CN108862841A - One kind being based on modified form A2The sewage water treatment method of O technique - Google Patents
One kind being based on modified form A2The sewage water treatment method of O technique Download PDFInfo
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- CN108862841A CN108862841A CN201810693055.3A CN201810693055A CN108862841A CN 108862841 A CN108862841 A CN 108862841A CN 201810693055 A CN201810693055 A CN 201810693055A CN 108862841 A CN108862841 A CN 108862841A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 107
- 239000010865 sewage Substances 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 56
- 239000010802 sludge Substances 0.000 claims abstract description 58
- 241000894006 Bacteria Species 0.000 claims abstract description 54
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 24
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000010992 reflux Methods 0.000 claims description 46
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 40
- 229910052698 phosphorus Inorganic materials 0.000 claims description 40
- 239000011574 phosphorus Substances 0.000 claims description 40
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 25
- 239000001301 oxygen Substances 0.000 claims description 25
- 229910052760 oxygen Inorganic materials 0.000 claims description 25
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 241000193403 Clostridium Species 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 241000633183 Anaerolinea Species 0.000 claims description 9
- 241000186000 Bifidobacterium Species 0.000 claims description 9
- 238000005868 electrolysis reaction Methods 0.000 claims description 9
- 241000607715 Serratia marcescens Species 0.000 claims description 8
- 241001141128 Flavobacteriales Species 0.000 claims description 7
- 241000588621 Moraxella Species 0.000 claims description 7
- 241000601428 Phycisphaerae Species 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- 238000004659 sterilization and disinfection Methods 0.000 claims description 6
- 241001430073 Candidatus Anammoxoglobus propionicus Species 0.000 claims description 5
- 241000468339 Candidatus Brocadia Species 0.000 claims description 5
- 241000480585 Candidatus Kuenenia Species 0.000 claims description 5
- 241000661436 Candidatus Scalindua Species 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- 241001397818 Candidatus Jettenia Species 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 238000005273 aeration Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims 1
- 229920000388 Polyphosphate Polymers 0.000 abstract description 14
- 239000001205 polyphosphate Substances 0.000 abstract description 14
- 235000011176 polyphosphates Nutrition 0.000 abstract description 14
- 229920000037 Polyproline Polymers 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 11
- 241001453382 Nitrosomonadales Species 0.000 abstract description 9
- 239000005416 organic matter Substances 0.000 description 14
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- 238000006396 nitration reaction Methods 0.000 description 9
- 238000007254 oxidation reaction Methods 0.000 description 9
- 244000005700 microbiome Species 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 6
- 230000005611 electricity Effects 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 5
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 5
- 229920001397 Poly-beta-hydroxybutyrate Polymers 0.000 description 5
- 229920000331 Polyhydroxybutyrate Polymers 0.000 description 5
- 210000004027 cell Anatomy 0.000 description 5
- 238000000855 fermentation Methods 0.000 description 5
- 230000004151 fermentation Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 102000004169 proteins and genes Human genes 0.000 description 4
- 108090000623 proteins and genes Proteins 0.000 description 4
- ZKHQWZAMYRWXGA-KQYNXXCUSA-N Adenosine triphosphate Chemical compound C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](COP(O)(=O)OP(O)(=O)OP(O)(O)=O)[C@@H](O)[C@H]1O ZKHQWZAMYRWXGA-KQYNXXCUSA-N 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 235000011054 acetic acid Nutrition 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 150000001720 carbohydrates Chemical class 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000003834 intracellular effect Effects 0.000 description 3
- 150000007524 organic acids Chemical class 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 206010021143 Hypoxia Diseases 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 2
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 2
- 150000001413 amino acids Chemical class 0.000 description 2
- 230000001651 autotrophic effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 239000004310 lactic acid Substances 0.000 description 2
- 235000014655 lactic acid Nutrition 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 239000000693 micelle Substances 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- -1 nitrogenous compound Chemical class 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 241001589086 Bellapiscis medius Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- 241000108664 Nitrobacteria Species 0.000 description 1
- FRYDSOYOHWGSMD-UHFFFAOYSA-N [C].O Chemical compound [C].O FRYDSOYOHWGSMD-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 238000004176 ammonification Methods 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
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- 230000029087 digestion Effects 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000037406 food intake Effects 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 208000018875 hypoxemia Diseases 0.000 description 1
- 230000001146 hypoxic effect Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- YPJKMVATUPSWOH-UHFFFAOYSA-N nitrooxidanyl Chemical compound [O][N+]([O-])=O YPJKMVATUPSWOH-UHFFFAOYSA-N 0.000 description 1
- 150000007523 nucleic acids Chemical class 0.000 description 1
- 102000039446 nucleic acids Human genes 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 150000003904 phospholipids Chemical class 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
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Classifications
-
- 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
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
- C02F3/005—Combined electrochemical biological processes
-
- 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
- C02F3/308—Biological phosphorus removal
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present invention provides one kind to be based on modified form A2The sewage water treatment method of O technique, belongs to technical field of sewage, specifically includes：Sewage passes sequentially through anaerobic pond, anoxic pond, aerobic tank and secondary settling tank, and the interior backflow mixed liquor of aerobic tank enters anaerobic pond after mixing with the water inlet of anaerobic pond and handled, and anaerobic pond is inoculated with the anaerobic sludge through taming.The removal of total nitrogen is completed by anaerobic ammonia oxidizing bacteria and denitrifying bacterium collective effect, denitrification ability is strong, and does not compete carbon source and growing space with polyP bacteria, and dephosphorization efficiency is high, solves traditional A2The contradiction of polyP bacteria and denitrifying bacterium carbon source competition and sludge age difference in O technique anaerobic pond.
