CN109264859A - A2O2Sewage disposal system and its processing method - Google Patents
A2O2Sewage disposal system and its processing method Download PDFInfo
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- CN109264859A CN109264859A CN201710581852.8A CN201710581852A CN109264859A CN 109264859 A CN109264859 A CN 109264859A CN 201710581852 A CN201710581852 A CN 201710581852A CN 109264859 A CN109264859 A CN 109264859A
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- 238000003672 processing method Methods 0.000 title abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 146
- 239000010865 sewage Substances 0.000 claims abstract description 95
- 238000012545 processing Methods 0.000 claims abstract description 57
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 24
- 238000006396 nitration reaction Methods 0.000 claims abstract description 21
- 238000000926 separation method Methods 0.000 claims abstract description 18
- 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 abstract description 16
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 15
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000005842 biochemical reaction Methods 0.000 claims abstract description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 11
- 239000011574 phosphorus Substances 0.000 claims abstract description 11
- 238000007034 nitrosation reaction Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 238000010521 absorption reaction Methods 0.000 claims abstract description 4
- 238000010992 reflux Methods 0.000 claims description 44
- 239000010802 sludge Substances 0.000 claims description 30
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 28
- 238000004062 sedimentation Methods 0.000 claims description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 230000014759 maintenance of location Effects 0.000 claims description 8
- 239000011259 mixed solution Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 3
- 244000005706 microflora Species 0.000 claims description 3
- 239000007900 aqueous suspension Substances 0.000 claims description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims 1
- 239000013589 supplement Substances 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000009428 plumbing Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 238000005276 aerator Methods 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000001235 sensitizing effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 208000036119 Frailty Diseases 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 241000108664 Nitrobacteria Species 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- VGPSUIRIPDYGFV-UHFFFAOYSA-N [N].O[N+]([O-])=O Chemical compound [N].O[N+]([O-])=O VGPSUIRIPDYGFV-UHFFFAOYSA-N 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 206010003549 asthenia Diseases 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000009935 nitrosation Effects 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N nitrous oxide Inorganic materials [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
Classifications
-
- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/043—Treatment of partial or bypass streams
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present invention provides a kind of A2O2Sewage disposal system and its processing method.The system comprises successively interconnected anoxic pond, anaerobic pond, pre- aerobic tank, aerobic tank and mud and water separating equipment, sewage is respectively delivered to anoxic pond, anaerobic pond, pre- aerobic tank and aerobic tank by pipeline.Organic carbon source needed for the present invention is respectively provided to each biochemical reaction tank by using the mode that multichannel is intake can make full use of into the carbon source in water, not have to supplement additional carbon to biochemistry pools such as anoxic ponds, to preferably save operating cost.Described method includes following steps: sewage being carried out anti-nitration reaction, then Anammox reaction is carried out and carries out the release of phosphorus, then carry out nitrosation reaction, nitration reaction is carried out then to convert nitrate nitrogen for ammonia nitrogen and cultured water and carries out the absorption of phosphorus；The processing water that above-mentioned steps obtain carries out mud-water separation processing.Sewage is respectively delivered to anoxic pond, anaerobic pond, pre- aerobic tank and aerobic tank.
Description
Technical field
The present invention relates to sanitary sewage disposal fields, and relate more specifically to a kind of A2O2Sewage disposal system and its processing
Method.
Background technique
In November, 2015, national environmental protection portion issue revised edition " urban wastewater treatment firm pollutant emission standard " (sign
Seek opinion original text), it is put forward for the first time special emission limit, special emission limit totality and " water environment quality standard " (GB3838-
2002) IV class water quality requires quite (except total nitrogen).Processing effluent COD concentration is required to be not higher than in special emission limit
30mg/L, ammonia nitrogen concentration are not higher than 1.5mg/L, and total nitrogen concentration is not higher than 10mg/L, and SS concentration is not higher than 5mg/L.Revised edition
Discharge standard was also required from July 1st, 2016, and newly-merged university sewage treatment plant executes level-one A standard；From on January 1st, 2018
It rises, the existing urban wastewater treatment firm in sensitizing range executes level-one A standard；The sewage treatment plant of ecological environment frailty sensitizing range
Execute special discharge standard.The existing process flow of most domestic sewage treatment plant as a result, can no longer meet new water quality
It is required that, it is necessary to optimize transformation.
Currently, the carbon-nitrogen ratio of China's sanitary sewage is generally relatively low, carbon source deficiency is to influence conventional biochemical technique nitric efficiency
A main cause, be to improve anoxic process process to the removal efficiency of nitrogen, often need additionally to add glucose, sodium acetate etc.
