CN109607787A - A kind of high strength domestic sewage processing unit and method - Google Patents

A kind of high strength domestic sewage processing unit and method Download PDF

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Publication number
CN109607787A
CN109607787A CN201811624597.1A CN201811624597A CN109607787A CN 109607787 A CN109607787 A CN 109607787A CN 201811624597 A CN201811624597 A CN 201811624597A CN 109607787 A CN109607787 A CN 109607787A
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CN
China
Prior art keywords
aeration tank
sewage
pond
anoxic pond
aeration
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Pending
Application number
CN201811624597.1A
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Chinese (zh)
Inventor
李冰
姚鹏
余葱葱
祝伟宏
夏礼军
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WUHAN ZIGUANG CONTROL TECHNOLOGY Co Ltd
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WUHAN ZIGUANG CONTROL TECHNOLOGY Co Ltd
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Priority to CN201811624597.1A priority Critical patent/CN109607787A/en
Publication of CN109607787A publication Critical patent/CN109607787A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/308Biological phosphorus removal
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/16Nitrogen compounds, e.g. ammonia
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds

Abstract

The present invention proposes a kind of high strength domestic sewage processing unit and method, including the first aeration tank set gradually, anoxic pond, anaerobic pond, second aeration tank, biological aerated filter, anoxic pond is connected to anaerobism bottom of pond portion, the first sewage water inlet pipe and the second sewage water inlet pipe are respectively equipped in first aeration tank and anoxic pond, anoxic pond is connected with the second aeration tank by nitrification liquid return pipe, first aeration tank, second aeration tank and biological aerated filter bottom of pond are respectively equipped with first, second, third aerator, it is connected respectively by pipeline with Aeration fan, first aeration tank, anoxic pond, anaerobic pond, install combination biologic packing material in second aeration tank additional, install dephosphorization filtrate in biological aerated filter additional, bottom is arranged mud discharging mouth and connects sludge pipe.The present invention is easy for installation, and process structure is simple, compact, rationally distributed, high to the removal rate of organic matter, ammonia nitrogen, phosphorus, SS, has been improved particularly the denitrogenation dephosphorizing efficiency of system.

