CN105884028B - The apparatus and method of continuous flow municipal sewage short distance nitration Anammox coupling denitrification dephosphorization - Google Patents
The apparatus and method of continuous flow municipal sewage short distance nitration Anammox coupling denitrification dephosphorization Download PDFInfo
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- 239000010865 sewage Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000006396 nitration reaction Methods 0.000 title claims description 36
- 230000008878 coupling Effects 0.000 title claims description 15
- 238000010168 coupling process Methods 0.000 title claims description 15
- 238000005859 coupling reaction Methods 0.000 title claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 55
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 55
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 40
- 239000011574 phosphorus Substances 0.000 claims abstract description 40
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 16
- 239000001301 oxygen Substances 0.000 claims abstract description 16
- 239000000945 filler Substances 0.000 claims abstract description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 15
- 238000005273 aeration Methods 0.000 claims abstract description 11
- 238000004062 sedimentation Methods 0.000 claims abstract description 11
- 238000010521 absorption reaction Methods 0.000 claims abstract description 3
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims description 45
- 239000010802 sludge Substances 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 21
- 238000010992 reflux Methods 0.000 claims description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 239000005416 organic matter Substances 0.000 claims description 12
- 241001453382 Nitrosomonadales Species 0.000 claims description 11
- 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 claims description 8
- 239000010841 municipal wastewater Substances 0.000 claims description 7
- 238000004065 wastewater treatment Methods 0.000 claims description 7
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 6
- 206010021143 Hypoxia Diseases 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 230000007954 hypoxia Effects 0.000 claims description 4
- 238000011081 inoculation Methods 0.000 claims description 3
- 239000003446 ligand Substances 0.000 claims description 3
- 238000010899 nucleation Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 14
- 241000894006 Bacteria Species 0.000 abstract description 12
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 22
- 229910019142 PO4 Inorganic materials 0.000 description 10
- 238000007254 oxidation reaction Methods 0.000 description 9
- 229910002651 NO3 Inorganic materials 0.000 description 8
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 8
- 229910021529 ammonia Inorganic materials 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 8
- 239000010452 phosphate Substances 0.000 description 8
- 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 3
- 238000012851 eutrophication Methods 0.000 description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 3
- 230000001546 nitrifying effect Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000001651 autotrophic effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- PDNNQADNLPRFPG-UHFFFAOYSA-N N.[O] Chemical compound N.[O] PDNNQADNLPRFPG-UHFFFAOYSA-N 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- 229920000037 Polyproline Polymers 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
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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
- C02F3/302—Nitrification and denitrification treatment
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
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- Biodiversity & Conservation Biology (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
连续流城市污水短程硝化厌氧氨氧化耦合反硝化除磷的装置与方法，属于污水处理领域。该装置主要有污水原水箱、多级缺/好氧格组成的生物脱氮除磷AA/O反应器、沉淀池组成。生活污水由原水箱进入生物脱氮除磷AA/O反应器的厌氧段，厌氧段的反硝化聚磷菌进行厌氧释磷反应后进入缺氧段再进行反硝化吸磷反应，然后进入好氧段发生部分短程硝化反应，再进入缺氧段，固着在填料上的厌氧氨氧化菌利用NH4 +和NO2 ‑发生厌氧氨氧化反应，再依次进入后续的好氧段与缺氧段，重复上述过程，在好/缺氧段交替过程中反硝化聚磷菌继续吸磷，最终实现去除水中氮、磷的目的。此发明在不需外加碳源、低氧曝气的条件下进行，具有节能降耗、同步脱氮除磷的特点。
The invention discloses a device and method for short-path nitrification and anammox coupled denitrification for phosphorus removal of continuous flow urban sewage, belonging to the field of sewage treatment. The device is mainly composed of a sewage raw water tank, a biological denitrification and phosphorus removal AA/O reactor composed of multi-stage anoxic/aerobic grids, and a sedimentation tank. The domestic sewage enters the anaerobic section of the biological denitrification and phosphorus removal AA/O reactor from the raw water tank. The denitrifying phosphorus accumulating bacteria in the anaerobic section undergo anaerobic phosphorus release reaction and then enter the anoxic section for denitrification and phosphorus absorption reaction. Partial short-range nitrification occurs in the aerobic section, and then enters the anoxic section. The anammox bacteria immobilized on the filler use NH 4 + and NO 2 ‑ to undergo anammox reaction, and then enter the subsequent aerobic section and In the anoxic section, the above process is repeated, and the denitrifying phosphorus-accumulating bacteria continue to absorb phosphorus in the alternating process of the good/anoxic section, and finally achieve the purpose of removing nitrogen and phosphorus in the water. The invention is carried out under the conditions of no external carbon source and low-oxygen aeration, and has the characteristics of energy saving and consumption reduction, and simultaneous denitrification and dephosphorization.
