CN105776542B - A kind of improvement AAO sewage treatment process of IV class of surface water up to standard - Google Patents
A kind of improvement AAO sewage treatment process of IV class of surface water up to standard Download PDFInfo
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- CN105776542B CN105776542B CN201610245879.5A CN201610245879A CN105776542B CN 105776542 B CN105776542 B CN 105776542B CN 201610245879 A CN201610245879 A CN 201610245879A CN 105776542 B CN105776542 B CN 105776542B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention discloses a kind of improvement AAO sewage treatment process of IV class of surface water up to standard, comprising the following steps: sewage removes the ss suspended solid in water removal by pretreatment precipitating；AAO biochemistry pool is passed through in pretreatment water outlet, and the water outlet of AAO biochemistry pool enters secondary settling tank and is separated by solid-liquid separation, and the supernatant of secondary settling tank discharge enters coagulation reaction tank, and water outlet enters denitrification filter pool and further removes remaining nitrate nitrogen；Denitrification filter pool water outlet, which enters after sterilization pool carries out disinfection, discharges.AAO biochemistry pool of the present invention realizes biological phosphate-eliminating denitrogenation processing using the alternate cycles of three different pieces of anaerobic- anoxic- oxic, and anoxic part and aerobic part are respectively set three, and are arranged alternately；Anoxic pond and aerobic tank are alternately connected, and the setting of mixed liquor reflux unit is reduced；Adding for third anoxic pond setting additional carbon, can make up for it the deficiency of denitrifying carbon source；The setting of third aerobic tank can consume the residual of third anoxic pond additional carbon.
Description
Technical field
The invention belongs to technical field of sewage, the improvement AAO sewage treatment of specifically a kind of IV class of surface water up to standard
Technique.
Background technique
As China's water pollution problems increasingly highlights, the raising of urban wastewater treatment discharge standard has been trend of the times.From
The requirement that current quality of water environment improves sees, treated for many municipal sewage plants, and water outlet is often discharged into urban river,
Water body as river.The existing sewage disposal plant effluent in China, discharge standard refer to " GB 18918-2002 town sewage more
Treatment plant's pollutant emission standard " in level-one A.However for level-one A standard, water quality just corresponds to bad V class of surface water
Water.This water quality is discharged into the water body environment there are few self-purification capacity, causes water body not repaired not only, instead by dirt
Then there is the phenomenon that ' the more controlling the more dirty ' in dye.Water pollution increasingly sharpens, and an urgent demand effluent of municipal sewage plant reaches
IV class standard of earth's surface class.CODCr is reduced to 30mg/l by the 50mg/L of level-one A；BOD5 is reduced by the 10mg/L of level-one A
To 6mg/L；Ammonia nitrogen by level-one A 5mg/L(8mg/L) be reduced to 1.5mg/L(2.5mg/L)；Total phosphorus by level-one A 0.5mg/L
It is reduced to 0.3mg/L；Total nitrogen is reduced to 5mg/L(10mg/L by the 15mg/L of level-one A).Currently, the ground such as Beijing, Kunming, Hefei
Expansion practice, the requirement to sewage effluents CODCr, ammonia nitrogen, total nitrogen, total phosphorus etc. are higher successively.
Summary of the invention
In view of the deficiencies of the prior art, the present invention proposes a kind of improvement AAO sewage treatment process of IV class of surface water up to standard.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of improvement AAO sewage treatment process of IV class of surface water up to standard, which is characterized in that the sewage treatment process packet
Include following steps:
(1) sewage removes the ss suspended solid in water removal by pretreatment precipitating；The pre-treatment step is that sewage passes through sand setting
Pond or sedimentation basin carry out preliminary sedimentation；
(2) pretreatment water outlet respectively enters anaerobic pond and the second anoxic pond, and the anaerobic pond water outlet enters the first anoxic pond,
The first anoxic pond water outlet enters the first aerobic tank, and the first aerobic tank water outlet enters the second anoxic pond, and described second lacks
The water outlet of oxygen pond enters the second aerobic tank, and second aerobic tank water outlet enters third anoxic pond, the third anoxic pond be discharged into
Enter third aerobic tank, third aerobic tank part mixed liquor flows back into the first anoxic pond；The third anoxic pond adds carbon source,
The Nitrate-N Use additional carbon that second aerobic tank generates carries out denitrification for Removing Nitrogen；
(3) water outlet of third aerobic tank enters secondary settling tank and is separated by solid-liquid separation, and sludge a part of precipitating flows back into anaerobic pond,
A part is discharged as excess sludge；
(4) supernatant of secondary settling tank discharge enters coagulation reaction tank, and water outlet enters denitrification filter pool and further removes residual
Nitrate nitrogen；The coagulation reaction tank adds chemical dephosphorization medicament, and it is molysite or aluminium salt that the chemical dephosphorization, which adds medicament,；
(5) denitrification filter pool water outlet enters after sterilization pool carries out disinfection and discharges.
