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CN109264859A - A2O2Sewage disposal system and its processing method - Google Patents

A2O2Sewage disposal system and its processing method Download PDF

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Publication number
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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CN
China
Prior art keywords
tank
aerobic tank
water
sewage
aerobic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710581852.8A
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Chinese (zh)
Inventor
黎泽深
吴长彩
陈成光
何欣杰
谢飞龙
覃卫平
陈伟斌
许磊
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Guangdong Xinhui CIMC Special Transportation Equipment Co Ltd
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Guangdong Xinhui CIMC Special Transportation Equipment Co Ltd
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Application filed by Guangdong Xinhui CIMC Special Transportation Equipment Co Ltd filed Critical Guangdong Xinhui CIMC Special Transportation Equipment Co Ltd
Priority to CN201710581852.8A priority Critical patent/CN109264859A/en
Publication of CN109264859A publication Critical patent/CN109264859A/en
Pending legal-status Critical Current

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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
    • C02F3/02—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

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  • 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

A2O2Sewage disposal system and its processing method
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)

1.一种A2O2污水处理系统，其特征在于，包括依次相互连通的缺氧池、厌氧池、预好氧池、好氧池和泥水分离设备，以将污水依次进行反硝化反应、厌氧氨氧化反应、亚硝化反应、硝化反应和泥水分离处理，An A 2 O 2 sewage treatment system characterized by comprising an anoxic tank, an anaerobic tank, a pre-aerobic tank, an aerobic tank and a mud-water separation device which are sequentially connected to each other to sequentially carry out denitrification reaction of sewage , anaerobic ammonium oxidation reaction, nitrosation reaction, nitrification reaction and mud water separation treatment, 其中，污水通过管路分别地输送至所述缺氧池、所述厌氧池、所述预好氧池和所述好氧池，以分别地向各个生化反应池提供所需有机碳源。Wherein, the sewage is separately transported through the pipeline to the anoxic tank, the anaerobic tank, the pre-aerobic tank and the aerobic tank to respectively supply the respective organic carbon sources to the respective biochemical reaction tanks. 2.根据权利要求1所述的A2O2污水处理系统，其特征在于，用于输送污水的管路上设置有流量控制装置，以分别地调节所述缺氧池、所述厌氧池、所述预好氧池和所述好氧池的污水的进水量。2 . The A 2 O 2 sewage treatment system according to claim 1 , wherein a flow control device is disposed on the pipeline for conveying sewage to separately adjust the anoxic tank, the anaerobic tank, The amount of water entering the pre-aerobic tank and the aerobic tank. 3.根据权利要求2所述的A2O2污水处理系统，其特征在于，通过所述流量控制装置以控制输送至所述缺氧池的污水的进水量大于输送至所述厌氧池、所述预好氧池和所述好氧池的污水的进水量。The A 2 O 2 sewage treatment system according to claim 2, wherein the flow rate control device controls the amount of water flowing into the anoxic tank to be larger than that delivered to the anaerobic tank, The amount of water entering the pre-aerobic tank and the aerobic tank. 4.根据权利要求1所述的A2O2污水处理系统，其特征在于，还包括用于将所述好氧池中的一部分处理水和污泥回流至所述缺氧池的第一回流装置，其中，处理水和污泥的回流比均为100％～300％，或泥水混合液的回流比为100％～300％。The A 2 O 2 sewage treatment system according to claim 1, further comprising a first reflux for returning a portion of the treated water and sludge in the aerobic tank to the anoxic tank The apparatus wherein the reflux ratio of the treated water and the sludge is 100% to 300%, or the reflux ratio of the muddy water mixture is 100% to 300%. 5.根据权利要求1所述的A2O2污水处理系统，其特征在于，还包括用于将所述预好氧池中的一部分处理水回流至所述厌氧池的第二回流装置，其中，处理水的回流比为100％～300％。The A 2 O 2 sewage treatment system according to claim 1, further comprising a second reflux device for returning a portion of the treated water in the pre-aerobic tank to the anaerobic tank, The reflux ratio of the treated water is 100% to 300%. 6.根据权利要求1-5任一项所述的A2O2污水处理系统，其特征在于，所述缺氧池、所述厌氧池、所述预好氧池、所述好氧池是由一个箱体构造成的多个分隔池所形成，所述泥水分离设备设置在所述好氧池内，以便于污水处理系统一体移动。The A 2 O 2 sewage treatment system according to any one of claims 1 to 5, wherein the anoxic tank, the anaerobic tank, the pre-aerobic tank, the aerobic tank It is formed by a plurality of compartments constructed by a tank, and the mud-water separation device is disposed in the aerobic tank to facilitate the integral movement of the sewage treatment system. 