CN204058199U - A kind of A2/O+ MBR combined sewage water regenerating unit - Google Patents

A kind of A2/O+ MBR combined sewage water regenerating unit Download PDF

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Publication number
CN204058199U
CN204058199U CN201420533332.1U CN201420533332U CN204058199U CN 204058199 U CN204058199 U CN 204058199U CN 201420533332 U CN201420533332 U CN 201420533332U CN 204058199 U CN204058199 U CN 204058199U
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pond
mbr
deoxidation
regenerating unit
water
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黄重成
张萍
黄周蔚
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CHINA UNION ENGINEERING CO., LTD.
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CHINA UNION ENGINEERING Co Ltd
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Abstract

The utility model discloses a kind of A2/O+MBR combined sewage water regenerating unit, comprise the anaerobic pond, anoxic pond, Aerobic Pond, the MBR membrane cisterna that connect successively, it is characterized in that: also comprise a deoxidation pond, described deoxidation pond is connected with MBR membrane cisterna, anaerobic pond, anoxic pond, and described deoxidation pond is used for being back to anaerobic pond or anoxic pond by after the mixed solution deoxidation in MBR membrane cisterna.Modified form A2/O+MBR combined sewage water regenerating unit described in the utility model, for sewage disposal, have that denitrogenation dephosphorizing efficiency is high, stable, flexibility of operation is good, effluent quality advantages of higher, water outlet can reach the water quality standard of reclaimed water reuse.