Description
Technical field
The present invention relates to the method and apparatus of continuous flow municipal sewage short distance nitration Anammox coupling denitrification dephosphorization,
Belong to sewage treatment field.
Background technique
As the improvement of people's living standards, the phenomenon that water eutrophication gets worse, this is primarily due to a large amount of richnesses
The sanitary sewage and industrial wastewater discharge of the elements such as nitrogenous, phosphorus have exceeded self-purification of water energy into natural waters such as river, lakes
Power.Water quality deteriorates, and causes serious influence to the production and living of people and sustainable development.Therefore, water body richness is sought
Feedingization problem has caused extensive concern and has paid attention to.In recent years, China has put into substantial contribution and has administered the water such as Taihu Lake, Dian Chi
The eutrophication of body.However, still very difficult to be restored to the situation before pollution.Solve the problems, such as the root of water eutrophication
This method is to be discharged into natural water again after carrying out advanced nitrogen dephosphorization to sewage.Currently, how to be removed in realization efficient denitrification
Energy consumption, expense are reduced while phosphorus, are of great significance to Sewage Biological Treatment.
Short distance nitration is under aerobic condition, and for ammonia oxidation bacteria by ammonium oxidation at nitrite nitrogen, Anammox is with ammonia
Nitrogen is electron donor, and nitrite nitrogen is electron acceptor, converts two kinds of nitrogens to simultaneously the biological respinse mistake of nitrogen and nitrate nitrogen
Journey.The energy that the process generates is survived under anaerobic for anaerobic ammonia oxidizing bacteria.Anammox is the microorganism of autotrophy
Process does not need to add organic matter to maintain denitrification, and sludge yield is low.Short distance nitration and anaerobic ammonia oxidation process, are suitable for
The processing of high ammonia-nitrogen wastewater and low COD/N stain disease.But short distance nitration anaerobic ammonia oxidation process can also generate about water inlet total nitrogen
The nitrate nitrogen of concentration 10%, this not only increases water outlet total nitrogen concentration, also will cause the wasting of resources.
The principle of denitrification dephosphorization is then that Denitrifying Phosphate Accumulating Organisms are synthesized using the organic matter in raw water under anaerobic
Internal carbon source PHA, while intracorporal P elements are discharged, and under anoxic conditions, intracorporal PHA is decomposed by electron acceptor of nitrate
Excessive suction phosphorus reaction is completed, " carbon is dual-purpose " process is completed, to realize the purpose for removing nitrogen, phosphorus from water simultaneously.Anti- nitre
The it is proposed for changing dephosphorization process solves polyP bacteria and denitrifying bacterium in the existing competition contradiction due to carbon source in urban sewage deficiency.
Continuous flow municipal sewage short distance nitration Anammox coupling denitrification dephosphorization process is by denitrification dephosphorization and short distance
Nitrifying anaerobic ammonia oxidation organically combines, and realizes the purpose of sewage synchronous denitrification dephosphorizing.Denitrifying Phosphate Accumulating Organisms utilize dirt
Organic matter in water reacts the product nitrate nitrogen generated with Anammox and carries out denitrification dephosphorization, completes " carbon is dual-purpose " mistake
Journey realizes the efficient utilization of carbon source, saves the expense for adding outer carbon source, it is therefore prevented that suppression of the organic matter to anaerobic ammonia oxidizing bacteria
System, while the product nitrate nitrogen that Anammox reaction generates being removed in anoxic section denitrifying phosphorus uptake, efficiently simultaneously using resource
Reduce effluent nitrate-nitrogen concentration.Therefore, continuous flow municipal sewage short distance nitration Anammox coupling denitrification dephosphorization process is suitable
The low C/N in China is closed than city domestic sewage status, is advantageously implemented the synchronous advanced nitrogen dephosphorization of city domestic sewage.