Organic matter supplementary carbon source, the processing cost is high.And the special discharge standard in " consultation " is to water outlet ammonia nitrogen and total nitrogen index
It is more stringent, how water-inlet carbon source is made full use of, that reduces additional carbon adds expense, and reaching better denitrification effect will become
Sanitary sewage disposal engineering proposes an important directions of mark transformation and technological design in the future.
Therefore, it is necessary to a kind of sewage disposal system and sewage water treatment methods, are deposited in the prior art at least being partially solved
The problem of.
Summary of the invention
A series of concept of reduced forms is introduced in Summary, this will in the detailed description section into
One step is described in detail.Summary of the invention is not meant to attempt to limit technical solution claimed
Key feature and essential features do not mean that the protection scope for attempting to determine technical solution claimed more.
In order at least be partially solved the above problem, according to the first aspect of the invention, a kind of A is provided2O2Sewage treatment
System, the A2O2Sewage disposal system includes successively interconnected anoxic pond, anaerobic pond, pre- aerobic tank, aerobic tank and muddy water point
From equipment, sewage is successively carried out to anti-nitration reaction, Anammox reaction, nitrosation reaction, nitration reaction and muddy water point
From processing.
Wherein, sewage is respectively delivered to the anoxic pond, anaerobic pond, pre- aerobic tank and aerobic tank by pipeline, to divide
Organic carbon source needed for not provided to each biochemical reaction tank.
According to this programme, organic carbon source needed for respectively being provided to each biochemical reaction tank in such a way that multichannel is intake,
It can make full use of the carbon source in sewage (water inlet), do not have to supplement additional carbon to biochemistry pools such as anoxic ponds, to preferably save
About operating cost.A provided by the invention2O2Sewage disposal system is capable of handling the sewage of different quality, and processing capacity is strong, takes off
Nitrogen phosphor-removing effect is good, and effluent quality can satisfy the standard newly promulgated.
Preferably, be provided with volume control device on the pipeline for conveying sewage, with respectively adjust the anoxic pond,
The inflow of the sewage of the anaerobic pond, the pre- aerobic tank and the aerobic tank.
Preferably, by the volume control device to control the inflow for the sewage for being delivered to the anoxic pond greater than defeated
Send the inflow of the sewage to the anaerobic pond, the pre- aerobic tank and the aerobic tank.
It preferably, further include for a part in the aerobic tank to be handled water and sludge reflux to the anoxic pond
First reflux unit, wherein the reflux ratio of processing water and sludge be 100%~300% or the reflux ratio of muddy water mixed solution be
100%~300%.
It preferably, further include for a part processing water in the pre- aerobic tank to be back to the second of the anaerobic pond
Reflux unit, wherein the reflux ratio for handling water is 100%~300%.
Preferably, the anoxic pond, the anaerobic pond, the pre- aerobic tank, the aerobic tank are by a case construction
At multiple separation ponds formed, the mud and water separating equipment is arranged in the aerobic tank, in order to A2O2Sewage disposal system
One is mobile.
Preferably, the mud and water separating equipment includes sedimentation basin and denitrification bio-filter, the sedimentation basin and described anti-
Biofilter connection is nitrified, the processing water after sedimentation basin is separated further removes ammonia nitrogen and nitrate nitrogen, and filters suspension
Object.
Preferably, the mud and water separating equipment includes MBR film device, and the MBR film device is connected to the aerobic tank, with
The sludge concentration in the aerobic tank is improved by the retention filtration of film, and mud-water separation effect is good, aqueous suspension out
Object is low.
According to the second aspect of the invention, a kind of A is provided2O2Sewage water treatment method, the A2O2Sewage water treatment method includes
Following steps:
Sewage transport to anoxic pond is carried out anti-nitration reaction to remove nitrate nitrogen by S1；
The processing water that step S1 is obtained is flowed into anaerobic pond and carries out Anammox reaction to remove ammonia nitrogen and nitrous by S2
Sour nitrogen and the release for carrying out phosphorus；
The processing water that step S2 is obtained is flowed into pre- aerobic tank, dominant microflora culture is carried out in pre- aerobic tank, with master by S3
Carry out nitrosation reaction using by mineralized nitrogen as cultured water, and have part cultured water occur nitration reaction be converted into nitric acid
Nitrogen；
The processing water that step S3 is obtained is flowed into aerobic tank and carries out nitration reaction to convert ammonia nitrogen and cultured water by S4
For the absorption of nitrate nitrogen and progress phosphorus；And
S5, the processing water that step S4 is obtained carry out mud-water separation processing.
Wherein, the sewage in step S1 is respectively delivered to the anaerobic pond, the pre- aerobic tank and the aerobic tank, with
Organic carbon source needed for respectively being provided into each biochemical reaction tank.
