CN110228908A - Utilize the sewage water treatment method of A/O-SBR and the combined denitrification dephosphorization of sulphur autotrophic denitrification - Google Patents

Utilize the sewage water treatment method of A/O-SBR and the combined denitrification dephosphorization of sulphur autotrophic denitrification Download PDF

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CN110228908A
CN110228908A CN201910541069.8A CN201910541069A CN110228908A CN 110228908 A CN110228908 A CN 110228908A CN 201910541069 A CN201910541069 A CN 201910541069A CN 110228908 A CN110228908 A CN 110228908A
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denitrification
dephosphorization
sbr
autotrophic denitrification
sulphur autotrophic
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张传义
谢雅琪
袁丽梅
陆娜娜
梁海
季右卿
孟祥钰
马悦
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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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
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • 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
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C02F2101/163—Nitrates
    • 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
    • C02F3/1263—Sequencing batch reactors [SBR]
    • 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
    • C02F3/28—Anaerobic digestion processes
    • C02F3/282—Anaerobic digestion processes using anaerobic sequencing batch reactors
    • 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
    • C02F3/28—Anaerobic digestion processes
    • C02F3/2846—Anaerobic digestion processes using upflow anaerobic sludge blanket [UASB] reactors
    • 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
    • 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)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

The invention discloses a kind of sewage water treatment methods using A/O-SBR and the combined denitrification dephosphorization of sulphur autotrophic denitrification, successively intake to low carbon source urban sewage/anaerobic phosphorus release processing, aerobic phosphorus absorption processing, precipitating water outlet, sulphur autotrophic denitrification denitrogenation collaboration dephosphorization processing.The present invention is by the way that dephosphorization and denitrification process to be placed in two processing units, realize being spatially separating for dephosphorization bacterial, nitrifier and sulphur autotrophic denitrification bacterium, it has ensured microorganism good growing environment in respective system, has solved the problems, such as that sludge age contradiction present in traditional handicraft, nitrate influence；Meanwhile solving the problems, such as to add the sewage treatments operation energy consumption such as carbon source using sulphur autotrophic denitrification denitrification system, achieve the purpose that high-efficient denitrification and dephosphorization.Have many advantages, such as that effluent quality is good, process is simple, low energy consumption, occupied area is small, easy to operate simultaneously.

Description

Utilize the sewage water treatment method of A/O-SBR and the combined denitrification dephosphorization of sulphur autotrophic denitrification
Technical field
It is that one kind is directed to low C/N than municipal sewage progress efficient denitrification the present invention relates to technical field of biological sewage treatment The method of dephosphorization.Specifically a kind of sewage water treatment method using A/O-SBR and the combined denitrification dephosphorization of sulphur autotrophic denitrification.
Technical background
The content of dirty Organic substance in water is to influence a pass of anaerobic phosphorus release in denitrification dephosphorization technique, denitrification denitrogenation effect Key factor.But it counts according to investigations, with the presence of the problem of up to 65% or more sewage treatment plant's carbon source deficiency, this results in sewage In nitrogen and P elements cannot preferably be removed.In addition, since biological denitrificaion and dephosphorization are by entirely different thin of two classes Bacterium is performed, biochemical process be also it is entirely different, their requirements to environmental factor are different, the generally existing carbon of traditional handicraft The problem of source contradiction, sludge age contradiction and nitrate influence, so that the synchronous denitrogenation dephosphorizing efficiency that improves is difficult to coordinate.And sewage discharge Standard is being gradually increased, this just gives the operation of sewage treatment plant, especially TN and the up to standard of TP to increase difficulty.Therefore, locating When managing low ratio of carbon to ammonium municipal sewage, the new of denitrogenation dephosphorizing efficiency is needed to seek to have solution carbon resource shortage problem and improved Technology.
Recently, autotrophic denitrification especially sulphur autotrophic denitrification receives significant attention, and is that one kind is replaced so that lower valency is thio Carbon source is as electron donor, and nitrate or nitrite are as electron acceptor using in water, under the action of autotrophic denitrification bacterium It realizes a kind of denitrifying novel denitrogenation technology, it is low etc. to have the advantages that save carbon source, sludge yield.