Summary of the invention
The object of the invention is to remove sewage in nitrogen and phosphorus element while reduce municipal wastewater treatment plant energy consumption with
Expense, and propose the method and apparatus of continuous flow municipal sewage short distance nitration Anammox coupling denitrification dephosphorization.The dress
In setting, sanitary sewage is entered the anaerobism section of biological carbon and phosphorous removal AA/O reactor by raw water box first, and the denitrification of anaerobism section is poly-
Phosphorus bacterium carries out anaerobic phosphorus release using PHA in the organic synthesis body in sanitary sewage；Then mixed liquor enters anoxic section,
Denitrifying Phosphate Accumulating Organisms recycle the NO in nitrification liquid reflux3 -Denitrifying phosphorus uptake is carried out as electron acceptor, subsequently into aerobic section
Short distance nitration reaction in part i.e. short distance nitration bacterium occurs by part NH4 +It is converted into NO2 -, anoxic section is subsequently entered, filler is anchored at
On anaerobic ammonia oxidizing bacteria utilize NH in mixed liquor4 +And NO2 -Anammox reaction occurs and generates N2And NO3 -, then again successively
Into subsequent aerobic section and anoxic section, is replaced by short distance nitration with Anammox and realize autotrophic denitrification.It is anti-in good/anoxic
Denitrifying Phosphate Accumulating Organisms in area's alternation procedure are answered to continue to inhale phosphorus, it is final to realize the purpose for removing nitrogen, phosphorus in water removal.The method and device exist
Short distance nitration is realized under the conditions of low-oxygen aeration, good anoxic are alternate, while effectively withholding enrichment anaerobic ammonia oxidizing bacteria using filler,
Biological carbon and phosphorous removal effect is effectively increased in the case where not additional carbon.
The device of continuous flow municipal sewage short distance nitration Anammox coupling denitrification dephosphorization, it is characterised in that: including
Municipal sewage raw water box (1), biological carbon and phosphorous removal AA/O reactor (2), the sedimentation basin (3) of sequential connection；Municipal sewage raw water
Case (1) includes overflow pipe (1.1) and blow-down pipe (1.2)；Municipal sewage raw water box (1) passes through water inlet pipe (2.1) and intake pump
(2.2) it is connected with biological carbon and phosphorous removal AA/O reactor (2)；Biological carbon and phosphorous removal AA/O reactor (2) includes 9 cell compartments, is pressed
Water (flow) direction is divided into a lattice anaerobism section, two lattice anoxic sections, three lattice and replaces aerobic/anoxic section, and each cell compartment is by pressing water flow side
The generation of short flow phenomenon is prevented to staggered water flow hole connection up and down；Aerobic section (2.5) is using air compressor machine (2.10) and is aerated
Manage (2.9), aeration head (2.8) Constant hypoxia aeration；Anoxic section (2.6) is placed with the filler (2.11) of attachment anaerobic ammonia oxidizing bacteria；
Every lattice of biological carbon and phosphorous removal AA/O reactor (2) are respectively equipped with blender (2.7)；Biological carbon and phosphorous removal AA/O reactor (2)
It is connect by outlet pipe (3.1) with sedimentation basin (3)；Mud return line (3.2) and sludge reflux pump (3.3) and biological carbon and phosphorous removal
First lattice anaerobism section (2.3) of AA/O reactor (2) connects, and sedimentation basin is equipped with mud discharging pipe (3.6)；Nitrification liquid return pipe
(3.4) it is connect with nitrification liquid reflux pump (3.5) with the second lattice anoxic section (2.4) of AA/O reactor (2).
Process flow of the municipal sewage in this device are as follows: sanitary sewage enters biological carbon and phosphorous removal AA/O by raw water box first
The anaerobism section of reactor, the Denitrifying Phosphate Accumulating Organisms of anaerobism section carry out anaerobism using the organic synthesis PHA in sanitary sewage
Release phosphorus；Then mixed liquor enters anoxic section, and Denitrifying Phosphate Accumulating Organisms recycle the NO in nitrification liquid effluent recycling3 -As electron acceptor
Denitrifying phosphorus uptake is carried out to remove nitrate nitrogen in phosphorus and nitrification liquid reflux in sewage；It is short that part occurs subsequently into aerobic section
Journey nitration reaction, that is, short distance nitration bacterium is by part NH4 +It is converted into NO2 -, anoxic section is subsequently entered, the anaerobism ammonia on filler is anchored at
Oxidation bacteria utilizes the NH in mixed liquor4 +And NO2 -Anammox reaction occurs and generates N2And NO3 -, finally sequentially enter again subsequent
Aerobic section and anoxic section, biology autotrophic denitrification is alternately realized by short distance nitration and Anammox；It is anti-in good/anoxic
Denitrifying Phosphate Accumulating Organisms in area's alternation procedure are answered to continue to inhale phosphorus, it is final to realize the purpose for synchronizing nitrogen, phosphorus in water removal.