Description
Technical field
The present invention relates to technical field of sewage, and in particular to one kind is based on modified form A2The sewage treatment side of O technique
Method.
Background technique
A2O technique is also known as AAO technique, i.e., is a kind of common secondary sewage processing work in anaerobic-anoxic-aerobic process
Skill, has the function of synchronous denitrification dephosphorizing, and process is：Sewage and returned sludge are introduced into anaerobic pond (DO<0.2mg/L) completely
Mixing, the anaerobic digestion through certain time remove part BOD, and part nitrogenous compound are made to be converted to N2Release, returned sludge
In poly- phosphorus Microbiological release go out phosphorus, meet the needs of bacterium is to phosphorus, then sewage flow into anoxic pond (DO≤0.5mg/L), pond
In denitrifying bacteria using carbonaceous organic material undecomposed in sewage as carbon source, by what is come in aerobic tank by inner circulating reflux
Reducing nitrate radical is N2And discharge, following sewage flows into aerobic tank (DO=2~4mg/L), and the ammonia nitrogen in water nitrify anti-
Nitrate anion should be generated, while the oxidation operation in water decomposes supply and inhales phosphorus microorganism with energy, microorganism absorbs phosphorus from water,
Phosphorus enters cell tissue, is enriched in microorganism, is discharged from system in the form of rich phosphorous sludge after precipitation and separation.Detesting
Oxygen/anoxic/aerobic (A2O) during Process for Treating Municipal, since the water quality of the low organic matter of municipal sewage, high nitrogen phosphorus is special
Point causes carbon source insufficient, so that denitrification denitrogenation is undesirable during this, is extremely difficult to good synchronous denitrification dephosphorizing effect.
China Patent No. CN201310474121.5 discloses a kind of modified form A2O sewage water treatment method, by aerobic
The biological phase separator being arranged in pond enters sedimentation basin, while the supernatant in biological phase separator after making sludge preliminary sedimentation
It is back to anoxic pond；Though adding somewhat to the nitrification efficiency of aerobic tank, the sludge to flow back from aerobic tank can be carried secretly
More nitrate nitrogen hinders anaerobic phosphorus release, then influences the denitrification of anoxic pond to increase the organic matter consumption of anaerobic pond
PolyP bacteria in reaction and aerobic tank inhales phosphorus reaction；It will lead to secondly, the anti-nitration reaction of anoxic pond is insufficient into aerobic tank
In sewage contain a certain amount of nitrate nitrogen, keep ammonia nitrogen concentration in water outlet high, total nitrogen purification efficiency is low.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides one kind to be based on modified form A2The sewage water treatment method of O technique leads to
It crosses anaerobic ammonia oxidizing bacteria and denitrifying bacterium collective effect completes the removal of total nitrogen, denitrification ability is strong, and does not compete carbon with polyP bacteria
Source and growing space, dephosphorization efficiency is high, solves traditional A2PolyP bacteria and the competition of denitrifying bacterium carbon source and dirt in O technique anaerobic pond
The contradiction of sludge age difference.
In order to solve the above technical problems, the following technical solution is employed by the present invention：
One kind being based on modified form A2The sewage water treatment method of O technique, sewage pass sequentially through anaerobic pond, anoxic pond, aerobic tank
And secondary settling tank, the interior backflow mixed liquor of aerobic tank enter anaerobic pond after mixing with the water inlet of anaerobic pond and are handled, the anaerobism
Pond is inoculated with the anaerobic sludge through taming.
Further, the dominant bacteria in the anaerobic sludge include Anammox bacteria, Anaerolinea,
Bifidobacterium、Clostridium、Methanogenus、Moraxella、Serratia marcescens、
Phycisphaerae and Flavobacteriales.
Further, the Anammox bacteria includes Candidatus Kuenenia, Candidatus
One of Jettenia, Candidatus Brocadia, Scalindua, Anammoxoglobus propionicus or more
Kind.
Further, the sewage water treatment method further includes Bio-electro reactor, the biological membrane electrode reaction
The anode of device is located in aerobic tank, and cathode is located in anoxic pond, the fixed denitrifying bacterium biomembrane of cathode surface, anode and cathode point
Not Tong Guo the external resistance box of copper conductor, formed closed circuit.