SBR method have many advantages, such as simple process, save money, biochemical reaction thrust is big, the method for operation is flexible, so obtain It is widely applied.SBR dephosphorization efficiency with higher, and nitric efficiency is lower, as discharge standard is increasingly stringenter, Yi Jijin The reduction of water C/N, conflict of the SBR method in terms of nitrogen phosphorus ligands are increasing.Therefore by SBR and sulphur autotrophic denitrification tandem compound, Both realized dephosphorization bacterial, denitrifier is spatially separating, improve contaminant removal efficiency, and can solve and ask into carbon source deficiency in water Topic reduces cost of sewage disposal.
In conclusion SBR method and the great developmental research of sulphur autotrophic denitrification combined denitrification dephosphorization are worth, led in sewage treatment Domain has good development and application prospect especially for the removing of low ratio of carbon to ammonium total nitrogen of urban sewage total phosphorus.
Summary of the invention
It is an object of the invention to from solve the problems, such as low-carbon-source and realize high-efficient denitrification and dephosphorization angle improve pass System denitrification dephosphorization technique, proposes a kind of sewage water treatment method using A/O-SBR and the combined denitrification dephosphorization of sulphur autotrophic denitrification, can To improve synchronous denitrification dephosphorizing efficiency, stability and high efficiency denitrogenation dephosphorizing is realized.
Basic ideas are to be combined processing sanitary sewage using A/O-SBR and sulphur autotrophic denitrification, removed using SBR Organic matter, total phosphorus and ammonia nitrogen, subsequent water outlet carry out denitrogenation by sulphur autotrophic denitrification.By biological phosphate-eliminating and biological denitrification process point It is placed in front of and after SBR, sulphur autotrophic denitrification packed bed in two systems, realizes that dephosphorization bacterial, denitrifier are spatially separating, and denitrogenation The nitrate that generation is nitrified in system does not enter Biological Phosphorus Removal System, while solving sludge age contradiction and eliminating nitrate interference dephosphorization The problem of process, achievees the purpose that efficient dephosphorization.The denitrogenation of sulphur autotrophic denitrification, sulphur autotrophic denitrification are selected in postposition denitrogenation part Bacterium utilizes inorganic carbon source, and using low price sulphur as electron donor, nitrate carries out denitrification denitrogenation, success as electron acceptor Solves the problems, such as carbon source deficiency.Wherein, Biological Phosphorus Removal System is enriched with dephosphorization bacterial using sbr reactor device, passes through anaerobic-aerobic The mode of alternate run carries out anaerobic phosphorus release and aerobic phosphorus absorption, excludes excess sludge and completes dephosphorization process.Biological denitrification system, Suspended biological filler is loaded in up flow type packed bed reactor, for fixing sulphur autotrophic denitrification bacterium, passes through sulphur autotrophic denitrification Complete denitrification process.In addition, sulphur autotrophic denitrification process is along with FeS2Oxidation, generate Fe in the process2+、Fe3+Equal cations Chemical precipitation, while Fe occurs with phosphate2+、Fe3+Deng hydrolysis generate Fe (OH)3Isocolloid traps phosphate in water, real Existing deep phosphorous removal finally makes to be discharged qualified discharge.
The present invention uses A/O-SBR C/N municipal sewage low with sulphur autotrophic denitrification packed bed tandem compound process, according to Conditioning tank, A/O-SBR, intermediate water tank, up flow type sulphur autotrophic denitrification packed bed is arranged in secondary concatenation, using batch-type and continuous flow In conjunction with the method for operation, each reactor carries out simultaneously, continuous effluent.
The present invention be realize goal of the invention the technical solution adopted is that, combined using A/O-SBR with sulphur autotrophic denitrification and taken off The sewage water treatment method of nitrogen dephosphorization, it is characterized in that: successively intake to C/N than municipal sewage/anaerobic phosphorus release processing, aerobic suction Phosphorus processing, precipitating water outlet, sulphur autotrophic denitrification denitrogenation collaboration dephosphorization processing.