The present invention provides the methods and dress of continuous flow municipal sewage short distance nitration Anammox coupling denitrification dephosphorization
It sets, it is characterised in that including the following contents:
1) startup stage: inoculation municipal wastewater treatment plant denitrification dephosphorization sludge is in biological carbon and phosphorous removal AA/O reactor (2)
Anaerobism section (2.3) and anoxic section (2.4)；By the short distance nitration sludge seeding of municipal wastewater treatment plant it is good in AA/O reactor (2)/
The alternate aerobic section of anoxic (2.5) keeps the sludge concentration of anaerobism section (2.3), anoxic section (2.4) and aerobic section (2.5) to exist
2500-4000mg/L；It is good/scarce in biological carbon and phosphorous removal AA/O reactor (2) that the filler for being enriched with anaerobic ammonia oxidizing bacteria is invested in
The alternate anoxic section (2.6) of oxygen, filler packing ratio are 30%-35%.In this stage, municipal sewage presses water (flow) direction successively up and down
By the anaerobism section of biological carbon and phosphorous removal AA/O reactor, anoxic section and good/anoxic alternate area, anaerobic phosphorus release, good is carried out respectively
Oxygen is inhaled phosphorus and is reacted with short distance nitration Anammox, by organic matter, ammonia nitrogen and the phosphorus ligands in sewage.Work as biological carbon and phosphorous removal
Organic matter, total nitrogen and the total tp removal rate of AA/O reactor respectively reach 80%, 80%, 95% or more, i.e., it is believed that continuous flow
Municipal sewage short distance nitration Anammox coupling denitrification dephosphorization system starts successfully.
2) normal operating phase:
(1) by the sludge reflux of biological carbon and phosphorous removal AA/O reactor (2) to the first lattice anaerobism section (2.3), sludge reflux
Than for 100%-200%, to maintain the anaerobism section (2.3) of biological carbon and phosphorous removal AA/O reactor (2), anoxic section (2.4) to become reconciled
Oxygen section (2.5) sludge concentration is in 2500-3000mg/L.
(2) by the water outlet of biological carbon and phosphorous removal AA/O reactor nitrification liquid return pipe (3.4) and nitrification liquid reflux pump
(3.5) the second lattice anoxic section (2.4) of AA/O reactor (2) is flowed back into, mixed liquid recycle ratio 100%-300% works as water outlet
When middle nitrate is greater than 10mg/L, mixed liquid recycle ratio is set as 300%；Hydraulic detention time is 8-10h；Sludge age is
10-12d.Continuous operation biological carbon and phosphorous removal AA/O reactor assembly, as COD≤50mg/L, NH in secondary clarifier effluent water quality4 +-N
≤ 5mg/L, PO4 3-After-P≤0.5mg/L and stabilization maintain 15-20 days, that is, think that system has reached stable state.
(3) anaerobic phosphorus release area (2.3) volume: the area anoxic denitrification Xi Lin (2.4) volume: short distance nitration Anammox is good
Oxygen (2.5)/anoxic (2.6) alternate area volume is 1:2:6.
(4) aerobic section (2.5) Dissolved Oxygen concentration Control of aerobic/anoxic section alternate area is in 0.4-0.8mg/L, when in water outlet
NH4 +When-N concentration is greater than 5mg/L, increase aerobic section (2.4) dissolved oxygen concentration to 0.8-1.5mg/L.
The method and apparatus of continuous flow municipal sewage short distance nitration Anammox coupling denitrification dephosphorization of the present invention, and it is existing
There is technique to compare to have the advantage that
(1) organic matter in municipal sewage is sufficiently utilized by Denitrifying Phosphate Accumulating Organisms, reduces subsequent organic matter to anaerobism ammonia
The part nitrate nitrogen denitrification that Anammox reaction generates is removed while dephosphorization, completes " a carbon by the influence of oxidation bacteria
It is dual-purpose " process, realize the purpose of synchronous denitrification dephosphorizing.