Description

A kind of high strength domestic sewage processing unit and method
Technical field
The invention belongs to the technical field of sanitary sewage disposal more particularly to a kind of high strength domestic sewage processing unit and Method.
Background technique
Recently as improvement of living standard, China's city domestic sewage and some Expressway Services etc. go out Existing ammonia-nitrogen content raising, carbon-nitrogen ratio downward trend.High ammonia nitrogen, low C/N waste water belong to the waste water of difficult biological treatment, excessively high ammonia Nitrogen concentration has certain inhibiting effect to microorganism.A large number of studies show that the nitrogen and phosphorus in sewage are to lead to water eutrophication The denitrogenation dephosphorizing of one of the main reason for change, sewage are imperative.New sewage treatment discharge standard is to nutrients such as nitrogen phosphorus Control require to be increasingly stringenter, in city domestic sewage biological treatment system, it is dirty how to improve ammonia nitrogen in high density, low C/N The denitrogenation dephosphorizing efficiency of water is always a difficult point.
A2/ O technique has simple structure, total hrt as a kind of simplest synchronous denitrogen dephosphorus technology Short, design and operation experience is mature, control complexity is small and is not likely to produce the series of advantages such as sludge bulking, is that traditional wastewater factory changes It is built into the optimum technology of the sewage plant with denitrogenation dephosphorizing function, which is also current China's city sewage plant In one of most widely used synchronous denitrogen dephosphorus technology.However A2There is also a series of problems, such as nitrifier for/O technique The contradiction of sludge age, contradiction of substrate competition etc. between dephosphorization bacterial, it is very difficult to further increase the efficiency of denitrogenation dephosphorizing.
Summary of the invention
The technical problem to be solved by the invention is to solve the above problems providing a kind of high strength domestic sewage The efficiency and stability of system denitrogenation dephosphorizing can be improved in processing unit and method.
The technical proposal adopted by the invention to solve the above technical problems is that: a kind of high strength domestic sewage processing unit, It is characterised in that it includes the first aeration tank set gradually, anoxic pond, anaerobic pond, the second aeration tank, biological aerated filter, institute It states anoxic pond to be connected to anaerobism bottom of pond portion, is respectively equipped with the first sewage water inlet pipe and second in first aeration tank and anoxic pond Sewage water inlet pipe, anoxic pond and the second aeration tank are connected by nitrification liquid return pipe, the first aeration tank, the second aeration tank and exposure Gas biofilter bottom of pond is respectively equipped with the first, second, third aerator, and first, second, third aerator leads to respectively Piping is connected with Aeration fan, and the first aeration tank, anaerobic pond, installs combination biologic packing material in the second aeration tank additional at anoxic pond, exposes Install dephosphorization filtrate in gas biofilter additional, bottom is arranged mud discharging mouth and connects sludge pipe.
According to the above scheme, first, second sewage water inlet pipe is equipped with flow control valve.
According to the above scheme, the dephosphorization filtrate is polypropylene pellets, installs light ceramic, iron additional inside the polypropylene pellets Wood shavings, volcanic rock.
A kind of high strength domestic sewage processing method, which comprises the steps of:
A part of sewage is introduced into the first aeration tank, combines biologic packing material enriched biological film, the first aerator, for biology Film oxygen supply, aerobic bacteria is using the organic matter in dioxygen oxidation sewage, and nitrobacteria is by nitration reaction, by ammonium oxidation in water Enter anoxic pond for the nitrification liquid gravity flow that nitrate generates to release nitrate reduction for nitrogen by the effect of denitrifying bacteria It is put into atmosphere, realizes system denitrogenation, while another part sewage raw water is directly entered anoxic pond, provides carbon for nitrobacteria Source enters subsequent anaerobic pond by the sewage that anoxic pond is handled, polyP bacteria is in anaerobic condition conducive to the nitric efficiency of the system of raising Under release phosphorus, create conditions for subsequent aerobic phosphorus absorption, sewage enters the second aeration tank, and organic matter continues by aerobic biologic membrane oxidation point Phosphorus in sewage is enriched in microbial body by largely inhaling phosphorus, the mesh of sewage dephosphorization is reached by spoil disposal by solution, polyP bacteria , meanwhile, the nitrification liquid that nitrobacteria participates in oxidation in the second aeration tank is back to anoxic pond by reflux pump, carries out anti-nitre Change, consolidation system denitrogenation, sewage enters biological aerated filter, under aeration effect, dephosphorization filtrate can be discharged into water Fe2+, Fe3+ can remove phosphorus in sewage by the modes such as adsorbing, precipitating, and the remaining rich phosphorous sludge for filtering generation passes through outside sludge pipe Row realizes sewage dephosphorization, due to the suction-operated of filtrate, can remove a large amount of SS and reduce excess sludge production, finally remain Remaining sludge is discharged by sludge pipe.