Beneficial effects of the present invention: the present invention improves AAO technique, and AAO biochemistry pool is good using anaerobic-anoxic-
The alternate cycles of three different pieces of oxygen realize biological phosphate-eliminating denitrogenation processing, and anoxic part and aerobic part are respectively set three,
And be arranged alternately, anaerobic pond is used for biological phosphate-eliminating；Anaerobic pond and the second anoxic pond use segmental influent, can make full use of raw water
In carbon source carry out denitrification for Removing Nitrogen；Anoxic pond and aerobic tank are alternately connected, and the setting of mixed liquor reflux unit is reduced；Third
Adding for anoxic pond setting additional carbon, can make up for it the deficiency of denitrifying carbon source；The setting of third aerobic tank can consume
The residual of three anoxic pond additional carbons.The present invention can make full use of the pre-denitrification and denitrogenation that raw water carbon source carries out AAO technique,
In combination with rear-mounted denitrification filter tank advanced nitrogen and the chemical dephosphorization technology of depth, it can be ensured that IV class water of class goes out water gauge
Quasi- stablizing is realized.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
Such as Fig. 1.The invention proposes a kind of improvement AAO sewage treatment process of IV class of surface water up to standard, including following step
It is rapid:
1, the sewage that sewage plant generates removes the SS in water removal by the pretreatment precipitating of setting pot or sedimentation basin, it is ensured that after
The stabilization of continuous biochemical reaction.SS refers to the suspended matter in sewage.
2, first segment pretreatment water outlet initially enters anaerobic pond, and in anaerobic pond, polyP bacteria utilizes the organic matter in raw water
Anaerobic phosphorus release is carried out as carbon source and the energy；Anaerobic pond goes out water mixed liquid into the first anoxic pond, in the first anoxic pond, anti-nitre
Changing the organic matter that the abundant anaerobic pond of bacterium does not run out of is that carbon source carries out anti-nitration reaction, and the nitrate nitrogen carried in mixed liquor is converted
It is removed at nitrogen；First anoxic pond goes out water mixed liquid into the first aerobic tank, by remaining organic matter in the first aerobic tank into one
Step carries out carburizing reagent, while the ammonia nitrogen in raw water carries out nitration reaction and becomes nitrate nitrogen；The water outlet of first aerobic tank enters second
Anoxic pond, while the second segment for pre-processing water outlet enters the second anoxic pond, in the second anoxic pond, the nitre of the first aerobic tank generation
State nitrogen is carbon source using the raw water organic matter of the second segment of pretreatment water outlet, carries out denitrification for Removing Nitrogen；Second anoxic pond be discharged into
Enter the second aerobic tank, in the second aerobic tank, ammonia nitrogen progress nitration reaction becomes nitrate nitrogen in the second anoxic pond, remains simultaneously
Machine object carries out carbonization removal；The water outlet of second aerobic tank enters third anoxic pond, meanwhile, third anoxic pond adds additional carbon,
In third anoxic pond, the Nitrate-N Use additional carbon that the second aerobic tank generates carries out denitrification for Removing Nitrogen；The water outlet of third anoxic pond
Into third aerobic tank, in third aerobic tank, ammonia nitrogen progress nitration reaction becomes nitrate nitrogen in third anoxic pond, remains simultaneously
Organic matter carries out carbonization removal, and third aerobic tank part mixed liquor flows back into the first anoxic pond.
3, the water outlet of third aerobic tank enters secondary settling tank, and the settled sludge that secondary settling tank generates enters anaerobic pond, a part of conduct
Excess sludge discharge.
4, the supernatant of secondary settling tank discharge enters coagulation reaction tank, and adds chemical dephosphorization medicament, carries out chemical dephosphorization, changes
Learning dephosphorization and adding medicament is molysite or aluminium salt, and the added amount of chemical is determined according to sewage quantity and pollutant load；Be discharged into
Enter denitrification filter pool and further removed remaining nitrate nitrogen, to achieve the purpose that remove total nitrogen, and by coagulation reaction tank
The metal phosphorizing of generation closes object wadding body and is filtered removal removal total phosphorus.
5, denitrification filter pool water outlet enters after sterilization pool carries out disinfection and discharges.
Above content is only to structure of the invention example and explanation, affiliated those skilled in the art couple
Described specific embodiment does various modifications or additions or is substituted in a similar manner, without departing from invention
Structure or beyond the scope defined by this claim, is within the scope of protection of the invention.