Description

A kind of A2/O+ MBR combined sewage water regenerating unit
Technical field
The utility model relates to and belongs to water treatment field, particularly modified form A2/O+MBR combined sewage water regenerating unit.
Background technology
" 12 " period, mark transformation along with carrying of sewage work, improving constantly of Treated sewage reusing ratio, has higher requirement to sewage treatment process and Effluent criteria.For satisfied national urban sewage reutilization standard, in sewage treatment process, secondary biochemical treatment need possess denitrogenation dephosphorizing function usually, generally comprise the alternate cycles of anaerobism, anoxic, aerobic three various process, more employing suspension type activated sludge process, mainly contains three series: oxidation ditch series, sequencing batch reactor (SBR) series, A2/O are serial.1) oxidation ditch series of processes: when sludge loading is too high, easily produce Filamentous Bulking; Mud is partially long for age, and sludge aging, easily produces foam; Flow velocity inequality and sludgd deposition problem, greatly reduce the useful volume of oxidation ditch, reduces treatment effect, affect effluent quality.2) SBR series of processes: working time and dissolved oxygen are two important parameters affecting Nitrogen/Phosphorus Removal.The technique resting period is run, and requires high to automatic control; Become water level to run, power consumption is larger; Denitrogenation dephosphorizing efficiency is not too high, and sludge stabilization is poor.3) A2/O series of processes: there is technical process simple, contaminant removal efficiency is high, stable, have good anti impulsion load, sludge settling property is good, but system sludge concentration is lower, and sludge reflux is in anaerobic pond, higher containing nitrate concentration, fight for organic carbon source with polyP bacteria, denitrogenation dephosphorizing requirement cannot be met simultaneously.
Traditional A2/O process flow sheet as shown in Figure 1, it only adopts secondary biochemical treatment art breading, and water outlet can't reach regeneration standard, and the mainly total nitrogen, total phosphorus, colourity etc. of more difficult further biological treatment, must increase advanced treatment process.Advanced treatment process should according to effluent reuse situation, consider technology, economic factors, common technique mainly contains: charcoal absorption, ozone-active carbon, deamination, ion-exchange, membrane separation technique, BAF, ozone oxidation, natural purification system etc.
Due to membrane filtration technique can remove conventional treatment process be difficult to remove pollutent, especially based on micro-filtration (MF) and ultrafiltration (UF) membrane filtration technique, microorganism in energy effectively catching water, turbidity, macromole hardly degraded organic substance, be widely used in the regeneration process carrying mark transformation and sewage of sewage work.But membrane filtration technique mechanism is based on sieving, in the face of the emission request that nitrogen, phosphorus ligands day are stricter, with the combination of secondary biochemical treatment, utilize the advantage of membrane technique, the denitrogenation dephosphorizing function of enhanced biological section, becomes the focus of research day by day.
Utility model content
For the problems referred to above, the purpose of this utility model is to be optimized combination to second-stage treatment and advanced treatment in regeneration effluent treatment process, change the reflux type of traditional A2/O, increase the handiness of technological operation, the A2/O+ MBR combined sewage water regenerating unit that a kind of technique is simple, sludge concentration is high, denitrogenation dephosphorizing efficiency is high, stable, flexibility of operation is good, effluent quality is high is provided.
For achieving the above object, the technical scheme that the utility model proposes is: a kind of A2/O+ MBR combined sewage water regenerating unit, comprise the anaerobic pond, anoxic pond, Aerobic Pond, the MBR membrane cisterna that connect successively, it is characterized in that: also comprise a deoxidation pond, described deoxidation pond is connected with MBR membrane cisterna, anaerobic pond, anoxic pond, and described deoxidation pond is used for being back to anaerobic pond or anoxic pond by after the mixed solution deoxidation in MBR membrane cisterna.
Preferably, also comprise a sludge return pipe, described sludge return pipe connects anoxic pond and anaerobic pond, by the sewage backflow in anoxic pond to anaerobic pond.
Preferably, described regeneration effluent device adopts buried ecological construction.
Preferably, each treating pond adopts steel and concrete structure, shares pool wall, is designed to an integral module.
Adopt technique scheme, modified form A2/O+MBR combined sewage water regenerating unit described in the utility model, by the mixed solution in MBR membrane cisterna is back to anaerobic pond or anoxic pond according to temperature conditions after deoxidation, change traditional sludge reflux mode, add the flexibility of operation of mixed-liquor return, strengthening biological carbon and phosphorous removal function, is aided with chemical dephosphorization, what make full use of MBR membrane cisterna retains separation function simultaneously, ensures effluent quality; Have that denitrogenation dephosphorizing efficiency is high, stable, flexibility of operation is good, effluent quality advantages of higher, water outlet can reach the water quality standard of reclaimed water reuse.
Accompanying drawing explanation
Fig. 1 is traditional A2/O process flow diagram;
Fig. 2 is A2/O+ MBR combined sewage water regenerating unit schematic diagram described in the utility model;
Fig. 3 is A2/O+ MBR combined sewage water reclaiming process denitrogenation dephosphorizing mode chart described in the utility model;
Fig. 4 is A2/O+ MBR combined sewage water reclaiming process denitrogenation mode chart described in the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
As shown in Figure 2, A2/O+ MBR combined sewage water regenerating unit, comprise the anaerobic pond, anoxic pond, Aerobic Pond, the MBR membrane cisterna that connect successively, also comprise a deoxidation pond, described deoxidation pond is connected with MBR membrane cisterna, anaerobic pond, anoxic pond, and described deoxidation pond is used for being back to anaerobic pond or anoxic pond by after the mixed solution deoxidation in MBR membrane cisterna.Preferably, also comprise a sludge return pipe, described sludge return pipe connects anoxic pond and anaerobic pond, by the sewage backflow in anoxic pond to anaerobic pond.
Preferably, described regeneration effluent device adopts buried ecological construction.
Preferably, each treating pond adopts steel and concrete structure, shares pool wall, is designed to an integral module.
During concrete enforcement, sewage after pretreatment enters anaerobic pond, anoxic pond, Aerobic Pond successively; Mixed flow in Aerobic Pond with run by gravity, or adopts pump to promote to enter membrane cisterna, and Aerobic Pond realizes the excessive consumption to the removal of BOD5, nitrification and phosphorus.Time normal temperature (water temperature > 15 DEG C), as shown in Figure 3, run biological carbon and phosphorous removal pattern, membrane cisterna mixed solution is back to anoxic pond front end through deoxidation pond and carries out denitrification denitrogenation, and anoxic pond end is back to anaerobic pond front end with the flow of one times of respective handling scale water yield; During low temperature (water temperature≤15 DEG C), as shown in Figure 4, run raw denitrogenation pattern, membrane cisterna mixed solution is back to anaerobic pond through deoxidation pond, and stop sludge reflux, now technique principal security denitrification effect, is aided with chemical dephosphorization, in Aerobic Pond, adds Dephosphorization reagent; Membrane cisterna retains removal further to Recalcitrant chemicals, and what go out water pump aspirates water outlet from membrane module rising pipe.
Embodiment 1
For (mechanical grille, equalizing tank, the film grid) water inlet after pretreatment of New city core, somewhere sewage works, influent COD, ammonia nitrogen and total phosphorus value (COD=100-400mg/L, ammonia nitrogen=10-40mg/L, TP=2.5-3.5mg/L).The hydraulic detention time (HRT) of deoxidation, anaerobism, anoxic and aerobic zone is respectively 0.5h, 1h, 2.5h and 3h, and return current ratio of the mixed liquid is 200%, and return sludge ratio is 100%.During sewage water temperature > 15 DEG C, run biological carbon and phosphorous removal pattern, carry out biological carbon and phosphorous removal; During water temperature≤15 DEG C, run biological denitrificaion pattern, in Aerobic Pond, add 30mg/L Tai-Ace S 150.MBR membrane bioreactor adopts hollow fiber film assembly.This treatment unit water outlet reaches " urban sewage reutilization urban reclaimed water water quality " (GB/T18920-2002) urban afforestation water, water quality standard of flushing the toilet.
Embodiment 2
Embodiment 2 is certain reused water processing station, landscape lake engineering, is with the difference of embodiment 1, and increase degree of depth chemical dephosphorization technique after the water outlet of MBR membrane bioreactor, polymerize aluminum chloride dosage is 30mg/L; During water temperature≤15 DEG C, when running denitrogenation pattern, in Aerobic Pond, add 20mg/L polymerize aluminum chloride.Depth type filtration adopts active sand filter tank, selects filtering velocity to be 5m3/ (m2h).Owing to adding degree of depth chemical dephosphorization technique, after process, water outlet reaches " urban sewage reutilization water for scenic environment use water quality " (GB/T 18920-2002) standard.
Can be drawn by embodiment 1,2, after carrying out regeneration effluent process by this technique, Nitrogen/Phosphorus Removal is good, and process operation handiness is high, goes out water quality and can reach urban reclaimed water water quality standard; Separately according to project reality, degree of depth chemical dephosphorization technique can be increased, water for scenic environment use water quality standard can be reached.
Although specifically show in conjunction with preferred embodiment and describe the utility model; but those skilled in the art should be understood that; not departing from the spirit and scope of the present utility model that appended claims limits; in the form and details the utility model is made a variety of changes, be protection domain of the present utility model.