Further, the anode is one of nickel, copper, titanium, and the cathode is carbon cloth, graphite carbon felt, active carbon fibre
One of dimension.
Further, the anode is tubular structure, bonds one layer of far infrared irradiation ore in the tubular, transmitting
Far infrared wavelength is 6~14 μm.
Further, the sewage water treatment method, specifically includes following steps：
The sewage water treatment method, specifically includes following steps：
S1, pretreated sewage initially enter anaerobic pond, and with exteenal reflux sludge and the interior reflux from aerobic tank mixes
Liquid carries out Anammox denitrogenation and anaerobic phosphorus release；
The water outlet of S2, anaerobic pond enter anoxic pond, generate H with cathodic electrolytic water2It is electron donor with electronics, carries out anti-nitre
Change denitrogenation；
The water outlet of S3, anoxic pond enter aerobic tank, and anode electrolysis water generates O2, carry out the removal of BOD, nitrification and phosphorus
It absorbs, while a certain amount of mixed liquor is back in anaerobic pond in inner circulating reflux pipe；
The water outlet of S4, aerobic tank flow into secondary settling tank, mud-water separation are carried out in secondary settling tank, a part of sludge of secondary settling tank is through dirt
Mud reflux pump exteenal reflux to anaerobic pond, residual sludge pump to sludge treating system processing, the water outlet of secondary settling tank flows into ultraviolet disinfection
By water outlet measuring tank discharge after canal.
Further, connection aeration pump is aerated outside the aerobic tank, and dissolved oxygen control is in 0.8~1.5mg/ in aerobic tank
Between L.
Further, the reflux ratio to flow back in mixed liquor in step S4 is 300%~500%, is returned outside sludge in step S5
The reflux ratio of stream is 120%~200%.
Further, the anaerobic pond, anoxic pond, aerobic tank hydraulic detention time be respectively：2h,2h,8h.
The beneficial effects of the invention are as follows：
1. anaerobic ammonia oxidizing bacteria is under anaerobic, using ammonia as electron donor, nitrite is electron acceptor, not with poly- phosphorus
Bacterium competes carbon source and growing space, therefore increases the amount of the utilizable organic matter of polyP bacteria, promote polyP bacteria synthesis PHB and
Anaerobic phosphorus release, and then dephosphorization efficiency is improved, solve traditional A2In O technique anaerobic pond polyP bacteria and denitrifying bacterium carbon source compete and
The contradiction of sludge age difference.
2. disappearing by the denitrification of fermentation, anoxic pond and the oxidation of aerobic tank of anaerobic pond and nitrification
Most of organic matter adversely affected to anaerobic ammonia oxidizing bacteria is consumed, the organic matter that backflow mixed liquor contains in aerobic tank is contained
Measure extremely low, after mixing with the water inlet of anaerobic pond, the organic concentration of anaerobic pond is low, Anammox will not be inhibited to react, and detest
The organic acid such as formic acid, acetic acid, propionic acid etc. that aerobe fermentation generates, can be used as the carbon source or electron donor of anaerobic ammonia oxidizing bacteria, promote
The progress of Anammox reaction, is conducive to system denitrogenation.
3. adding Bio-electro reactor, pass through the effect of biological membrane electrode and far infrared, it is ensured that be aerated
In the case that dissolved oxygen amount is low, the oxidation reaction in aerobic tank is still accelerated, and is advantageously reduced aeration quantity, is shortened the reaction time
With reduce sludge yield, energy saving, and dissolved oxygen amount maintains reduced levels is conducive to short distance nitration reaction, and control nitrification is anti-
Should Nitrification Stage, nitrite be Anammox most suitable substrate, using nitrite as electron acceptor, Anammox
Reaction can be carried out quickly, therefore system operation time can be reduced while guaranteeing denitrification effect, and the reduction of runing time also has
Conducive to dephosphorization.
4. the ammonia nitrogen of the nitrate nitrogen, ammonia nitrogen and anaerobic pond of backflow mixed liquor passes through anaerobic ammonia oxidizing bacteria and anti-nitre in aerobic tank
The collective effect for changing bacterium, completes the removal of total nitrogen, is substantially free of nitrogen in the water outlet of anoxic pond, secondly, anaerobic pond is released phosphorus and detested
Anaerobic ammonium oxidation reaction is independent to be carried out, and there is no carbon sources to compete, and therefore, can be promoted to the amount of backflow mixed liquor in aerobic tank
300%~500%, enhance the denitrification ability of system entirety and the amount of sewage treatment.