According to this programme, organic carbon source needed for respectively being provided to each biochemical reaction tank in such a way that multichannel is intake,
It can make full use of the carbon source in sewage (water inlet), do not have to supplement additional carbon to anoxic pond etc., to preferably save fortune
Row expense.A provided by the invention2O2Sewage water treatment method is capable of handling the sewage of different quality, and processing capacity is strong, denitrogenation dephosphorizing
Effect is good, and effluent quality can satisfy the standard newly promulgated.
Preferably, the inflow for being delivered to the sewage of the anoxic pond, which is greater than, is delivered to the anaerobic pond, described pre- aerobic
The inflow of the sewage of pond and the aerobic tank.
Preferably, further include step S24, a part in the aerobic tank handled by step 4 is handled into water and dirt
Mud is back to the anoxic pond, wherein the reflux ratio of processing water and sludge is time of 100%~300% or muddy water mixed solution
Stream is than being 100%~300%.
Preferably, further include step S23, a part processing water in the pre- aerobic tank handled by step 3 is returned
It flow to the anaerobic pond, wherein the reflux ratio for handling water is 100%~300%.
Preferably, the hydraulic detention time of the pre- aerobic tank is less than or equal to the hydraulic detention time of the aerobic tank.
Preferably, the dissolved oxygen in the anoxic pond, the anaerobic pond, the pre- aerobic tank and the aerobic tank is respectively
Control is no more than 0.5mg/L, is not more than 0.2mg/L, no more than 2mg/L and not less than 2.5mg/L.
Detailed description of the invention
Following drawings of the invention is incorporated herein as part of the present invention for the purpose of understanding the present invention.Shown in the drawings of this hair
Bright embodiment and its description, device used to explain the present invention and principle.In the accompanying drawings,
Fig. 1 is the A of the first preferred embodiment according to the present invention2O2The flow diagram of sewage disposal system；
Fig. 2 is the A of the first preferred embodiment according to the present invention2O2The equipment arrangement schematic diagram of sewage disposal system；
Fig. 3 is the A of the second preferred embodiment according to the present invention2O2The flow diagram of sewage disposal system；And
Fig. 4 is the A of the second preferred embodiment according to the present invention2O2The equipment arrangement schematic diagram of sewage disposal system.
Attached drawing mark
11, anoxic pond 12, anaerobic pond
13, pre- aerobic tank 14, aerobic tank
15, sedimentation basin 16, denitrification bio-filter
17, submersible agitator 18, aerator
20, equipment room
100,101,102,103,104, plumbing drain
110A, 110B, discharge pipe line
201A, 201B, 202,204, return line
203A, 203B, mud line
301, air pipe line 141, MBR film device
Specific embodiment
In the following description, a large amount of concrete details are given so as to provide a more thorough understanding of the present invention.So
And it is obvious to the skilled person that the present invention may not need one or more of these details and be able to
Implement.In other examples, in order to avoid confusion with the present invention, for some technical characteristics well known in the art not into
Row description.
In order to thoroughly understand the present invention, detailed structure will be proposed in following description, to illustrate the present invention.It is aobvious
So, execution of the invention is not limited to the specific details that the those skilled in the art are familiar with.Preferable reality of the invention
Example is applied to be described in detail as follows, however other than these detailed descriptions, the present invention can also have other embodiments, should not solve
It is interpreted as being confined to embodiments presented herein.
It should be understood that the purpose of term as used herein is only that description specific embodiment and not as the present invention
Limitation, " one " of singular "one" and " described/should " be also intended to include plural form, unless the context clearly indicates separately
Outer mode.When the term " comprising " and/or " including " is used in this specification, indicate that there are the feature, entirety, steps
Suddenly, operation, element and/or component, but do not preclude the presence or addition of one or more other features, entirety, step, operation, member
Part, component and/or their combination.Term " on " used in the present invention, "lower", "front", "rear", "left", "right" and
Similar statement for illustrative purposes only, not limits.
The cited such as ordinal number of " first " and " second " is only to identify in the present invention, without any other
Meaning, such as specific sequence etc..Moreover, for example, term " first component " itself does not imply that the presence of " second component ", art
Language " second component " does not imply that the presence of " first component " in itself.
Hereinafter, specific embodiments of the present invention are described in more detail with reference to the accompanying drawings, those figures show this
The representative embodiment of invention is not to limit the present invention.
In the present invention, " A2O2" technique refers to pre- aerobic-aerobic biochemical processing process of anoxic-anaerobism-.
The present invention provides a kind of A2O2Sewage water treatment method, the A2O2Sewage water treatment method uses " A2O2" process life
Sewage living.
