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 PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
water outlet
enters
anoxic pond
aerobic tank
tank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201610245879.5A
Other languages
Chinese (zh)
Other versions
CN105776542A (en
Inventor
张静
叶勇
许光远
侯红勋
朱甲华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cecep Guozhen Environmental Protection Technology Co.,Ltd.
Original Assignee
Anhui Guoshen Environment Protection And Energy Saving Science And Technology Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Guoshen Environment Protection And Energy Saving Science And Technology Co filed Critical Anhui Guoshen Environment Protection And Energy Saving Science And Technology Co
Priority to CN201610245879.5A priority Critical patent/CN105776542B/en
Publication of CN105776542A publication Critical patent/CN105776542A/en
Application granted granted Critical
Publication of CN105776542B publication Critical patent/CN105776542B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • 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
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities

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

A kind of improvement AAO sewage treatment process of IV class of surface water up to standard
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.
CN201610245879.5A 2016-04-20 2016-04-20 A kind of improvement AAO sewage treatment process of IV class of surface water up to standard Active CN105776542B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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

Publications (2)

Publication Number Publication Date
CN105776542A CN105776542A (en) 2016-07-20
CN105776542B true CN105776542B (en) 2019-03-29

Family

ID=56397987

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610245879.5A Active 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

Country Status (1)

Country Link
CN (1) CN105776542B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
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
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101691268A (en) * 2009-09-17 2010-04-07 上海市政工程设计研究总院 Biochemical reaction tank and denitrification and dephosphorization process thereof
CN101830603A (en) * 2010-05-19 2010-09-15 哈尔滨工业大学深圳研究生院 System and method for removing phosphorus by three-mud process nitrification and denitrification
CN105217789A (en) * 2015-10-29 2016-01-06 天津万峰环保科技有限公司 A kind of high-efficient denitrification and dephosphorization technique being applicable to low carbon-nitrogen ratio sewage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101691268A (en) * 2009-09-17 2010-04-07 上海市政工程设计研究总院 Biochemical reaction tank and denitrification and dephosphorization process thereof
CN101830603A (en) * 2010-05-19 2010-09-15 哈尔滨工业大学深圳研究生院 System and method for removing phosphorus by three-mud process nitrification and denitrification
CN105217789A (en) * 2015-10-29 2016-01-06 天津万峰环保科技有限公司 A kind of high-efficient denitrification and dephosphorization technique being applicable to low carbon-nitrogen ratio sewage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
A2O-MBR+AO生物滤池+深度过滤消毒工艺的再生水回用工程案例;官章琴等;《净水技术》;20141231;第33卷(第s2期);第7-10页

Also Published As

Publication number Publication date
CN105776542A (en) 2016-07-20

Similar Documents

Publication Publication Date Title
CN105776542B (en) A kind of improvement AAO sewage treatment process of IV class of surface water up to standard
CN105776541B (en) A kind of improvement oxidation ditch process of IV class of surface water up to standard
Li et al. Advanced treatment of landfill leachate by a new combination process in a full-scale plant
CN103819049B (en) A kind of sewage water treatment method and system
Moawad et al. Coupling of sequencing batch reactor and UASB reactor for domestic wastewater treatment
CN101624252B (en) Efficient treatment process for printing and dyeing waste water
CN109133531A (en) A kind of process for town sewage treatment being applicable in quasi- IV class water quality standard
CN100509665C (en) Method for processing waste water through coordination of Diatemite and biochemical function
CN204058199U (en) A kind of A2/O+ MBR combined sewage water regenerating unit
CN102531298A (en) Sewage treatment device and method for enhanced denitrification A/A/O (Anodic Aluminum Oxide) and deoxygenation BAF (Biological Aerated Filter)
CN105776758B (en) A kind of Modified SBR sewage treatment process of IV class of surface water up to standard
CN109133532A (en) A kind of process for town sewage treatment being applicable in quasi- IV class water quality standard
CN101746931B (en) Denitrification dephosphorization biological treatment and filtration integral sewage treatment system and method thereof
CN104030443A (en) Fine management-based municipal sewage enhanced phosphorus and nitrogen removal system and treatment process thereof
CN201598224U (en) Biological nitrogen and phosphorus removal treatment and filter integrated sewage treatment system
CN108585350A (en) A kind of town sewage treatment system up to standard to IV class water of surface water
CN103936230B (en) The sewage water treatment method that a kind of activated sludge process and biological contact oxidation process combine
CN103073154B (en) Treatment process of refractory pharmaceutical park tail water
JP2020524076A (en) Method to upgrade and expand capacity of activated sludge process by biological treatment process of sewage based on functional floating carrier
CN104445837A (en) Industrial combined wastewater bio-augmentation treatment system and method
CN103435158A (en) Method for reinforcing phosphorus removal and membrane pollution delaying of MBR
CN105174642A (en) Efficient biological denitrification method for sewage
WO2020093643A1 (en) System and method for treating black and odorous river channel sewage
CN107973488B (en) Method for denitrification treatment of ammonia nitrogen wastewater
CN109354316A (en) A kind of low-temperature wastewater treatment technique can reach IV class standard of surface water

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CP01 Change in the name or title of a patent holder

Address after: 230088 No. 91 science Avenue, hi tech Zone, Anhui, Hefei

Patentee after: Cecep Guozhen Environmental Protection Technology Co.,Ltd.

Address before: 230088 No. 91 science Avenue, hi tech Zone, Anhui, Hefei

Patentee before: Anhui Guozhen environmental protection and energy saving Technology Co.,Ltd.

CP01 Change in the name or title of a patent holder