5. the present invention has good treatment effect to the sewage of low organic matter, high nitrogen phosphorus, effluent quality is high, is discharged COD
Concentration<50mg/L is discharged total nitrogen<15mg/L is discharged phosphate content<0.4mg/L；Reach《Urban wastewater treatment firm pollutant
Discharge standard》The level-one A standard of (GB 18918-2002), when especially handling low C/N sewage, denitrogenation dephosphorizing is good, therefore this
Invention is suitable for the processing for the municipal sewage that carbon source is insufficient, nitrogen and phosphorus content is high.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is of the invention based on modified form A2The flow diagram of the sewage water treatment method of O technique.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, is clearly and completely retouched to the technical solution in embodiment
It states.Obviously, described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Bright embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
One kind being based on modified form A2The sewage water treatment method of O technique, in traditional A2It is improved on the basis of O technique, sewage
Anaerobic pond, anoxic pond, aerobic tank and secondary settling tank are passed sequentially through, after the interior backflow mixed liquor of aerobic tank is mixed with the water inlet of anaerobic pond
It is handled into anaerobic pond, the anaerobic pond is inoculated with the anaerobic sludge through taming.
Dominant bacteria in the anaerobic sludge include Anammox bacteria, Anaerolinea,
Bifidobacterium、Clostridium、Methanogenus、Moraxella、Serratia marcescens、
Phycisphaerae and Flavobacteriales.Anammox bacteria (anaerobic ammonia oxidizing bacteria) under anaerobic with
Ammonia is electron donor, and nitrite is electron acceptor, generates nitrogen, is the major microorganisms of denitrogenation.Anaerolinea (anaerobism
Rope bacterium) degrade carbohydrate and other nutriments (such as amino acid), Clostridium (clostridium) hydrolysis carbohydrate,
Protein is pure and mild organic acid such as acetic acid, lactic acid, amino acid etc., Bifidobacterium (Bifidobacterium) fermentation carbon hydrate
Object is active, and product is mainly acetic acid and lactic acid, and Methanogenus (methanogen) can send out inorganic or organic compound anaerobism
Ferment is converted to methane and carbon dioxide；Therefore Anaerolinea, Clostridium, Bifidobacterium and
The fermentations such as complicated organic matter-carbohydrate, protein and lipid are small molecule by the chemoheterotrophic bacterias such as Methanogenus
Organic matter-ammonium salt, alcohols, organic acid, methane and carbon dioxide etc., be conducive to the oxygenolysis of subsequent aerobic tank, and
There are electron transmissions between Anaerolinea, Clostridium and Methanogenus, can promote the generation of methane etc., favorably
In the anaerobic state for maintaining anaerobic pond, the anaerobism of phosphorus is promoted to discharge.Moraxella (catarrhalis) and Serratia
Marcescens (serratia marcescens) is polyP bacteria, anaerobism and under conditions of having sufficient nutrition, and polyP bacteria is by oppressive induction
It excites polyphosphate intracellular to decompose and generates ATP, while taking in extraneous organic matter, be converted into poly-β-hydroxy butyrate
(PHB) it is stored in into the cell, the phosphate of release also can be used as the phosphorus source of other microbial growths；Under aerobic environment,
PolyP bacteria is released energy by oxygenolysis PHB intracellular, is synthesized for cell, and actively poly- from extraneous huge uptake phosphate
It closes in vivo, polyphosphate is the energy and phosphorus source reservoir of polyP bacteria, by the poly- phosphorus mechanism of polyP bacteria it is found that in sewage
Content of organics is higher, and the PHB synthesized under anaerobic condition is more, and phosphorus discharges more thorough, then the poly- phosphorus amount under aerobic condition is got over
Greatly, dephosphorization efficiency is higher.Phycisphaerae and Flavobacteriales facilitates mud granule by forming reticular structure
Formation, promote the activity and settling property of sludge.
The Anammox bacteria include Candidatus Kuenenia, Candidatus Jettenia,
One of Candidatus Brocadia, Scalindua, Anammoxoglobus propionicus or a variety of.
The sewage water treatment method further includes Bio-electro reactor, the anode position of the Bio-electro reactor
In in aerobic tank, cathode is located in anoxic pond, and the fixed denitrifying bacterium biomembrane of cathode surface, anode and cathode is led by copper respectively
The external resistance box of line forms closed circuit.In aerobic tank, anode electrolysis water generates O2, aerobic environment is formed in anode region,
Promote the further oxidation of organic matter, and provide electron acceptor for nitration reaction, is grown for the nitrobacteria of anode region, with CO2、
CO3 2-、HCO3 -As carbon source, short distance nitration reaction is carried out, meanwhile, it is electrolysed a small amount of O of generation2By oxidation reaction and nitration reaction
Consumption, not will increase the oxygen content of backflow mixed liquor in aerobic tank, and nitrite nitrogen is avoided to be further oxidized to nitrate nitrogen, improve sub-
The accumulation rate of nitrate nitrogen, and not will lead to anaerobism section and the increase of anoxic section oxygen content, maintain the hypoxemia of anaerobism section and anoxic section
State guarantees that Anammox and anti-nitration reaction are gone on smoothly.In anoxic pond, anaerobic pond oxidation is received by water flow first
The electronics and proton of organic matter release, while cathodic electrolytic water generates H2And electronics, hypoxic/anaerobic ring is formed in cathode zone
Border, while electronics, proton and H2Denitrifying bacterium for being fixed on cathode surface utilizes, and carries out denitrification denitrogenation, is conducive to improve
The abundance of autotrophic type denitrifying bacterium, and the competition of denitrifying microorganism and polyP bacteria in carbon source is reduced, while can guarantee low
Carbon source or without carbon source in the case of, anti-nitration reaction can also be gone on smoothly, improve nitric efficiency.