Referring to Fig. 1 and Fig. 3, the A2O2Sewage water treatment method includes the following steps:
Sewage transport to anoxic pond 11 is carried out anti-nitration reaction to remove nitrate nitrogen by S1.
The processing water that step S1 is obtained is flowed into anaerobic pond 12 and carries out Anammox reaction to remove ammonia nitrogen and Asia by S2
Nitrate nitrogen and the release for carrying out phosphorus.
The processing water that step S2 is obtained is flowed into pre- aerobic tank 13, carries out dominant microflora culture in pre- aerobic tank by S3.Pond
Inside be substantially carried out nitrosation reaction using by mineralized nitrogen as cultured water.And there is part cultured water that nitration reaction occurs and be converted into
Nitrate nitrogen.
A part processing water in the pre- aerobic tank 13 handled by step 3 is back to anaerobic pond 12 by S23, with to detesting
Nitrosation liquid is provided in oxygen pond 12.
The processing water that step S3 is obtained is flowed into aerobic tank 14 and carries out nitration reaction to turn ammonia nitrogen and cultured water by S4
It turns to nitrate nitrogen and carries out the absorption of phosphorus.
S24, by the aerobic tank 14 handled by step 4 a part processing water and sludge reflux to anoxic pond 11, with
Nitrification liquid is provided to anoxic pond 11 and keeps sludge concentration in pond.
S5, the processing water that step S4 is obtained carry out mud-water separation processing.
In order to which adequately using the organic carbon source in water inlet (sewage), the present invention is conveyed by the way of multichannel water inlet
Sewage.Specifically, the sewage in step S1 is divided into four tunnels, is respectively delivered to anoxic pond 11, anaerobic pond 12, pre- aerobic tank 13
With aerobic tank 14, so as to respectively into each biochemical reaction tank provide needed for organic carbon source.
Carbon source needed for the mode of multichannel water inlet can provide growth and breeding for the bacterium in each biochemical reaction tank, with
Bacterial activity is improved, guarantees that biochemical reaction preferably carries out.For example, the sewage conveyed into anaerobic pond 12 can be poly- phosphobacteria
Growth provide carbon source, the bioactivity of poly- phosphobacteria is improved, to ensure that anaerobic phosphorus release effect.
Preferably, be delivered to the sewage of anoxic pond 11 inflow be greater than be delivered to anaerobic pond 12, pre- aerobic tank 13 is become reconciled
The inflow of the sewage in oxygen pond 14.
Preferably, the present invention is delivered to each life by the way of the flow percentage for controlling each branch sewage with control
Change the inflow of the sewage of reaction tank.
It further, is to pass through pretreated sewage into the sewage in sewage disposal system, sewage enters anoxic pond 11
It is mixed with the processing water and sludge to flow back from aerobic tank 14, more nitrate nitrogen is contained in the processing water, it can be (dirty with water inlet
Water) in organic matter (mostly organic carbon containing substances) occur anti-nitration reaction, by nitrate nitrogen be converted into nitrogen removing, make full use of
Carbon source in water inlet realizes the removal to sewage nitrogen pool (TN).The reflux of sludge ensure that entire sewage disposal system
Sludge concentration.
It should be noted that different according to mud-water separation treatment process, handling water and sludge can respectively flow back, at this time
The reflux ratio of the processing water and sludge that flow back from aerobic tank 14 can be 100%~300%, preferably 300%.Handle water and
Sludge can be flowed back together in the form of muddy water mixed solution, and the reflux ratio of muddy water mixed solution can be 100%~300%, preferably
It is 300%.Reflux uses stripping reflux mode, with reduce the equipment such as reflux pump purchase and maintenance cost, while reducing system
Run power consumption.
Further, the processing water after denitrogenation enters anaerobic pond 12, with the processing to flow back from pre- aerobic tank 13
Water mixes, and more cultured water is contained in the processing water, and Anammox occurs with the ammonia nitrogen in 12 water of anaerobic pond and reacts, will
Ammonia nitrogen and/or cultured water are converted into nitrogen removing, further decrease TN.Also, the release of phosphorus is carried out in anaerobic pond 12.It is excellent
Selection of land, the reflux ratio of the processing water from the reflux of pre- aerobic tank 13 can be 100%~300%, preferably 300%.Reflux is adopted
With stripping reflux mode.
Further, the water outlet of anaerobic pond 12 in pond under the participation of nitrite bacteria, is mainly sent out from pre- aerobic tank 13 is flowed into
Mineralized nitrogen in water is cultured water by raw nitrosation reaction.Nitration reaction occurs in pond for part cultured water, is converted into
Nitrate nitrogen.Preferably, the hydraulic detention time of pre- aerobic tank 13 is less than or equal to the hydraulic detention time of aerobic tank 14.It is pre- aerobic
The dissolved oxygen content in pond 13 is lower than the dissolved oxygen content of aerobic tank 14.