The time-consuming of various processes is successively are as follows: water inlet/anaerobic phosphorus release handles 1.5h, aerobic phosphorus absorption and nitrification processing 4h, sinks Form sediment processing 0.5h, 6~8h of sulphur autotrophic denitrification denitrogenation processing.
The water inlet/anaerobic phosphorus release treatment process is the sewage in conditioning tank to be pumped into sbr reactor device, and pass through machine Tool blender mixes muddy water, forms an anaerobic environment, and polyP bacteria (PAOs) absorbs the organic matter in sewage and with poly- at this time The form of hydroxy fatty acid (PHB) is stored in intracellular while discharging intracorporal phosphate.
The aerobic phosphorus absorption and nitrifying process are to terminate to carry out in sbr reactor device Anaerobic Treatment to Aerobic Process for Treatment, pass through drum Blower supplies oxygen the microorganism in sbr reactor device, and PAOs is using the PHB stored in vivo as carbon source, with the oxygen in water As electron acceptor, the intracorporal PHB of oxygenolysis obtains energy, the excessive consumption phosphorus from mixed liquor；Simultaneous Nitrification bacterium utilizes Organic substrates in mixed liquor carry out nitration reaction for NH4 +- N is converted into NO3 -。
The precipitating exiting water process, sbr reactor device stops aeration and stirring, after staticly settling a period of time, in a part Clear liquid is discharged into intermediate water tank by solenoid valve, periodically by sludge pump using the rich phosphorous sludge in sbr reactor device as excess sludge It excludes to carry out dephosphorization.
The sulphur autotrophic denitrification denitrification process is that intermediate water tank water outlet is pumped into up flow type sulphur autotrophic denitrification packed bed In, using low price sulphur as electron donor, nitrate carries out anti-the autotrophic denitrification bacterium being enriched in reactor as electron acceptor Nitrify denitrogenation.
The collaboration dephosphorization process, sulphur autotrophic denitrification process is along with FeS2Oxidation, generate Fe therewith2+、Fe3+Equal sun Chemical precipitation, while Fe occur for ion and phosphate2+、Fe3+Deng hydrolysis generate Fe (OH)3Isocolloid traps phosphate in water, Realize deep phosphorous removal.
The utility model has the advantages that
Firstly, present invention improves over traditional denitrification dephosphorization technique, biological phosphate-eliminating and biological denitrification process are placed in two sets of front and back In system, realize that dephosphorization bacterial, sulphur autotrophic denitrification bacterium are spatially separating, to a certain extent avoid dephosphorization, denitrification microorganism it Between influence each other, ensured microorganism good growing environment in respective system, strengthened denitrification effect and phosphor-removing effect, from And realize high-efficient denitrification and dephosphorization efficiency；It is nitrified secondly, Biological Phosphorus Removal System is arranged in shorter sludge age and subsequent denitrification system The nitrate of generation does not enter dephosphorization system, solves the problems, such as that nitrate interferes dephosphorization, ensure that the efficient fortune of system dephosphorization Row.Postposition denitrogenation part, selects sulphur autotrophic denitrification bacterium autotrophic denitrification, and sulphur autotrophic denitrification bacterium is supplied using low price sulphur as electronics Body, nitrate carry out denitrification denitrogenation as electron acceptor, guarantee that system also can efficient operation under low ratio of carbon to ammonium.In addition, sharp With Installed System Memory sulphur autotrophic denitrification and ferrous autotrophic denitrification maintain acid-base balance in water, improve autotrophic denitrification denitrogenation Fe is precipitated while efficiency2+、Fe3+And Fe (OH)3Deng being removed using ore absorption, ion precipitation and microbial assimilation depth of interaction Phosphorus.Finally, the suspended biological filler added in up flow type packed bed, sulphur autotrophic denitrification bacterium can apposition growth thereon, always Optimum growh state is kept, and does not need sludge agitation equipment, the high concentration of microorganism can be kept, hence it is evident that improves denitrification effect. In short, the technique is with low energy consumption, high-efficient, process is simple, biological concentration is high, occupied area is small, water outlet water compared with traditional handicraft The advantages that matter is good, the upgrading of exploitation and existing treatment process to low ratio of carbon to ammonium new urban sewage treatment process have important Directive significance.