Claims (1)
1. a kind of improvement AAO sewage treatment process of IV class of surface water up to standard, which is characterized in that the sewage treatment process includes
Following steps:
(1) sewage removes the ss suspended solid in water removal by pretreatment precipitating；The pre-treatment step be sewage by setting pot or
Sedimentation basin carries out preliminary sedimentation
(2) pretreatment water outlet respectively enters anaerobic pond and the second anoxic pond, and the anaerobic pond water outlet enters the first anoxic pond, described
The water outlet of first anoxic pond enters the first aerobic tank, and the first aerobic tank water outlet enters the second anoxic pond, second anoxic pond
Water outlet enters the second aerobic tank, and second aerobic tank water outlet enters third anoxic pond, and the third anoxic pond water outlet enters the
Three aerobic tanks, third aerobic tank part mixed liquor flow back into the first anoxic pond；The third anoxic pond adds carbon source, and second
The Nitrate-N Use additional carbon that aerobic tank generates carries out denitrification for Removing Nitrogen
(3) water outlet of third aerobic tank enters secondary settling tank and is separated by solid-liquid separation, and sludge a part of precipitating flows back into anaerobic pond, and one
It is allocated as excess sludge discharge；
(4) supernatant of secondary settling tank discharge enters coagulation reaction tank, and water outlet enters denitrification filter pool and further removes remaining nitre
State nitrogen；The coagulation reaction tank adds chemical dephosphorization medicament, and it is molysite or aluminium salt that the chemical dephosphorization, which adds medicament,；
(5) denitrification filter pool water outlet enters after sterilization pool carries out disinfection and discharges.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610245879.5A CN105776542B (en) | 2016-04-20 | 2016-04-20 | A kind of improvement AAO sewage treatment process of IV class of surface water up to standard |
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| CN201610245879.5A CN105776542B (en) | 2016-04-20 | 2016-04-20 | A kind of improvement AAO sewage treatment process of IV class of surface water up to standard |
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| CN105776542A CN105776542A (en) | 2016-07-20 |
| CN105776542B true CN105776542B (en) | 2019-03-29 |
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| CN106277575B (en) * | 2016-08-11 | 2019-06-21 | 浙江华强环境科技有限公司 | A kind for the treatment of for reuse technique of papermaking wastewater |
| CN106277574B (en) * | 2016-08-11 | 2019-06-21 | 浙江华强环境科技有限公司 | A kind of paper-making effluent treating process |
| CN108996840B (en) * | 2018-08-30 | 2024-04-19 | 葛洲坝集团生态环保有限公司 | Sewage treatment equipment and method for strengthening combination of biological denitrification and flat ceramic membrane |
| CN109354316A (en) * | 2018-11-21 | 2019-02-19 | 北京科泰兴达高新技术有限公司 | A kind of low-temperature wastewater treatment technique can reach IV class standard of surface water |
| CN109607782A (en) * | 2018-12-11 | 2019-04-12 | 深圳市瑞清环保科技有限公司 | Sewage-treatment plant and its processing method |
| CN110407419B (en) * | 2019-09-02 | 2024-05-14 | 江苏金博源环保科技有限公司 | IV-class standard surface water sewage treatment process and equipment |
| CN111252906A (en) * | 2020-02-26 | 2020-06-09 | 深圳市华宇创鑫环境科技有限公司 | Slow-release carbon source, preparation method and wastewater treatment method |
| CN112591886A (en) * | 2020-11-02 | 2021-04-02 | 中车唐山机车车辆有限公司 | Rural sewage treatment method |
| CN112374696A (en) * | 2020-11-09 | 2021-02-19 | 河北先河正合环境科技有限公司 | System and method for treating sewage by multistage multi-point water inflow enhanced denitrification |
| CN115432818A (en) * | 2021-06-03 | 2022-12-06 | 北京大有汇泽科技有限公司 | Enhanced denitrification biological treatment method for sewage |
| CN115490352A (en) * | 2021-06-20 | 2022-12-20 | 高峰 | Process for improving discharge standard of nitrogen and phosphorus in secondary biochemical effluent of municipal domestic sewage |
| CN113582340A (en) * | 2021-08-04 | 2021-11-02 | 深圳市环保科技集团有限公司 | Industrial wastewater total nitrogen treatment system |
| CN114349276A (en) * | 2021-12-30 | 2022-04-15 | 北控水务(中国)投资有限公司 | Sewage treatment system and method |
| CN116040862A (en) * | 2022-12-28 | 2023-05-02 | 中冶京诚工程技术有限公司 | Municipal wastewater treatment system and method |
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