Further, the processing water after nitrosation reaction enters aerobic tank 14, ammonia nitrogen with from pre- aerobic tank 13
Cultured water is converted into nitrate nitrogen, further degradation of organic substances by nitration reaction.Also, the suction of phosphorus is carried out in aerobic tank 14
It receives.
Preferably, in order to reach better treatment effect, anoxic pond 11, anaerobic pond 12, pre- aerobic tank 13 and aerobic tank 14
In dissolved oxygen respectively control for no more than 0.5mg/L, no more than 0.2mg/L, no more than 2mg/L and not less than 2.5mg/L.
To reach better effluent quality, the processing water in aerobic tank 14 can take following two mud-water separation to handle work
Skill:
(1) aerobic tank 14 uses biomembrane process, i.e., hangs or add biologic packing material in aerobic tank 14, microorganism is being filled out
Expect that surface forms biomembrane, sludge concentration in aerobic tank 14 can be increased, improves treatment effeciency.Aerobic tank 14 is followed by sedimentation basin
15, it may be selected in sedimentation basin 15 to place inclined tube filler, improve mud-water separation effect.Increase a denitrification biology after sedimentation basin 15
Filtrate is placed in filter tank 16 in pond, can be further by the denitrification of the retention filtering and filter material surface biomembrane of filtrate
Water outlet TN and SS is reduced, guarantees water quality reaching standard.
(2) aerobic tank 14 uses MBR technique, i.e., MBR membrane module is placed in aerobic tank 14, since the high efficiency filter of film is made
With, sludge concentration in pond can be greatly increased, Age of Activated Sludge is improved, so that a large amount of nitrobacteria is retained, reinforcing nitrification
Treatment effect.And it is subsequent to be not necessarily to sedimentation basin 15 and denitrification bio-filter 16, greatly save occupied area.MBR membrane module goes out
Water SS is low, and effluent quality is good.
The present invention also provides a kind of A2O2Sewage disposal system, the A2O2Sewage disposal system is for realizing above-mentioned sewage
Processing method has many advantages, such as mobility, integration, modularization.
Fig. 1 and Fig. 2 schematically illustrates the A of the first preferred embodiment2O2Sewage disposal system.Such as Fig. 1 and Fig. 2 institute
Show, the A2O2Sewage disposal system includes successively interconnected anoxic pond 11, anaerobic pond 12, pre- aerobic tank 13,14 and of aerobic tank
Mud and water separating equipment, sewage is successively carried out anti-nitration reaction, Anammox reaction, nitrosation reaction, nitration reaction and
Mud-water separation processing.
Plumbing drain 100 divide four tunnels 101,102,103 and 104 respectively with anoxic pond 11, anaerobic pond 12, pre- aerobic tank 13 and
The water inlet of aerobic tank 14 is connected to, and sewage is respectively delivered to anoxic pond 11, anaerobic pond 12, pre- aerobic tank 13 and aerobic tank 14
In, respectively to provide required organic carbon source into each biochemical reaction tank.
It is provided with volume control device on plumbing drain 101,102,103 and 104, respectively to control and adjust anoxic pond
11, the inflow of anaerobic pond 12, pre- aerobic tank 13 and aerobic tank 14.Preferably, volume control device may include valve and stream
Meter.It is greater than by volume control device with the inflow for controlling sewage transport to anoxic pond 11 and is delivered to anaerobic pond 12, pre- good
The inflow in oxygen pond 13 and aerobic tank 14.
In the preferred embodiment, anoxic pond 11, anaerobic pond 12, pre- aerobic tank 13, aerobic tank 14 hydraulic retention when
Between be respectively 1h, 1h, 3h and 3h, flow of inlet water controls respectively 75%, 5%, 10% and 10%.
Mud and water separating equipment includes sedimentation basin 15 and denitrification bio-filter 16, the water inlet and aerobic tank 14 of sedimentation basin 15
Water outlet connection, the water outlet of aerobic tank 14 realizes mud-water separation using sedimentation basin 15.The water outlet and denitrification of sedimentation basin 15
Biofilter 16 is connected to, and the processing water after sedimentation basin 15 is separated further removes ammonia nitrogen and nitrate nitrogen, and filters suspension
Object guarantees that TN and SS index meets the standard that country newly promulgates in water quality.Then the processing water warp in denitrification bio-filter 16
Discharge pipe line 110A outlet or reuse.The partial sludge of sedimentation basin 15 is through draining into subsequent processing outside mud line 203A, to reach
To the purpose of spoil disposal dephosphorization.