Claims (4)

1. an A2/O+ MBR combined sewage water regenerating unit, comprise the anaerobic pond, anoxic pond, Aerobic Pond, the MBR membrane cisterna that connect successively, it is characterized in that: also comprise a deoxidation pond, described deoxidation pond is connected with MBR membrane cisterna, anaerobic pond, anoxic pond, and described deoxidation pond is used for being back to anaerobic pond or anoxic pond by after the mixed solution deoxidation in MBR membrane cisterna.
2. a kind of A2/O+ MBR combined sewage water regenerating unit according to claim 1, is characterized in that, also comprise a sludge return pipe, and described sludge return pipe connects anoxic pond and anaerobic pond, by the sewage backflow in anoxic pond to anaerobic pond.
3. a kind of A2/O+ MBR combined sewage water regenerating unit according to claim 1, it is characterized in that, described regeneration effluent device adopts buried ecological construction.
4. a kind of A2/O+ MBR combined sewage water regenerating unit according to claim 1, is characterized in that, each treating pond adopts steel and concrete structure, shares pool wall, is designed to an integral module.
CN201420533332.1U 2014-03-28 2014-09-17 A kind of A2/O+ MBR combined sewage water regenerating unit Active CN204058199U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104230107A (en) * 2014-03-28 2014-12-24 中联环有限公司 A2/O (anaerobic-anoxic-oxic) and MBR (membrane bioreactor) combined sewage regeneration technology and device
CN105836965A (en) * 2016-04-29 2016-08-10 无锡普汇环保科技有限公司 Intelligentized sewage treatment expert system
CN106186327A (en) * 2016-08-30 2016-12-07 宁国市渠源净水设备有限公司 Waste water pollutant-removing system and using method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104118969B (en) * 2014-07-08 2016-02-17 广州市市政工程设计研究总院 A kind of A2O-MBR waste disposal plant and method
CN104341043A (en) * 2014-11-19 2015-02-11 中国市政工程华北设计研究总院有限公司 System for enhanced denitrification with inner reflux mixing liquid type oxygen removal pool and method
CN106882875A (en) * 2017-02-16 2017-06-23 洪胜男 With the system and method for nitrogen phosphorus in membrane technology removal sewage
CN112093899A (en) * 2020-07-30 2020-12-18 同济大学 Method and system for biological nitrogen and phosphorus removal of sewage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101372379B (en) * 2008-05-28 2012-06-27 北京碧水源科技股份有限公司 Double membrane processing method for organic wastewater
CN101928096B (en) * 2009-12-28 2012-07-25 清华大学 Sewage treatment method and system in ecological sensitive areas
KR101126871B1 (en) * 2010-02-05 2012-03-23 금강엔지니어링 주식회사 Advanced treatment system of wastewater having a plasma discharging tank
CN103896463A (en) * 2014-03-31 2014-07-02 中联环有限公司 A<2>/O and MBR combined sewage regenerating process and device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104230107A (en) * 2014-03-28 2014-12-24 中联环有限公司 A2/O (anaerobic-anoxic-oxic) and MBR (membrane bioreactor) combined sewage regeneration technology and device
CN104230107B (en) * 2014-03-28 2016-03-02 中联环股份有限公司 A kind of A2/O+ MBR combined sewage water reclaiming process and device thereof
CN105836965A (en) * 2016-04-29 2016-08-10 无锡普汇环保科技有限公司 Intelligentized sewage treatment expert system
CN106186327A (en) * 2016-08-30 2016-12-07 宁国市渠源净水设备有限公司 Waste water pollutant-removing system and using method

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CN104230107B (en) 2016-03-02
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Address after: Siming District of Xiamen city in Fujian province after the 361004 Dai Xi Road No. 28 building 28 floor huangtech

Patentee after: CHINA UNION ENGINEERING CO., LTD.

Address before: Siming District of Xiamen city in Fujian province after the 361004 Dai Xi Road No. 28 building 28 floor huangtech

Patentee before: China Union Engineering Co., Ltd.