry wastewater |
| CN105347603A (en) * | 2014-08-22 | 2016-02-24 | 宜兴市天立环保有限公司 | Treatment method for fish meal manufacturing wastewater |
| CN105731739A (en) * | 2016-05-07 | 2016-07-06 | 长春工业大学 | Comprehensive treatment method for wastewater generated by ABS resin production |
| WO2016162290A1 (en) * | 2015-04-07 | 2016-10-13 | Sabic Global Technologies B.V. | Method of purifying wastewater from an abs emulsion polymerization process |
| CN108483822A (en) * | 2018-05-30 | 2018-09-04 | 济南大学 | A kind of Combined waste water high-efficient denitrification and dephosphorization processing unit and application |
| CN108640200A (en) * | 2018-05-11 | 2018-10-12 | 浙江水利水电学院 | A kind of the distributing rural water supply processing system and method for novel dynamic biological film |
| CN111925066A (en) * | 2020-08-20 | 2020-11-13 | 重庆大学 | Split type continuous operation micro-grid dynamic membrane bioreactor |
-
2012
- 2012-08-13 CN CN201210285321.1A patent/CN103588344A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347603A (en) * | 2014-08-22 | 2016-02-24 | 宜兴市天立环保有限公司 | Treatment method for fish meal manufacturing wastewater |
| CN104310710A (en) * | 2014-10-27 | 2015-01-28 | 山东省环境保护科学研究设计院 | High-efficiency energy-saving treatment process for coal chemical industry wastewater |
| CN104310710B (en) * | 2014-10-27 | 2015-12-09 | 山东省环境保护科学研究设计院 | A kind of coal chemical wastewater treating technique |
| WO2016162290A1 (en) * | 2015-04-07 | 2016-10-13 | Sabic Global Technologies B.V. | Method of purifying wastewater from an abs emulsion polymerization process |
| CN105731739A (en) * | 2016-05-07 | 2016-07-06 | 长春工业大学 | Comprehensive treatment method for wastewater generated by ABS resin production |
| CN108640200A (en) * | 2018-05-11 | 2018-10-12 | 浙江水利水电学院 | A kind of the distributing rural water supply processing system and method for novel dynamic biological film |
| CN108640200B (en) * | 2018-05-11 | 2021-01-05 | 杭州索原环境科技有限公司 | Distributed rural feedwater treatment system and method utilizing biochar dynamic membrane |
| CN108483822A (en) * | 2018-05-30 | 2018-09-04 | 济南大学 | A kind of Combined waste water high-efficient denitrification and dephosphorization processing unit and application |
| CN111925066A (en) * | 2020-08-20 | 2020-11-13 | 重庆大学 | Split type continuous operation micro-grid dynamic membrane bioreactor |
| CN111925066B (en) * | 2020-08-20 | 2021-07-27 | 重庆大学 | Split type continuous operation micro-grid dynamic membrane bioreactor |
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Application publication date: 20140219 |