The A2O2Sewage disposal system further includes the first reflux unit (not shown), and the first reflux unit includes water reflux dress
It sets and sludge refluxing apparatus.Water reflux unit is connected to aerobic tank 14, and passes through return line 201A for one in aerobic tank 14
Part processing water is delivered to anoxic pond 11.Sludge refluxing apparatus is connected to sedimentation basin 15, by return line 202 by sedimentation basin 15
In a part of sludge reflux to anoxic pond 11.
The A2O2Sewage disposal system further includes the second reflux unit (not shown).Second reflux unit and pre- aerobic tank 13
Connection, and a part processing water in pre- aerobic tank 13 is back to by anaerobic pond 12 by return line 204.
Water reflux unit, sludge refluxing apparatus and the second reflux unit of the present invention are preferably stripping reflux device.Air lift is returned
It flows device and provides power using blower gas source, that is, can reach the promotion effect of processing water and sludge, be not necessarily to pump reflux, substantially reduce
Energy consumption.
It is provided with the air pipe line 301 connecting with blower in pre- aerobic tank 13 and aerobic tank 14, is divided by air pipe line 301
Air is conveyed not into two ponds to be aerated.
In order to more easily handle dispersion type domestic wastewater, the A2O2Sewage disposal system is configured to container-type, in order to
Sewage disposal system is integrally mobile.Specifically, anoxic pond 11, anaerobic pond 12, pre- aerobic tank 13, aerobic tank 14,15 and of sedimentation basin
Denitrification bio-filter 16 be by a case construction at multiple separation ponds formed.Specific location is arranged referring to fig. 2.This is more
One in a separation pond is set as equipment room 20, and the equipment in equipment room 20 includes blower, ultraviolet ray disinfector, filter tank recoil
Cleaning device etc. passes in and out the pipeline of system in 20 side centralized arrangement of equipment room.
Preferably, submersible agitator 17 is installed in the bottom of anoxic pond 11 and anaerobic pond 12 respectively, and blender intermittent duty can
To prevent sludgd deposition in pond, and make to mix into water, phegma and sludge, react more abundant.Pre- aerobic tank 13 and aerobic tank 14
Bottom arrange aerator 18, carry out aeration oxygen replenishing, have suitable dissolved oxygen in pond to ensure.
The integrated A that this preferred embodiment provides2O2Denitrification filter pool sewage disposal device has cost of investment low,
The advantages that operating cost is few, and effluent quality is good.
Fig. 3 and Fig. 4 schematically illustrates the A of the second preferred embodiment of the invention2O2Sewage disposal system.Second
Preferred embodiment and above-mentioned first preferred embodiment are substantially similar, the difference is that the mud-water separation of second embodiment is set
Standby includes MBR film device 141, to increase the sludge concentration in aerobic tank 14 by retention filtering.Specifically, MBR film device
141 settings are connected in aerobic tank 14, and with aerobic tank 14, and the water outlet of MBR film device 141 is connect with discharge pipe line 110B,
With by treated water outlet or the reuse of MBR film device 141.Preferably, MBR film device 141 is MBR membrane module.Due to MBR film
Height retention and filtration, sludge concentration is high in aerobic tank 14, and nitration reaction is abundant, 141 stable water outlet of MBR membrane module,
High treating effect.The water outlet of MBR film again can qualified discharge or reuse after disinfection by ultraviolet light.
First reflux unit is connected to aerobic tank 14, and passes through return line 201B for a part of muddy water in aerobic tank 14
Mixed liquor is delivered to anoxic pond 11.Partial sludge in aerobic tank 14 is through draining into subsequent processing outside mud line 203B, to reach
To the purpose of spoil disposal dephosphorization.
In the preferred embodiment, anoxic pond 11, anaerobic pond 12, pre- aerobic tank 13, aerobic tank 14 hydraulic retention when
Between be respectively 1h, 1h, 1h and 3h, flow of inlet water controls respectively 75%, 5%, 10% and 10%.
The container-type integrated A that this preferred embodiment provides2O2- MBR sewage disposal system has operational management letter
The advantages that list, stable effluent quality, small occupied area.
Unless otherwise defined, technical and scientific term used herein and those skilled in the art of the invention
Normally understood meaning is identical.Term used herein is intended merely to describe specifically to implement purpose, it is not intended that limitation is originally
Invention.The terms such as herein presented " portion ", " part " can both indicate single part, can also indicate multiple parts
Combination.The terms such as herein presented " installation ", " setting " can both indicate that a component was attached directly to another portion
Part can also indicate that a component is attached to another component by middleware.It describes in one embodiment herein
Feature can be applied in combination another embodiment individually or with other features, unless this feature is in another implementation
It is not suitable for or is otherwise noted in mode.
