CN102381817B - System for processing waste water generated in acrylamide production and processing method thereof - Google Patents

System for processing waste water generated in acrylamide production and processing method thereof Download PDF

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Publication number
CN102381817B
CN102381817B CN 201110311094 CN201110311094A CN102381817B CN 102381817 B CN102381817 B CN 102381817B CN 201110311094 CN201110311094 CN 201110311094 CN 201110311094 A CN201110311094 A CN 201110311094A CN 102381817 B CN102381817 B CN 102381817B
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China
Prior art keywords
waste water
liquid outlet
acrylamide
treatment
communicated
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CN 201110311094
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Chinese (zh)
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CN102381817A (en
Inventor
李春友
于丽波
时敏江
邱学勤
孙维波
迟默然
刘国
翁文永
苏晓飞
刘占明
王春丽
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宁波先安化工有限公司
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Abstract

A system for processing waste water generated in acrylamide production is characterized by comprising a neutralization adjustment tank, an upflow anaerobic sludge blanket (UASB) reactor, a coagulating sedimentation device, a secondary sedimentation tank, an A/O reaction tank, a discharging tank or a dewatering pipe network and a sludge concentration tank. The invention also discloses a waste water processing method adopting the system for processing waste water generated in acrylamide production. Compared with the prior art, the system and the method have the advantages that most suspended matters in the waste water are removed by coagulating sedimentation, COD (Chemical Oxygen Demand) in the waste water is resolved and converted, and is combined with UASB reaction and A/O technology, the denitrification reaction is completed in a biotic environment where anaerobism, oxygen deficiency and oxic aerobic change alternately.