The anode is one of nickel, copper, titanium, and the cathode is carbon cloth, graphite carbon felt, one in activated carbon fibre
Kind.The inert metals such as nickel, copper, titanium conduct electricity very well as anode material and electrode potential are higher than water electrolysis oxygen evolution potential, and not
It is easily oxidized, therefore, generates O in anode electrolysis water2, to promote the oxidation reaction of aerobic tank；Cathode is that performance is stable, surface is thick
Rough porous material, the absorption convenient for denitrifying bacterium biomembrane are fixed.
The anode is tubular structure, bonds one layer of far infrared irradiation ore, the far infrared of transmitting in the tubular
Wavelength is 6~14 μm.The most effective absorption frequency of hydrone is about 6.27 μm, therefore the vibration of far-infrared engergy activation hydrone
Energy level promotes big water clusters to generate resonance, and then destroys the hydrogen bond between hydrone, reduces the degree of association between hydrone, raw
At small-micelle water, increases the dissolved oxygen ability and dissolved oxygen amount of water, be electrolysed the O of generation2It can be fully dissolved in electrode zone water, by oxygen
Change consumption, energy consumption caused by the overflow of oxygen is avoided to increase, and small-micelle water is easier to enter in microbial cell, is supported more
Part, minerals and oxygen are conveyed to cell, promote the progress of intracellular metabolism and respective reaction；Secondly, the vibration of far infrared
Energy and the energy that atriphos hydrolyzes are very close, can form resonance transmitting, promote atriphos hydrolysis energy supply,
On the other hand, on sludge microbe cell membrane there are many Phospholipids, protein and carbohydrate, their effective absorption frequency is also situated between
In within the scope of 4~14 μm of far infrareds, after microorganism absorbs far infrared, the intracorporal molecular entergy level of biology is made to be excited and locate
In compared with high vibration energy level, the activity of the large biological molecules such as nucleic acid protein, hydrolase is activated, polyP bacteria and autotrophic microbe are promoted
Growth and breeding, and then promoting sludge is in particulate form, improves settling property, while under sufficient Oxygen Condition, is accelerated corresponding
The oxidation reaction and nitration reaction of microorganism improve the effect of system denitrogenation dephosphorizing.
The sewage water treatment method, specifically includes following steps：
S1, pretreated sewage initially enter anaerobic pond, and with exteenal reflux sludge and the interior reflux from aerobic tank mixes
Liquid carries out Anammox denitrogenation and anaerobic phosphorus release；
The water outlet of S2, anaerobic pond enter anoxic pond, generate H with cathodic electrolytic water2It is electron donor with electronics, carries out anti-nitre
Change denitrogenation；
The water outlet of S3, anoxic pond enter aerobic tank, and anode electrolysis water generates O2, carry out the removal of BOD, nitrification and phosphorus
It absorbs, while a certain amount of mixed liquor is back in anaerobic pond in inner circulating reflux pipe；
The water outlet of S4, aerobic tank flow into secondary settling tank, mud-water separation are carried out in secondary settling tank, a part of sludge of secondary settling tank is through dirt
Mud reflux pump exteenal reflux to anaerobic pond, residual sludge pump to sludge treating system processing, the water outlet of secondary settling tank flows into ultraviolet disinfection
By water outlet measuring tank discharge after canal.
The main function in middle each unit pond of the invention：
(1) pretreatment removes float impurity and large particulate matter, such as the processing of coarse rack well, fine fack well or setting pot；
Coarse rack well can remove the pollution impurity of large volume, and fine fack well can remove soft twister, float impurity and large particulate matter,
To protect follow-up work water pump service life and reduce system processing workload, setting pot can will be under the precipitate in water
Come.
(2) anaerobism that anaerobic pond carries out phosphorus discharges, the fermentation with organic matter, i.e.,：By complicated hydrolysis of organic matter at
The ammoniation of the organic matter and organic matter of small molecule, while the nitrate nitrogen of aerobic tank reflux is in the effect of anaerobic ammonia oxidizing bacteria
Under, using ammonia as electron donor, nitrite is electron acceptor, generates nitrogen, removes ammonia nitrogen, Anammox reaction equation
For：
1NH4 ++1.32NO2 -+0.066HCO3 -+0.13H+→1.02N2+0.26NO3 -+0.066CH2O0.5N0.15
(3) since Anammox reaction can generate nitrate, anaerobic ammonia oxidizing bacteria cannot completely remove total in sewage
Therefore nitrogen will flow into anoxic pond containing the waste water of low amounts nitrate, be removed by denitrification, be remarkably improved total nitrogen removal
Rate.