The present invention has been explained by the above embodiments, but it is to be understood that, above-described embodiment is only intended to
The purpose of citing and explanation, is not intended to limit the invention to the scope of the described embodiments.Furthermore those skilled in the art
It is understood that the present invention is not limited to the above embodiments, introduction according to the present invention can also be made more kinds of member
Variants and modifications, all fall within the scope of the claimed invention for these variants and modifications.Protection scope of the present invention by
The appended claims and its equivalent scope are defined.
Claims (14)
1. a kind of A2O2Sewage disposal system, which is characterized in that including successively interconnected anoxic pond, anaerobic pond, pre- aerobic
Pond, aerobic tank and mud and water separating equipment, sewage is successively carried out anti-nitration reaction, Anammox reaction, nitrosation reaction,
Nitration reaction and mud-water separation processing,
Wherein, sewage is respectively delivered to the anoxic pond, the anaerobic pond, the pre- aerobic tank and described aerobic by pipeline
Pond, respectively to provide required organic carbon source to each biochemical reaction tank.
2. A according to claim 12O2Sewage disposal system, which is characterized in that be arranged on the pipeline for conveying sewage
There is volume control device, respectively to adjust the dirt of the anoxic pond, the anaerobic pond, the pre- aerobic tank and the aerobic tank
The inflow of water.
3. A according to claim 22O2Sewage disposal system, which is characterized in that by the volume control device to control
The inflow that system is delivered to the sewage of the anoxic pond, which is greater than, is delivered to the anaerobic pond, the pre- aerobic tank and the aerobic tank
Sewage inflow.
4. A according to claim 12O2Sewage disposal system, which is characterized in that further include for will be in the aerobic tank
A part processing water and sludge reflux to the anoxic pond the first reflux unit, wherein processing water and sludge reflux ratio
Be 100%~300% or muddy water mixed solution reflux ratio be 100%~300%.
5. A according to claim 12O2Sewage disposal system, which is characterized in that further include being used for the pre- aerobic tank
In a part processing water be back to the second reflux unit of the anaerobic pond, wherein the reflux ratio for handling water is 100%~
300%.
6. A according to claim 1-52O2Sewage disposal system, which is characterized in that the anoxic pond described is detested
Oxygen pond, the pre- aerobic tank, the aerobic tank be by a case construction at multiple separation ponds formed, the mud-water separation
Equipment is arranged in the aerobic tank, in order to which sewage disposal system is integrally mobile.
7. A according to claim 1-52O2Sewage disposal system, which is characterized in that the mud and water separating equipment
Including sedimentation basin and denitrification bio-filter, the sedimentation basin is connected to the denitrification bio-filter, and sedimentation basin is separated
Processing water afterwards further removes ammonia nitrogen and nitrate nitrogen, and filters suspended matter.
8. A according to claim 62O2Sewage disposal system, which is characterized in that the mud and water separating equipment includes MBR film
Device, the MBR film device are connected to the aerobic tank, to be increased in the aerobic tank by the retention filtration of film
Sludge concentration, and mud-water separation effect is good, and aqueous suspension is low out.
9. a kind of A2O2Sewage water treatment method, which comprises the steps of:
Sewage transport to anoxic pond is carried out anti-nitration reaction to remove nitrate nitrogen by S1；
The processing water that step S1 is obtained is flowed into anaerobic pond and carries out Anammox reaction to remove ammonia nitrogen and cultured water by S2
With the release for carrying out phosphorus；
The processing water that step S2 is obtained is flowed into pre- aerobic tank, dominant microflora culture is carried out in pre- aerobic tank by S3, with mainly into
Row nitrosation reaction using by mineralized nitrogen as cultured water, and have part cultured water occur nitration reaction be converted into nitrate nitrogen；
The processing water that step S3 is obtained is flowed into aerobic tank and carries out nitration reaction to convert nitre for ammonia nitrogen and cultured water by S4
Sour nitrogen and the absorption for carrying out phosphorus；And
S5, the processing water that step S4 is obtained carry out mud-water separation processing,
Wherein, the sewage in step S1 is respectively delivered to the anaerobic pond, the pre- aerobic tank and the aerobic tank, with respectively
Ground provides required organic carbon source into each biochemical reaction tank.
10. A according to claim 92O2Sewage water treatment method, which is characterized in that be delivered to the sewage of the anoxic pond
Inflow is greater than the inflow for being delivered to the sewage of the anaerobic pond, the pre- aerobic tank and the aerobic tank.