Description

The treatment system of acrylamide factory effluent and treatment process thereof
Technical field
The present invention relates to a kind for the treatment of system of acrylamide factory effluent, the invention also discloses the treatment process of acrylamide factory effluent.
Background technology
The polymkeric substance of acrylamide and derivative are widely used in the industries such as oil, medicine, papermaking, weaving, mining, water treatment, prone soil improvement, seed pelleting, aquaculture, food-processing, be known as all trades auxiliary agent, it forms take the petroleum chemicals vinyl cyanide as Raw material processing.The waste water of acrylamide industry is mainly produced by fermented liquid membrane sepn operation and acrylamide refining step, the processing scheme that adopts at present or the general wastewater processing technology of tradition, and whole system mainly is comprised of two steps of anaerobic and aerobic.Waste water after handling still contains a large amount of microbiological contamination body suspended substances, and the ammonia nitrogen amount in the waste water is high, and conventional processing does not reach drainage requirement.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind for the treatment of effect Canon to reach the treatment system of the acrylamide factory effluent of emission request for the above-mentioned state of the art.
Technical problem to be solved by this invention is to provide a kind for the treatment of effect Canon to reach the treatment process of the acrylamide factory effluent of emission request for the above-mentioned state of the art.
The present invention solves the problems of the technologies described above the technical scheme that adopts: a kind for the treatment of system of acrylamide factory effluent is characterized in that comprising
In and equalizing tank, have that waste water adds entrance and pH regulator liquid adds entrance;
Up flow anaerobic sludge blanket reactor has that the first fluid inlet, the first liquid outlet, polymerize aluminum chloride add entrance, poly amic acid adds entrance and sludge outlet;
The coagulating sedimentation device, have with aforementioned in and the second fluid inlet of being communicated with of the liquid outlet of equalizing tank reach the second liquid outlet that is communicated with aforementioned the first fluid inlet; And
Secondary sedimentation basins has and aforementioned the 3rd fluid inlet, the 3rd liquid outlet and bypass outlet;
The A/O reaction tank, the filtrate refluxing opening that has the 4th fluid inlet that is communicated with aforementioned the first liquid outlet, four liquid outlets that are communicated with aforementioned the 3rd fluid inlet and be communicated with aforementioned bypass outlet;
Discharging pond or network of drains have the 5th fluid inlet that communicates with aforementioned the 3rd liquid outlet; And
Sludge thickener, be communicated with aforesaid sludge outlet and bypass outlet and have with aforementioned in and the 5th liquid outlet that communicates of equalizing tank.
Described sludge thickener is connected with between a desliming, have between this desliming with described in and the 6th liquid outlet that communicates of equalizing tank.
Further, this system also comprises by an accident pool, this accident pool have microbiological contamination waste water add entrance and with described in the liquid outlet that is communicated with equalizing tank.
Further, have phosphoric acid salt on the feed liquor pipeline of described up flow anaerobic sludge blanket reactor and add entrance.
Further, this system also comprise one can in and the air blast machine room of equalizing tank and A/O reaction tank air feed.
Further, described coagulating sedimentation device has also that polymerize aluminum chloride adds entrance and poly amic acid adds entrance.
A kind of acrylamide production wastewater treatment method is characterized in that comprising the steps:
⑴ during the waste water that acrylamide production process produces joins and in the equalizing tank, add alkali or acid, regulate pH value to 8 ~ 9;
From and equalizing tank waste water out carry out primary sedimentation through the coagulating sedimentation device;
⑶ through up flow anaerobic sludge blanket reactor, resolve into small molecules product with organic pollutant from coagulating sedimentation device waste water out;
⑷ carry out the nitrification and denitrification reaction from up flow anaerobic sludge blanket reactor waste water out through the A/O reaction tank;
⑸ last, through entering into discharging pond or network of drains after the secondary sedimentation basins precipitation.
Further, be added with the HSB composite bacteria in the described up flow anaerobic sludge blanket reactor.
Compared with prior art, the invention has the advantages that: remove most suspended substance in the waste water by coagulating sedimentation, and with the COD decomposition and inversion in the waste water, in conjunction with the UASB of postorder reaction and A/O technique, finish denitrification reaction by anaerobism, anoxic and the aerobic coenocorrelation that alternately changes.Under anaerobic, by the acidication reaction, organonitrogen is converted to ammonia nitrogen.Under anoxia condition, denitrifying bacteria utilizes organic carbon in the sewage as electronics worker donor, and " anaerobic respiration becomes nitrogen to discharge nitrate-nitrogen reduction in the phegma as electron acceptor(EA) with nitrate.Finish denitrification process.And under aerobic condition, nitrifier is oxidized to nitrate to the ammonia nitrogen in the sewage, refluxes to anoxic pond, for necessary preparation is carried out in denitrogenation again.
Description of drawings
Fig. 1 is the embodiment process flow sheet.
Embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
Between during the treatment system of the acrylamide factory effluent in the present embodiment comprises and equalizing tank 1, up flow anaerobic sludge blanket reactor 2 (UASB reactor), coagulating sedimentation device 3, secondary sedimentation basins 6, A/O reaction tank 4, discharging pond 7, dosing 10, between air blast machine room 5, sludge thickener 9, desliming 8 and accident pool 11.
In and equalizing tank 1 have that waste water adds entrance and pH regulator liquid adds entrance, up flow anaerobic sludge blanket reactor 2 has the first fluid inlet 1a and the first liquid outlet 1b, the first fluid inlet 1a is provided with the feed liquor pipeline, has phosphoric acid salt on the feed liquor pipeline and adds entrance.
Coagulating sedimentation device 3 have with in and the second fluid inlet 2a of being communicated with of the liquid outlet of equalizing tank 1 reach that the second liquid outlet 2b, the polymerize aluminum chloride that are communicated with the first fluid inlet 1a add entrance, poly amic acid adds entrance and sludge outlet.The model that coagulating sedimentation device 3 in the present embodiment adopts BeiJing ZhongKe water Hitek Ltd to produce is the highly effective coagulation settling vessel of ZKB-60.
Secondary sedimentation basins 6 has and the 3rd fluid inlet 3a, the 3rd liquid outlet 3b and bypass outlet 2d.The filtrate refluxing opening 3d that A/O reaction tank 4 has the 4th fluid inlet 4a that is communicated with the first liquid outlet 1b, the 4th liquid outlet 4b that is communicated with the 3rd fluid inlet 3a and is communicated with bypass outlet 2d.Discharging pond 7 has the 5th fluid inlet 5a that communicates with the 3rd liquid outlet 3b.Sludge thickener 9 and sludge outlet 1d and bypass outlet 2d be communicated with and have with in and the 5th liquid outlet 5b that communicates of equalizing tank 1.
8 are connected between sludge thickener 9 and desliming, between desliming 8 have with in and the 6th liquid outlet 6b that communicates of equalizing tank 1.Accident pool 11 have microbiological contamination waste water add entrance and with in the liquid outlet 7b that is communicated with equalizing tank.Air blast machine room 5 can in and equalizing tank 1 and A/O reaction tank 4 air feed, to improve the water treatment effect.10 can provide acid, alkali, PAC, PAM and phosphoric acid salt between dosing.
The treatment process of the acrylamide factory effluent in the present embodiment is utilized above-mentioned Waste Water Treatment, specifically comprises the steps:
⑴ during the waste water that acrylamide production process produces joins and in the equalizing tank 1, add alkali or acid, regulate pH value to 8 ~ 9;
From and equalizing tank 1 waste water out carry out primary sedimentation through coagulating sedimentation device 3;
⑶ be added with the up flow anaerobic sludge blanket reactor 2 of HSB composite bacteria from coagulating sedimentation device 3 waste water process out, organic pollutant is resolved into the small molecules product, and wherein the technology of HSB composite bacteria can be with reference to the disclosed HSB composite bacteria that adopts No. 52123, Taiwan patent;
⑷ carry out the nitrification and denitrification reaction from up flow anaerobic sludge blanket reactor 3 waste water out through A/O reaction tank 4;
⑸ last, through entering into discharging pond 7 after the secondary sedimentation basins precipitation.
If microbiological contamination waste water is arranged, can cut first accident pool 11, enter in proportion again and equalizing tank in, and the sanitary wastewater in the acrylamide production process can directly be mixed in and equalizing tank.
Muddy water mixed solution is after secondary sedimentation basins 6 separates, and waste water reaches standard of drainage and enters discharging pond 7, and the filtrate in the mud is back to A/O reaction tank 4.The primary sludge that the excess sludge of secondary sedimentation basins 6 and coagulating sedimentation device 3 discharged enters sludge thickener 9, and thickened sludge is outward transport after dehydration, during 8 filtrates that produce enter between sludge thickener 9 supernatant liquors and desliming and equalizing tank 1.
The significant parameter of original waste water is as follows in the present embodiment: pH:4 ~ 12; COD:8000mg/l; Ammonia nitrogen: 800mg/l; SS is 1270mg/l.
Water treatment effect is as follows:

Claims (7)

1. the treatment system of an acrylamide factory effluent is characterized in that comprising
In and equalizing tank, have that waste water adds entrance and pH regulator liquid adds entrance;
Up flow anaerobic sludge blanket reactor has the first fluid inlet, the first liquid outlet;
The coagulating sedimentation device, have with aforementioned in and the second fluid inlet of being communicated with of the liquid outlet of equalizing tank reach that the second liquid outlet, the polymerize aluminum chloride that are communicated with aforementioned the first fluid inlet add entrance, poly amic acid adds entrance and sludge outlet; And
Secondary sedimentation basins has the 3rd fluid inlet, the 3rd liquid outlet and bypass outlet;
The A/O reaction tank, the filtrate refluxing opening that has the 4th fluid inlet that is communicated with aforementioned the first liquid outlet, the 4th liquid outlet that is communicated with aforementioned the 3rd fluid inlet and be communicated with aforementioned bypass outlet;
Discharging pond or network of drains have the 5th fluid inlet that communicates with aforementioned the 3rd liquid outlet; And
Sludge thickener, be communicated with aforesaid sludge outlet and bypass outlet and have with aforementioned in and the 5th liquid outlet that communicates of equalizing tank.
2. the treatment system of acrylamide factory effluent according to claim 1 is characterized in that described sludge thickener is connected with between a desliming, have between this desliming with described in and the 6th liquid outlet that communicates of equalizing tank.
3. the treatment system of acrylamide factory effluent according to claim 1 is characterized in that this system also includes an accident pool, this accident pool have microbiological contamination waste water add entrance and with described in the liquid outlet that is communicated with equalizing tank.
4. the treatment system of acrylamide factory effluent according to claim 1 is characterized in that having phosphoric acid salt on the feed liquor pipeline of described up flow anaerobic sludge blanket reactor adds entrance.
5. the treatment system of acrylamide factory effluent according to claim 1, it is characterized in that this system also comprise one can in and the air blast machine room of equalizing tank and A/O reaction tank air feed.
6. the application method of wastewater treatment for the treatment of system of requirement 1 described acrylamide factory effluent of having the right is characterized in that comprising the steps:
⑴ during the waste water that acrylamide production process produces joins and in the equalizing tank, add alkali or acid, regulate pH value to 8 ~ 9;
From and equalizing tank waste water out carry out primary sedimentation through the coagulating sedimentation device;
⑶ through up flow anaerobic sludge blanket reactor, resolve into small molecules product with organic pollutant from coagulating sedimentation device waste water out;
⑷ carry out the nitrification and denitrification reaction from up flow anaerobic sludge blanket reactor waste water out through the A/O reaction tank;
⑸ last, through entering into discharging pond or network of drains after the secondary sedimentation basins precipitation.
7. the method for wastewater treatment of the treatment system of acrylamide factory effluent according to claim 6 is characterized in that being added with in the described up flow anaerobic sludge blanket reactor HSB composite bacteria.
CN 201110311094 2011-10-14 2011-10-14 System for processing waste water generated in acrylamide production and processing method thereof CN102381817B (en)

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CN105439262B (en) * 2014-08-28 2018-03-20 中国石油化工股份有限公司 A kind of preprocess method containing organic amine wastewater
CN108083572A (en) * 2017-12-22 2018-05-29 中国海洋大学 A kind of method and apparatus for handling the waste water containing polyacrylamide
CN108911367A (en) * 2018-06-26 2018-11-30 浙江环耀环境建设有限公司 Polyamide waste water treatment system and its treatment process

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CN101439918A (en) * 2008-11-28 2009-05-27 南京大学 Method for processing wastewater from polyacrylamide production
CN201520698U (en) * 2009-09-20 2010-07-07 浙江华强环境科技有限公司 Leachate treatment system based on MBR system and nano-filtration system
CN102107988A (en) * 2010-12-22 2011-06-29 上海康盛环保能源科技有限公司 Phenol-amine wastewater treatment and recycling method and device

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JP2003154389A (en) * 2001-11-21 2003-05-27 Kubota Corp Advanced treatment method for sewage/wastewater

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Publication number Priority date Publication date Assignee Title
CN101439918A (en) * 2008-11-28 2009-05-27 南京大学 Method for processing wastewater from polyacrylamide production
CN201520698U (en) * 2009-09-20 2010-07-07 浙江华强环境科技有限公司 Leachate treatment system based on MBR system and nano-filtration system
CN102107988A (en) * 2010-12-22 2011-06-29 上海康盛环保能源科技有限公司 Phenol-amine wastewater treatment and recycling method and device

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