(4) after sewage enters aerobic tank, organic matter is further aoxidized by microorganism, and BOD continues to reduce；Organic nitrogen is by ammonification
Then it being nitrified, ammonia nitrogen concentration is remarkably decreased, and with the progress of short distance nitration, nitrite nitrogen concentration increases；Phosphorus is with poly- phosphorus
The excess ingestion of bacterium and forms high phosphorus concentration sludge also with the decline of faster rate, with excess sludge discharge system, from
And achieve the purpose that dephosphorization.
Connection aeration pump is aerated outside the aerobic tank, and dissolved oxygen control is between 0.8~1.5mg/L in aerobic tank.
The reflux ratio to flow back in mixed liquor in the step S4 is 300%~500%, and sludge exteenal reflux returns in step S5
Stream is than being 120%~200%.
The anaerobic pond, anoxic pond, aerobic tank hydraulic detention time be respectively：2h,2h,8h.
Embodiment 1
One kind being based on modified form A2The sewage water treatment method of O technique, in traditional A2It is improved on the basis of O technique, sewage
Anaerobic pond, anoxic pond, aerobic tank and secondary settling tank are passed sequentially through, the anaerobic pond is inoculated with the anaerobic sludge through taming, described to detest
Dominant bacteria in oxygen sludge include Anammox bacteria, Anaerolinea, Bifidobacterium, Clostridium,
Methanogenus, Moraxella, Serratia marcescens, Phycisphaerae and Flavobacteriales, institute
Stating Anammox bacteria includes Candidatus Kuenenia, Scalindua, Anammoxoglobus
Propionicus, and Bio-electro reactor is equipped in aerobic tank and anoxic pond, anode uses the nickel electrode of tubular, cylinder
One layer of bonding can radiate the jade of 6~14 mum wavelength far infrareds in shape, be located in aerobic tank, and cathode is using activated carbon fibre electricity
Pole, the fixed denitrifying bacterium biomembrane in surface, anode and cathode pass through the external resistance box of copper conductor respectively, form closed circuit.
The sewage water treatment method, specifically includes following steps：
S1, pretreated sewage initially enter anaerobic pond, and with exteenal reflux sludge and the interior reflux from aerobic tank mixes
Liquid mixing, hydraulic detention time 2h carry out Anammox denitrogenation and anaerobic phosphorus release；
The water outlet of S2, anaerobic pond enter anoxic pond, and hydraulic detention time 2h generates H with cathodic electrolytic water2It is electricity with electronics
Sub- donor carries out denitrification denitrogenation；
The water outlet of S3, anoxic pond enter aerobic tank, hydraulic detention time 8h, and anode electrolysis water generates O2, carry out going for BOD
It removes, nitrify and the absorption of phosphorus, while a certain amount of mixed liquor is back in anaerobic pond in inner circulating reflux pipe；It is preferred good
Between 1~1.5mg/L, the reflux ratio to flow back in mixed liquor is 300% for dissolved oxygen control in oxygen pond；
The water outlet of S4, aerobic tank flow into secondary settling tank, mud-water separation are carried out in secondary settling tank, a part of sludge of secondary settling tank is through dirt
Mud reflux pump exteenal reflux to anaerobic pond, the reflux ratio of sludge exteenal reflux is 120%, at residual sludge pump to sludge treating system
Reason, the water outlet of secondary settling tank flow into after ultraviolet disinfection canal by water outlet measuring tank discharge.
In the present embodiment, average COD content is 342.3mg/L in municipal sewage water inlet, and average ammonia-nitrogen content is
17.61mg/L, average total nitrogen content is 40.43mg/L, and total phosphorus content 4.54mg/L is handled, and water outlet COD content is
25.7mg/L, ammonia-nitrogen content 2.6mg/L, total nitrogen content 12.8mg/L, total phosphorus content 0.2mg/L reach《Town sewage
Treatment plant's pollutant emission standard》The level-one A standard of (GB 18918-2002).
Embodiment 2
One kind being based on modified form A2The sewage water treatment method of O technique improves, sewage on the basis of traditional AO technique
Anaerobic pond, anoxic pond, aerobic tank and secondary settling tank are passed sequentially through, the anaerobic pond is inoculated with the anaerobic sludge through taming, described to detest
Dominant bacteria in oxygen sludge include Anammox bacteria, Anaerolinea, Bifidobacterium, Clostridium,
Methanogenus, Moraxella, Serratia marcescens, Phycisphaerae and Flavobacteriales, institute
Stating Anammox bacteria includes Candidatus Kuenenia, Candidatus Brocadia, Anammoxoglobus
Propionicus, and Bio-electro reactor is equipped in aerobic tank and anoxic pond, anode uses the copper electrode of tubular, cylinder
One layer of bonding can radiate the charcoal of 6~14 mum wavelength far infrareds in shape, be located in aerobic tank, and cathode is using graphite carbon felt electricity
Pole, the fixed denitrifying bacterium biomembrane in surface, is located in anoxic pond, anode and cathode passes through the external resistance box of copper conductor, shape respectively
At closed circuit.