The beneficial effects of the present invention are: 1, a kind of high strength domestic sewage processing unit and method are provided, clicked through using two Water, the first sewage water inlet pipe are introduced into the first aeration tank, and can not only degrade partial organic substances, can also promote ammonium oxidation, Improve ammonia nitrogen removal;Second water inlet is directly entered anoxic pond, and sufficient carbon source can be provided for the anti-nitration reaction of anoxic pond, promotes Denitrification denitrogenation efficiency;2, anaerobic pond water outlet is directly entered the second aeration tank, realizes inversion A2/ O function, i.e. polyP bacteria anaerobism are released Direct aerobic phosphorus absorption after phosphorus can produce " hungry effect ", improve the removal of system phosphorus;3, aeration tank, anoxic pond, in anaerobic pond It installs composite filling additional, on the one hand can improve microorganism concn with enriched functional microorganism, mention pollutants removal rate, it is another Aspect filler has large surface area, can also retain a large amount of suspended matters, and two aspects can reduce excess sludge;4, aeration life Dephosphorization filtrate is installed in object filter tank additional using light ceramic, iron plane flower, volcanic rock, biofilm carrier is on the one hand used as, is enriched with micro- life Object oxygenolysis dirt water pollutant can discharge Ca containing elements such as Ca, Fe, Al in another party's light ceramic into water2+、Fe2 +、Fe3+、Al3+Fe can also be discharged into water Deng, iron plane flower2+、Fe3+, a large amount of metalliferous minerals are contained in volcanic rock, these can all lead to The effects of crossing precipitating, absorption, by the phosphorus ligands in sewage.Simultaneously because the suction-operated of filtrate, can remove a large amount of SS and Reduce excess sludge production;5, integrated artistic includes ammonium oxidation twice, it is only necessary to a nitrification liquid reflux, while anoxic pond is mended Carbon source is filled, it can be achieved that carbon source makes full use of, improves ammonia nitrogen conversion efficiency, improves the functions such as system nitric efficiency.End increases simultaneously Add reinforced phosphor-removing biological filter unit, inside installs cheap dephosphorization filtrate additional, can avoid biological phosphate-eliminating not with reinforced phosphor-removing efficiency Stable common fault improves the denitrogenation dephosphorizing rate of whole system;6, end uses biological aerated filter, and filtrate has larger surface Product, can adsorb a large amount of biomembranes, also act as filtration, mud-water separation can be realized without settler.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the invention.
Fig. 2 is the structural schematic diagram of the dephosphorization filtrate of one embodiment of the invention.
Wherein: the first aeration tank 1-, 2- anoxic pond, 3- anaerobic pond, the second aeration tank 4-, 5- biological aerated filter, 6- One sewage water inlet pipe, the second sewage water inlet pipe of 7-, 8- nitrification liquid return pipe, the first aerator of 9-, the second aerator of 10-, 11- third aerator, 12- Aeration fan, 13- combine biologic packing material, 14- dephosphorization filtrate, 15- polypropylene pellets, 16- lightweight Haydite, 17- iron plane flower, 18- volcanic rock.
Specific embodiment
For a better understanding of the invention, the invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of high strength domestic sewage processing unit, including set gradually the first aeration tank 1, anoxic pond 2, anaerobic pond 3, the second aeration tank 4, biological aerated filter 5, anoxic pond is connected to anaerobism bottom of pond portion, the first aeration tank and anoxic pond In be respectively equipped with the first sewage water inlet pipe 6 and the second sewage water inlet pipe 7, anoxic pond and the second aeration tank pass through nitrification liquid return pipe 8 are connected, and the first aeration tank, the second aeration tank and biological aerated filter bottom of pond are respectively equipped with the first aerator 9, second aeration Device 10, third aerator 11 are connected with Aeration fan 12 by pipeline respectively, the first aeration tank, anoxic pond, anaerobic pond, It installs combination biologic packing material 13 in second aeration tank additional, installs dephosphorization filtrate 14 in biological aerated filter additional, mud discharging is arranged in bottom Mouth connection sludge pipe.
First, second sewage water inlet pipe is equipped with flow control valve, for adjusting flow of inlet water.
As shown in Fig. 2, dephosphorization filtrate is polypropylene pellets 15, inside installs light ceramic 16 additional, iron plane spends 17, volcanic rock 18。
A kind of high strength domestic sewage processing method, includes the following steps:
A part of sewage is introduced into the first aeration tank, combines biologic packing material enriched biological film, the first aerator, for biology Film oxygen supply, aerobic bacteria is using the organic matter in dioxygen oxidation sewage, and nitrobacteria is by nitration reaction, by ammonium oxidation in water Enter anoxic pond for the nitrification liquid gravity flow that nitrate generates to release nitrate reduction for nitrogen by the effect of denitrifying bacteria It is put into atmosphere, realizes system denitrogenation, while another part sewage raw water is directly entered anoxic pond, provides carbon for nitrobacteria Source enters subsequent anaerobic pond by the sewage that anoxic pond is handled, polyP bacteria is in anaerobic condition conducive to the nitric efficiency of the system of raising Under release phosphorus, create conditions for subsequent aerobic phosphorus absorption, sewage enters the second aeration tank, and organic matter continues by aerobic biologic membrane oxidation point Phosphorus in sewage is enriched in microbial body by largely inhaling phosphorus, the mesh of sewage dephosphorization is reached by spoil disposal by solution, polyP bacteria , meanwhile, the nitrification liquid that nitrobacteria participates in oxidation in the second aeration tank is back to anoxic pond by reflux pump, carries out anti-nitre Change, consolidation system denitrogenation, sewage enters biological aerated filter, under aeration effect, dephosphorization filtrate can be discharged into water Fe2+, Fe3+ can remove phosphorus in sewage by the modes such as adsorbing, precipitating, and the remaining rich phosphorous sludge for filtering generation passes through outside sludge pipe Row realizes sewage dephosphorization, due to the suction-operated of filtrate, can remove a large amount of SS and reduce excess sludge production, finally remain Remaining sludge is discharged by sludge pipe.
This process Installation is convenient, and process structure is simple, compact, rationally distributed, to organic matter, ammonia nitrogen, phosphorus, SS removal rate Height has been improved particularly the denitrogenation dephosphorizing efficiency of system, and excess sludge production is few, is not necessarily to settler, working service is simple, especially Suitable for the high concentrations such as cities and towns, Expressway Service, low C/N than sanitary sewage processing.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (4)