(2) the aerobic short distance nitration area Dissolved Oxygen concentration Control of biological carbon and phosphorous removal AA/O reactor is in 0.4-0.8mg/L,
60% aeration quantity is saved relative to tradition nitrification, subsequent Anammox reaction does not need carbon source, and anaerobism ammonia oxygen
Change bacterium slow growth, sludge yield is low, so reducing costs in denitrification process.
(3) good/hypoxia response area alternating, is conducive to going on smoothly for short distance nitration and Anammox, effluent recycling is extremely
Anoxic section, makes in water outlet that ammonia nitrogen, nitrite nitrogen, nitrate are lower, ensure that the quality of water outlet.
(4) anaerobic ammonia oxidizing bacteria is fixed on filler, can control sludge age by spoil disposal to eluriate NOB, to be conducive to
Further maintain city domestic sewage short distance nitration.
Detailed description of the invention
Fig. 1 is the apparatus structure schematic diagram of continuous flow municipal sewage short distance nitration Anammox coupling denitrification dephosphorization.
In Fig. 1: 1 is raw water water tank, and 2 be biological carbon and phosphorous removal AA/O reactor, and 3 be sedimentation basin, and 1.1 overflow for raw water water tank
Flow tube, 1.2 be raw water water tank blow-down pipe, and 2.1 be water inlet pipe, and 2.2 be intake pump, and 2.3 be anaerobism section, and 2.4 be anoxic section, 2.5
It is anoxic section for aerobic section, 2.6,2.7 be blender, and 2.8 be aeration head, and 2.9 be aeration tube, and 2.10 be air compressor machine, and 2.11 are
Filler, 3.1 be outlet pipe, and 3.2 be mud return line, and 3.3 be sludge reflux pump, and 3.4 be effluent recycling pipe, and 3.5 be to be discharged back
Stream pump, 3.6 be mud discharging pipe.
Specific embodiment:
The device of continuous flow municipal sewage short distance nitration Anammox coupling denitrification dephosphorization, it is characterised in that: including
Municipal sewage raw water box (1), biological carbon and phosphorous removal AA/O reactor (2), the sedimentation basin (3) of sequential connection；Municipal sewage raw water
Case (1) includes overflow pipe (1.1) and blow-down pipe (1.2)；Municipal sewage raw water box (1) passes through water inlet pipe (2.1) and intake pump
(2.2) it is connected with biological carbon and phosphorous removal AA/O reactor (2)；Biological carbon and phosphorous removal AA/O reactor (2) includes 9 cell compartments, is pressed
Water (flow) direction is divided into a lattice anaerobism section, two lattice anoxic sections, three lattice and replaces aerobic/anoxic section, and each cell compartment is by pressing water flow side
The generation of short flow phenomenon is prevented to staggered water flow hole connection up and down；Aerobic section (2.5) is using air compressor machine (2.10) and is aerated
Manage (2.9), aeration head (2.8) Constant hypoxia aeration；Anoxic section (2.6) is placed with the filler (2.11) of attachment anaerobic ammonia oxidizing bacteria；
Every lattice of biological carbon and phosphorous removal AA/O reactor (2) are respectively equipped with blender (2.7)；Biological carbon and phosphorous removal AA/O reactor (2)
It is connect by outlet pipe (3.1) with sedimentation basin (3)；Mud return line (3.2) and sludge reflux pump (3.3) and biological carbon and phosphorous removal
First lattice anaerobism section (2.3) of AA/O reactor (2) connects, and sedimentation basin is equipped with mud discharging pipe (3.6)；Nitrification liquid return pipe
(3.4) it is connect with nitrification liquid reflux pump (3.5) with the second lattice anoxic section (2.4) of AA/O reactor (2).
It is process object with Certain University in Beijing dependents' district septic tank wastewater, specific water quality is as follows: COD 150-300mg/L,
NH4 +For 40-85mg/L, NO3 -≤ 1.0mg/L, NO2 -≤ 0.5mg/L, phosphorus 5-10mg/L.Pilot system is as shown in Figure 1, biology
Denitrogenation dephosphorizing AA/O reactor dischargeable capacity 54L, is divided into 9 lattice, every lattice dischargeable capacity 6L, and reactor is all made of organic glass system
At.