The sewage water treatment method, specifically includes following steps：
S1, pretreated sewage initially enter anaerobic pond, and with exteenal reflux sludge and the interior reflux from aerobic tank mixes
Liquid mixing, hydraulic detention time 2h carry out Anammox denitrogenation and anaerobic phosphorus release；
The water outlet of S2, anaerobic pond enter anoxic pond, and hydraulic detention time 2h generates H with cathodic electrolytic water2It is electricity with electronics
Sub- donor carries out denitrification denitrogenation；
The water outlet of S3, anoxic pond enter aerobic tank, hydraulic detention time 8h, and anode electrolysis water generates O2, carry out going for BOD
It removes, nitrify and the absorption of phosphorus, while a certain amount of mixed liquor is back in anaerobic pond in inner circulating reflux pipe；It is preferred good
Between 0.9~1.2mg/L, the reflux ratio to flow back in mixed liquor is 400% for dissolved oxygen control in oxygen pond；
The water outlet of S4, aerobic tank flow into secondary settling tank, mud-water separation are carried out in secondary settling tank, a part of sludge of secondary settling tank is through dirt
Mud reflux pump exteenal reflux to anaerobic pond, the reflux ratio of sludge exteenal reflux is 160%, at residual sludge pump to sludge treating system
Reason, the water outlet of secondary settling tank flow into after ultraviolet disinfection canal by water outlet measuring tank discharge.
In the present embodiment, average COD content is 245.3mg/L in municipal sewage water inlet, and average ammonia-nitrogen content is 30.5mg/
L, average total nitrogen content is 39.2mg/L, and total phosphorus content 7.7mg/L is handled, and water outlet COD content is 24.6mg/L, ammonia nitrogen
Content is 1.8mg/L, and total nitrogen content 10.2mg/L, total phosphorus content 0.1mg/L reach《Urban wastewater treatment firm pollutant
Discharge standard》The level-one A standard of (GB 18918-2002).
Embodiment 3
One kind being based on modified form A2The sewage water treatment method of O technique, in traditional A2It is improved on the basis of O technique, sewage
Anaerobic pond, anoxic pond, aerobic tank and secondary settling tank are passed sequentially through, the anaerobic pond is inoculated with the anaerobic sludge through taming, described to detest
Dominant bacteria in oxygen sludge include Anammox bacteria, Anaerolinea, Bifidobacterium, Clostridium,
Methanogenus, Moraxella, Serratia marcescens, Phycisphaerae and Flavobacteriales, institute
Stating Anammox bacteria includes Candidatus Jettenia, Candidatus Brocadia, Scalindua, and good
Bio-electro reactor is equipped in oxygen pond and anoxic pond, anode uses the Ti electrode of tubular, and one layer of bonding can spoke in tubular
The far-infrared ceramic of the far infrared of 6~14 mum wavelengths is penetrated, is located in aerobic tank, cathode uses carbon cloth electrode, and surface is fixed anti-
Nitrifier biomembrane is located in anoxic pond, and anode and cathode passes through the external resistance box of copper conductor respectively, forms closed circuit.
The sewage water treatment method, specifically includes following steps：
S1, pretreated sewage initially enter anaerobic pond, and with exteenal reflux sludge and the interior reflux from aerobic tank mixes
Liquid mixing, hydraulic detention time 2h carry out Anammox denitrogenation and anaerobic phosphorus release；
The water outlet of S2, anaerobic pond enter anoxic pond, and hydraulic detention time 2h generates H with cathodic electrolytic water2It is electricity with electronics
Sub- donor carries out denitrification denitrogenation；
The water outlet of S3, anoxic pond enter aerobic tank, hydraulic detention time 8h, and anode electrolysis water generates O2, carry out going for BOD
It removes, nitrify and the absorption of phosphorus, while a certain amount of mixed liquor is back in anaerobic pond in inner circulating reflux pipe；It is preferred good
Between 0.8~1.0mg/L, the reflux ratio to flow back in mixed liquor is 500% for dissolved oxygen control in oxygen pond；
The water outlet of S4, aerobic tank flow into secondary settling tank, mud-water separation are carried out in secondary settling tank, a part of sludge of secondary settling tank is through dirt
Mud reflux pump exteenal reflux to anaerobic pond, the reflux ratio of sludge exteenal reflux is 200%, at residual sludge pump to sludge treating system
Reason, the water outlet of secondary settling tank flow into after ultraviolet disinfection canal by water outlet measuring tank discharge.
In the present embodiment, average COD content is 302.5mg/L in municipal sewage water inlet, and average ammonia-nitrogen content is 30.7mg/
L, average total nitrogen content is 39.8mg/L, and total phosphorus content 5.6mg/L is handled, and water outlet COD content is 31.2mg/L, ammonia nitrogen
Content is 2.8mg/L, and total nitrogen content 11.3mg/L, total phosphorus content 0.2mg/L reach《Urban wastewater treatment firm pollutant
Discharge standard》The level-one A standard of (GB 18918-2002).