7.根据权利要求1-5任一项所述的A2O2污水处理系统，其特征在于，所述泥水分离设备包括沉淀池和反硝化生物滤池，所述沉淀池与所述反硝化生物滤池连通，以将沉淀池分离后的处理水进一步去除氨氮和硝酸氮，并且过滤悬浮物。The A 2 O 2 sewage treatment system according to any one of claims 1 to 5, wherein the mud water separation device comprises a sedimentation tank and a denitrification biofilter, the sedimentation tank and the denitrification The biological filter is connected to further remove ammonia nitrogen and nitrogen nitrate from the treated water after the separation tank is separated, and the suspended matter is filtered. 8.根据权利要求6所述的A2O2污水处理系统，其特征在于，所述泥水分离设备包括MBR膜装置，所述MBR膜装置与所述好氧池连通，以通过膜的截留过滤作用来增加所述好氧池中的污泥浓度，并且泥水分离效果好，出水悬浮物低。The A 2 O 2 sewage treatment system according to claim 6, wherein the mud water separation device comprises an MBR membrane device, and the MBR membrane device is in communication with the aerobic tank to filter through a membrane. The function is to increase the sludge concentration in the aerobic tank, and the mud water separation effect is good, and the effluent suspended matter is low. 9.一种A2O2污水处理方法，其特征在于，包括如下步骤：An A 2 O 2 sewage treatment method, comprising the steps of: S1，将污水输送至缺氧池进行反硝化反应以去除硝酸氮；S1, conveying sewage to an anoxic tank for denitrification to remove nitrate nitrogen; S2，将步骤S1得到的处理水流入至厌氧池进行厌氧氨氧化反应以去除氨氮和亚硝酸氮和进行磷的释放；S2, the treated water obtained in step S1 is flowed into an anaerobic tank for anaerobic ammonium oxidation reaction to remove ammonia nitrogen and nitrite nitrogen and release phosphorus; S3，将步骤S2得到的处理水流入至预好氧池，预好氧池内进行优势菌群培养，以主要进行亚硝化反应以将氨氮转化为亚硝酸氮，并有部分亚硝酸氮发生硝化反应转化为硝酸氮；S3, the treated water obtained in step S2 is flowed into the pre-aerobic tank, and the dominant microbial culture is carried out in the pre-aerobic tank to mainly perform nitrosation reaction to convert ammonia nitrogen into nitrite nitrogen, and some nitrifying nitrogen is nitrated. Converted to nitrate nitrogen; S4，将步骤S3得到的处理水流入至好氧池进行硝化反应以将氨氮和亚硝酸氮转化为硝酸氮和进行磷的吸收；以及S4, flowing the treated water obtained in step S3 to an aerobic tank for nitrification to convert ammonia nitrogen and nitrite nitrogen into nitrate nitrogen and performing phosphorus absorption; S5，将步骤S4得到的处理水进行泥水分离处理，S5, the treated water obtained in step S4 is subjected to mud water separation treatment, 其中，步骤S1中的污水分别地输送至所述厌氧池、所述预好氧池和所述好氧池，以分别地向各个生化反应池中提供所需有机碳源。Wherein, the sewage in step S1 is separately delivered to the anaerobic tank, the pre-aerobic tank and the aerobic tank to separately supply a desired organic carbon source to each biochemical reaction tank. 10.根据权利要求9所述的A2O2污水处理方法，其特征在于，输送至所述缺氧池的污水的进水量大于输送至所述厌氧池、所述预好氧池和所述好氧池的污水的进水量。The A 2 O 2 sewage treatment method according to claim 9, wherein the amount of water fed to the anoxic tank is greater than the amount of water fed to the anaerobic tank, the pre-aerobic tank, and the The amount of water entering the aerobic tank. 11.根据权利要求10所述的A2O2污水处理方法，其特征在于，还包括步骤S24，将经过步骤4处理的所述好氧池中的一部分处理水和污泥回流至所述缺氧池，其中，处理水和污泥的回流比均为100％～300％，或泥水混合液的回流比为100％～300％。The A 2 O 2 sewage treatment method according to claim 10, further comprising a step S24 of returning a part of the treated water and the sludge in the aerobic tank treated in the step 4 to the defect The oxygen pool, wherein the reflux ratio of the treated water and the sludge is 100% to 300%, or the reflux ratio of the muddy water mixture is 100% to 300%. 12.根据权利要求10所述的A2O2污水处理方法，其特征在于，还包括步骤S23，将经过步骤3处理的所述预好氧池中的一部分处理水回流至所述厌氧池，其中，处理水的回流比为100％～300％。The A 2 O 2 sewage treatment method according to claim 10, further comprising a step S23 of returning a part of the treated water in the pre-aerobic tank processed in the step 3 to the anaerobic tank Wherein, the reflux ratio of the treated water is 100% to 300%. 13.根据权利要求9所述的A2O2污水处理方法，其特征在于，所述预好氧池的水力停留时间小于或等于所述好氧池的水力停留时间。The A 2 O 2 sewage treatment method according to claim 9, wherein the pre-aerobic tank has a hydraulic retention time less than or equal to a hydraulic retention time of the aerobic tank. 14.根据权利要求9所述的A2O2污水处理方法，其特征在于，所述缺氧池、所述厌氧池、所述预好氧池和所述好氧池中的溶解氧分别地控制为不大于0.5mg/L、不大于0.2mg/L、不大于2mg/L和不小于2.5mg/L。The A 2 O 2 sewage treatment method according to claim 9, wherein the anoxic tank, the anaerobic tank, the pre-aerobic tank, and the dissolved oxygen in the aerobic tank are respectively The ground control is not more than 0.5 mg / L, not more than 0.2 mg / L, not more than 2 mg / L and not less than 2.5 mg / L.
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