Concrete operations are as follows:
1) startup stage: inoculation municipal wastewater treatment plant denitrification dephosphorization sludge is in biological carbon and phosphorous removal AA/O reactor (2)
Anaerobism section (2.3) and anoxic section (2.4)；By the short distance nitration sludge seeding of municipal wastewater treatment plant it is good in AA/O reactor (2)/
The alternate aerobic section of anoxic (2.5) keeps the sludge concentration of anaerobism section (2.3), anoxic section (2.4) and aerobic section (2.5) to exist
3000mg/L；The filler for being enriched with anaerobic ammonia oxidizing bacteria is invested in good/anoxic alternating in biological carbon and phosphorous removal AA/O reactor (2)
Anoxic section (2.6), filler packing ratio be 30%.In this stage, municipal sewage is successively de- down through biology by water (flow) direction
The anaerobism section of nitrogen dephosphorization AA/O reactor, anoxic section and good/anoxic alternate area, carry out respectively anaerobic phosphorus release, aerobic phosphorus absorption with it is short
Journey nitrifying anaerobic ammonia oxidation reaction, by organic matter, ammonia nitrogen and the phosphorus ligands in sewage.When biological carbon and phosphorous removal AA/O reactor
Organic matter, total nitrogen and total tp removal rate respectively reach 80%, 80%, 95% or more, i.e., it is believed that continuous flow municipal sewage short distance
Nitrifying anaerobic ammonia oxidation coupling denitrification dephosphorization system starts successfully.
2) normal operating phase:
(1) by the sludge reflux of biological carbon and phosphorous removal AA/O reactor (2) to the first lattice anaerobism section (2.3), sludge reflux
Than for 100%-200%, to maintain the anaerobism section (2.3) of biological carbon and phosphorous removal AA/O reactor (2), anoxic section (2.4) to become reconciled
Oxygen section (2.5) sludge concentration is in 2500-3000mg/L.
(2) by the water outlet of biological carbon and phosphorous removal AA/O reactor nitrification liquid return pipe (3.4) and nitrification liquid reflux pump
(3.5) the second lattice anoxic section (2.4) of AA/O reactor (2), mixed liquid recycle ratio 200%, when nitre state in water outlet are flowed back into
When nitrogen concentration is greater than 10mg/L, mixed liquid recycle ratio is set as 300%；Hydraulic detention time is 10h；Sludge age is 12d.Continuously
Biological carbon and phosphorous removal AA/O reactor assembly is run, as COD≤50mg/L, NH in secondary clarifier effluent water quality4 +- N≤5mg/L,
PO4 3-After-P≤0.5mg/L and stabilization maintain 15-20 days, that is, think that system has reached stable state.
(3) anaerobic phosphorus release area (2.3) volume: the area anoxic denitrification Xi Lin (2.4) volume: short distance nitration Anammox is good
Oxygen (2.5)/anoxic (2.6) alternate area volume is 1:2:6.
(4) aerobic section (2.5) Dissolved Oxygen concentration Control of aerobic/anoxic section alternate area is in 0.5mg/L, as NH in water outlet4 +-
When N concentration is greater than 5mg/L, increase aerobic section (2.4) dissolved oxygen concentration to 1.0mg/L.
Test result shows: after stable, municipal sewage passes through COD after biological carbon and phosphorous removal AA/O reactor anaerobism section
For 45-55mg/L, NH4 +For 24-45mg/L, NO3 -For 0.1-2.0mg/L, NO2 -For 0.1-0.5mg/L, phosphorus 10-17mg/L；
Phosphorus is 0.2-2mg/L after anoxic section；Finally COD is 40-50mg/L, NH after short distance nitration Anammox4 +For 0-
6mg/L, NO3 -For 1-5mg/L, NO2 -For 0-4mg/L, phosphorus 0-0.4mg/L；It is discharged COD, NH4 +The technical indicators such as-N, TN, TP
Stably reach country-level emission standard A.