1. a kind of high strength domestic sewage processing unit, which is characterized in that including set gradually the first aeration tank, anoxic pond, Anaerobic pond, the second aeration tank, biological aerated filter, the anoxic pond are connected to anaerobism bottom of pond portion, first aeration tank and lack The first sewage water inlet pipe and the second sewage water inlet pipe are respectively equipped in oxygen pond, anoxic pond and the second aeration tank are flowed back by nitrification liquid Pipe is connected, and the first aeration tank, the second aeration tank and biological aerated filter bottom of pond are respectively equipped with the first, second, third aeration dress It sets, first, second, third aerator passes through pipeline respectively and is connected with Aeration fan, and the first aeration tank, is detested at anoxic pond It installs combination biologic packing material in oxygen pond, the second aeration tank additional, installs dephosphorization filtrate in biological aerated filter additional, mud discharging is arranged in bottom Mouth connection sludge pipe.
2. a kind of high strength domestic sewage processing unit according to claim 1, which is characterized in that described first, second Sewage water inlet pipe is equipped with flow control valve.
3. a kind of high strength domestic sewage processing unit according to claim 2, which is characterized in that the dephosphorization filtrate is Polypropylene pellets, the polypropylene pellets inside install light ceramic, iron plane flower, volcanic rock additional.
4. a kind of high strength domestic sewage processing method, which comprises the steps of:
A part of sewage is introduced into the first aeration tank, combines biologic packing material enriched biological film, and the first aerator supplies for biomembrane Ammonium oxidation in water, by nitration reaction, is nitre using the organic matter in dioxygen oxidation sewage, nitrobacteria by oxygen, aerobic bacteria The nitrification liquid gravity flow that hydrochlorate generates enters anoxic pond and is discharged into nitrate reduction for nitrogen by the effect of denitrifying bacteria In atmosphere, system denitrogenation is realized, while another part sewage raw water is directly entered anoxic pond, provides carbon source for nitrobacteria, benefit In the nitric efficiency of the system of raising, enter subsequent anaerobic pond by the sewage that anoxic pond is handled, polyP bacteria is released under anaerobic Phosphorus creates conditions for subsequent aerobic phosphorus absorption, and sewage enters the second aeration tank, and organic matter continues by aerobic biologic membrane oxygenolysis, Phosphorus in sewage is enriched in microbial body by largely inhaling phosphorus, achievees the purpose that sewage dephosphorization by spoil disposal, together by polyP bacteria When, the nitrification liquid that nitrobacteria participates in oxidation in the second aeration tank is back to anoxic pond by reflux pump, carries out denitrification, reinforcing System denitrogenation, sewage enter biological aerated filter, and under aeration effect, dephosphorization filtrate can discharge Fe into water2+、Fe3+, can To filter the remaining rich phosphorous sludge of generation by sludge pipe outlet, realize by removing the phosphorus in sewage in a manner of adsorbing, precipitate etc. Sewage dephosphorization can remove a large amount of SS and reduce excess sludge production, last excess sludge is logical due to the suction-operated of filtrate Cross sludge pipe discharge.
CN201811624597.1A 2018-12-28 2018-12-28 A kind of high strength domestic sewage processing unit and method Pending CN109607787A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112499913A (en) * 2020-12-30 2021-03-16 魏一明 Enhanced nitrogen and phosphorus removal domestic sewage treatment method
CN113248082A (en) * 2021-05-28 2021-08-13 浙江问源环保科技股份有限公司 Device for promoting, transforming and strengthening phosphorus removal of rural domestic sewage by using iron shavings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112499913A (en) * 2020-12-30 2021-03-16 魏一明 Enhanced nitrogen and phosphorus removal domestic sewage treatment method
CN113248082A (en) * 2021-05-28 2021-08-13 浙江问源环保科技股份有限公司 Device for promoting, transforming and strengthening phosphorus removal of rural domestic sewage by using iron shavings

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