Claims (10)
1. one kind is based on modified form A2The sewage water treatment method of O technique, which is characterized in that sewage passes sequentially through anaerobic pond, anoxic
Pond, aerobic tank and secondary settling tank, the interior backflow mixed liquor of aerobic tank enter anaerobic pond after mixing with the water inlet of anaerobic pond and are handled,
The anaerobic pond is inoculated with the anaerobic sludge through taming.
2. sewage water treatment method according to claim 1, which is characterized in that the dominant bacteria in the anaerobic sludge includes
Anammox bacteria、Anaerolinea、Bifidobacterium、Clostridium、Methanogenus、
Moraxella, Serratia marcescens, Phycisphaerae and Flavobacteriales.
3. sewage water treatment method according to claim 2, which is characterized in that the Anammox bacteria includes
Candidatus Kuenenia、Candidatus Jettenia、Candidatus Brocadia、Scalindua、
One of Anammoxoglobus propionicus or a variety of.
4. sewage water treatment method according to claim 1, which is characterized in that it further include Bio-electro reactor, it is described
The anode of Bio-electro reactor is located in aerobic tank, and cathode is located in anoxic pond, the fixed denitrifying bacterium biology of cathode surface
Film, anode and cathode pass through the external resistance box of copper conductor respectively, form closed circuit.
5. sewage water treatment method according to claim 4, which is characterized in that the anode be one of nickel, copper, titanium,
The cathode is one of carbon cloth, graphite carbon felt, activated carbon fibre.
6. sewage water treatment method according to claim 4, which is characterized in that the anode is tubular structure, the tubular
One layer of far infrared irradiation ore of interior bonding, the far infrared wavelength of transmitting are 6~14 μm.
7. sewage water treatment method according to claim 4, which is characterized in that the sewage water treatment method specifically includes
Following steps：
S1, pretreated sewage initially enter anaerobic pond, with exteenal reflux sludge and the interior backflow mixed liquor from aerobic tank into
The denitrogenation of row Anammox and anaerobic phosphorus release；
The water outlet of S2, anaerobic pond enter anoxic pond, generate H with cathodic electrolytic water2It is electron donor with electronics, it is de- carries out denitrification
Nitrogen；
The water outlet of S3, anoxic pond enter aerobic tank, and anode electrolysis water generates O2, the absorption of the removal of BOD, nitrification and phosphorus is carried out,
A certain amount of mixed liquor is back in anaerobic pond in inner circulating reflux pipe simultaneously；
The water outlet of S4, aerobic tank flow into secondary settling tank, and mud-water separation is carried out in secondary settling tank, and a part of sludge of secondary settling tank is returned through sludge
Stream pump exteenal reflux to anaerobic pond, residual sludge pump to sludge treating system is handled, after the water outlet of secondary settling tank flows into ultraviolet disinfection canal
By water outlet measuring tank discharge.
8. sewage water treatment method according to claim 7, which is characterized in that connection aeration pump exposes outside the aerobic tank
Gas, dissolved oxygen control is between 0.8~1.5mg/L in aerobic tank.
9. sewage water treatment method according to claim 7, which is characterized in that the reflux ratio to flow back in mixed liquor in step S4
It is 300%~500%, the reflux ratio of sludge exteenal reflux is 120%~200% in step S5.
10. sewage water treatment method according to claim 7, which is characterized in that the anaerobic pond, anoxic pond, aerobic tank
Hydraulic detention time is respectively：2h,2h,8h.
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| CN110627320A (en) * | 2019-09-26 | 2019-12-31 | 北京工业大学 | Novel wastewater treatment combined device and process based on physical-chemical-biological method |
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| CN111807611A (en) * | 2020-06-20 | 2020-10-23 | 山东三加环保新材料有限公司 | A2O process-based sewage nitrogen removal method |
| CN112794444A (en) * | 2020-12-23 | 2021-05-14 | 联合环境技术(天津)有限公司 | A2Optimization method of reflux ratio of O biological nitrogen and phosphorus removal |
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| CN110627320A (en) * | 2019-09-26 | 2019-12-31 | 北京工业大学 | Novel wastewater treatment combined device and process based on physical-chemical-biological method |
| CN110627320B (en) * | 2019-09-26 | 2022-01-28 | 北京工业大学 | Wastewater treatment combined device and process based on physical-chemical-biological method |
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| CN112794444A (en) * | 2020-12-23 | 2021-05-14 | 联合环境技术(天津)有限公司 | A2Optimization method of reflux ratio of O biological nitrogen and phosphorus removal |
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| CN113620525A (en) * | 2021-08-16 | 2021-11-09 | 华夏碧水环保科技有限公司 | Integrated device suitable for low carbon nitrogen ratio domestic sewage treatment |
| CN113955851A (en) * | 2021-08-18 | 2022-01-21 | 北京工业大学 | Post-selection anoxic/aerobic internal carbon source reinforced municipal sewage deep denitrification device and method |
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