Claims (1)
1. the method for continuous flow municipal sewage short distance nitration Anammox coupling denitrification dephosphorization, using following device, the dress
Set municipal sewage raw water box (1), biological carbon and phosphorous removal AA/O reactor (2), sedimentation basin (3) including sequential connection；City is dirty
Water raw water box (1) includes overflow pipe (1.1) and blow-down pipe (1.2)；Municipal sewage raw water box (1) by water inlet pipe (2.1) and into
Water pump (2.2) is connected with biological carbon and phosphorous removal AA/O reactor (2)；Biological carbon and phosphorous removal AA/O reactor (2) includes 9 lattice
Room is divided into a lattice anaerobism section, two lattice anoxic sections, three lattice and replaces aerobic/anoxic section, each cell compartment is by pressing by water (flow) direction
Staggered water flow hole connects the generation to prevent short flow phenomenon above and below water (flow) direction；Aerobic section (2.5) uses air compressor machine (2.10)
It is aerated with aeration tube (2.9), aeration head (2.8) Constant hypoxia；Anoxic section (2.6) is placed with the filler of attachment anaerobic ammonia oxidizing bacteria
(2.11)；Every lattice of biological carbon and phosphorous removal AA/O reactor (2) are respectively equipped with blender (2.7)；Biological carbon and phosphorous removal AA/O is anti-
Device (2) are answered to connect by outlet pipe (3.1) with sedimentation basin (3)；Mud return line (3.2) and sludge reflux pump (3.3) and biology
First lattice anaerobism section (2.3) of denitrogenation dephosphorizing AA/O reactor (2) connects, and sedimentation basin is equipped with mud discharging pipe (3.6)；Nitrification liquid
Return pipe (3.4) and nitrification liquid reflux pump (3.5) are connect with the second lattice anoxic section (2.4) of AA/O reactor (2)；
Characterized by comprising the following steps:
1) startup stage: inoculation municipal wastewater treatment plant denitrification dephosphorization sludge detesting in biological carbon and phosphorous removal AA/O reactor (2)
Oxygen section (2.3) and anoxic section (2.4)；By the short distance nitration sludge seeding of municipal wastewater treatment plant in AA/O reactor (2) good/anoxic
Alternate aerobic section (2.5), keeps the sludge concentration of anaerobism section (2.3), anoxic section (2.4) and aerobic section (2.5) in 2500-
4000mg/L；The filler for being enriched with anaerobic ammonia oxidizing bacteria is invested in good/anoxic alternating in biological carbon and phosphorous removal AA/O reactor (2)
Anoxic section (2.6), filler packing ratio be 30%-35%；In this stage, municipal sewage is by water (flow) direction successively down through life
Anaerobism section, anoxic section and the good/anoxic alternate area of object denitrogenation dephosphorizing AA/O reactor, carry out anaerobic phosphorus release, aerobic phosphorus absorption respectively
It is reacted with short distance nitration Anammox, by organic matter, ammonia nitrogen and the phosphorus ligands in sewage；When biological carbon and phosphorous removal AA/O reacts
Organic matter, total nitrogen and the total tp removal rate of device respectively reach 80%, 80%, 95% or more, i.e., it is believed that continuous flow municipal sewage
Short distance nitration Anammox coupling denitrification dephosphorization system starts successfully；
2) normal operating phase:
By the sludge reflux of biological carbon and phosphorous removal AA/O reactor (2) to the first lattice anaerobism section (2.3), return sludge ratio is
100%-200%, to maintain the anaerobism section (2.3), anoxic section (2.4) and aerobic section of biological carbon and phosphorous removal AA/O reactor (2)
(2.5) sludge concentration is in 2500-3000mg/L；
The water outlet of biological carbon and phosphorous removal AA/O reactor nitrification liquid return pipe (3.4) and nitrification liquid reflux pump (3.5) are flowed back
To the second lattice anoxic section (2.4) of AA/O reactor (2), mixed liquid recycle ratio 100%-300%, when nitrate nitrogen is dense in water outlet
When degree is greater than 10mg/L, mixed liquid recycle ratio is set as 300%；Hydraulic detention time is 8-10h；Sludge age is 10-12d；Even
Reforwarding row biological carbon and phosphorous removal AA/O reactor, as COD≤50mg/L, NH in secondary clarifier effluent water quality4 +- N≤5mg/L, PO4 3--
After P≤0.5mg/L and stabilization maintain 15-20 days, that is, think that system has reached stable state；
Anaerobic phosphorus release area (2.3) volume: the area anoxic denitrification Xi Lin (2.4) volume: short distance nitration Anammox is aerobic
(2.5)/anoxic (2.6) alternate area volume is 1:2:6；
Aerobic section (2.5) Dissolved Oxygen concentration Control of aerobic/anoxic section alternate area is in 0.4-0.8mg/L, as NH in water outlet4 +- N is dense
When degree is greater than 5mg/L, increase aerobic section (2.4) dissolved oxygen concentration to 0.8-1.5mg/L.
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