11. A according to claim 102O2Sewage water treatment method, which is characterized in that it further include step S24, it will be by step
A part processing water and sludge reflux in the aerobic tanks of rapid 4 processing is to the anoxic pond, wherein processing water and sludge
Reflux ratio be 100%~300% or muddy water mixed solution reflux ratio be 100%~300%.
12. A according to claim 102O2Sewage water treatment method, which is characterized in that it further include step S23, it will be by step
A part processing water in the pre- aerobic tanks of rapid 3 processing is back to the anaerobic pond, wherein the reflux ratio for handling water is
100%~300%.
13. A according to claim 92O2Sewage water treatment method, which is characterized in that when the hydraulic retention of the pre- aerobic tank
Between be less than or equal to the aerobic tank hydraulic detention time.
14. A according to claim 92O2Sewage water treatment method, which is characterized in that the anoxic pond, the anaerobic pond, institute
State the dissolved oxygen in pre- aerobic tank and the aerobic tank respectively control for no more than 0.5mg/L, no more than 0.2mg/L, less
In 2mg/L and it is not less than 2.5mg/L.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110092551A (en) * | 2019-06-14 | 2019-08-06 | 广西碧清源环保投资有限公司 | A kind of control method and system of the regeneration of ceramic membrane sewage denitrification and dephosphorization |
| CN110386665A (en) * | 2019-07-09 | 2019-10-29 | 中电建水环境治理技术有限公司 | Biochemical treatment system for bed mud residual water treatment equipment |
| CN111233147A (en) * | 2020-01-16 | 2020-06-05 | 四川信步达信息技术咨询有限公司 | Method and system for increasing carbon strengthening effect in sewage treatment |
| CN112678958A (en) * | 2020-12-24 | 2021-04-20 | 华北水利水电大学 | Multi-point water inlet sleeve type inversion A2O + MBBR integrated sewage treatment device |
| CN116573817A (en) * | 2023-07-13 | 2023-08-11 | 四川省建筑科学研究院有限公司 | Integrated mixed biological treatment system and method for dispersed sewage |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102040315A (en) * | 2010-10-21 | 2011-05-04 | 兖矿集团有限公司 | Method for treating high ammonia nitrogen wastewater by two-stage A/O process |
| CN203360117U (en) * | 2013-07-17 | 2013-12-25 | 郑州大学 | Multipoint inflowing circulation A/O sewage treatment system |
| CN207108603U (en) * | 2017-07-17 | 2018-03-16 | 广东新会中集特种运输设备有限公司 | A2O2Sewage disposal system |
-
2017
- 2017-07-17 CN CN201710581852.8A patent/CN109264859A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102040315A (en) * | 2010-10-21 | 2011-05-04 | 兖矿集团有限公司 | Method for treating high ammonia nitrogen wastewater by two-stage A/O process |
| CN203360117U (en) * | 2013-07-17 | 2013-12-25 | 郑州大学 | Multipoint inflowing circulation A/O sewage treatment system |
| CN207108603U (en) * | 2017-07-17 | 2018-03-16 | 广东新会中集特种运输设备有限公司 | A2O2Sewage disposal system |
Non-Patent Citations (1)
| Title |
|---|
| 刘航航: "A2/O2工艺处理氮肥废水的短程硝化反硝化过程及动力学分析", 中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑, no. 4, pages 027 - 424 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110092551A (en) * | 2019-06-14 | 2019-08-06 | 广西碧清源环保投资有限公司 | A kind of control method and system of the regeneration of ceramic membrane sewage denitrification and dephosphorization |
| CN110386665A (en) * | 2019-07-09 | 2019-10-29 | 中电建水环境治理技术有限公司 | Biochemical treatment system for bed mud residual water treatment equipment |
| CN110386665B (en) * | 2019-07-09 | 2024-05-24 | 中电建生态环境集团有限公司 | Biochemical treatment system for sediment residual water treatment equipment |
| CN111233147A (en) * | 2020-01-16 | 2020-06-05 | 四川信步达信息技术咨询有限公司 | Method and system for increasing carbon strengthening effect in sewage treatment |
| CN112678958A (en) * | 2020-12-24 | 2021-04-20 | 华北水利水电大学 | Multi-point water inlet sleeve type inversion A2O + MBBR integrated sewage treatment device |
| CN116573817A (en) * | 2023-07-13 | 2023-08-11 | 四川省建筑科学研究院有限公司 | Integrated mixed biological treatment system and method for dispersed sewage |
| CN116573817B (en) * | 2023-07-13 | 2023-09-26 | 四川省建筑科学研究院有限公司 | Integrated mixed biological treatment system and method for dispersed sewage |
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