Detailed description of the invention
Fig. 1 is the sewage water treatment method technique stream that the present invention utilizes A/O-SBR and the combined denitrification dephosphorization of sulphur autotrophic denitrification Cheng Tu.
In figure: 1- conditioning tank, 2-SBR reactor, 3- intermediate water tank, 4- sulphur autotrophic denitrification packed-bed reactor, 5- water tank, 6- intake pump, 7- sludge pump, 8- solenoid valve, 9- mechanical agitator, 10- air blower.
Specific embodiment
With reference to the accompanying drawings and examples, the invention will be further described.
As shown in Figure 1, the present invention utilizes the sewage water treatment method of A/O-SBR and the combined denitrification dephosphorization of sulphur autotrophic denitrification. A/O-SBR and sulphur autotrophic denitrification packed bed tandem compound high-efficient denitrification and dephosphorization, using conditioning tank 1, sbr reactor device 2, intermediate water Case 3, sulphur autotrophic denitrification packed-bed reactor 4, water tank 5, are sequentially connected in series to form processing system.Wherein sulphur autotrophic denitrification is filled out Expect to load suspended biological filler in bed reactor 4, for being enriched with autotrophic microbe.
Sequencing batch operation mode is first used, low C/N sanitary sewage imports sbr reactor device 2 from conditioning tank 1, in reactor Anaerobism, Aerobic Process for Treatment are successively carried out in chronological order, and after eventually passing through precipitating, water is discharged by intermediate water tank 3 by solenoid valve 9. Water in intermediate water tank 3 is imported up flow type sulphur autotrophic denitrification by intake pump 6 and filled out by the method for operation for then using continuous flow Expect bed reactor 4, is discharged eventually by water outlet, into water tank 5.Entire process flow include water inlet/anaerobic phosphorus release process, Aerobic phosphorus absorption and nitrifying process, precipitating water outlet and regular spoil disposal, sulphur autotrophic denitrification denitrification process, collaboration five mistakes of dephosphorization process Journey.
Carrying out practically process:
1, the sewage in conditioning tank 1: being pumped into sbr reactor device 2 by water inlet/anaerobic phosphorus release treatment process by intake pump 6, and Mix muddy water by mechanical agitator 9, polyP bacteria (PAOs) absorbs the organic matter in sewage and with poly-hydroxy fatty acid at this time (PHB) form is stored in intracellular while discharging intracorporal phosphate.
2, aerobic phosphorus absorption and nitrifying process: Anaerobic Treatment terminates to carry out to Aerobic Process for Treatment, by air blower 10 to SBR at this time Microorganism in reactor 2 is supplied oxygen, and PAOs is using the PHB stored in vivo as carbon source, using the oxygen in water as electronics Receptor, the intracorporal PHB of oxygenolysis obtain energy, the excessive consumption phosphorus from mixed liquor；Simultaneous Nitrification bacterium is using in mixed liquor Organic substrates carry out nitration reaction for NH4 +- N is converted into NO3 -。
3, precipitating water outlet and periodically spoil disposal process: after precipitating a period of time, during a part of supernatant is discharged by solenoid valve 8 Between water tank 3, periodically the rich phosphorous sludge of 5%-10% in sbr reactor device 2 is removed as excess sludge by sludge pump 7 Phosphorus.
4, the water outlet of intermediate water tank 3 sulphur autotrophic denitrification denitrification process: is pumped into up flow type sulphur autotrophic denitrification packed bed 4 In, the autotrophic denitrification bacterium that is enriched in reactor is using reactor middle or low price sulphur as electron donor, nitrate conduct in water inlet Electron acceptor completes denitrification denitrogenation.
5, cooperate with dephosphorization process: sulphur autotrophic denitrification process is along with FeS2Oxidation, generate Fe therewith2+、Fe3+Deng sun from With phosphate chemical precipitation, while Fe occur for son2+、Fe3+Deng hydrolysis generate Fe (OH)3Isocolloid traps phosphate in water, real Existing deep phosphorous removal.
The technique first uses the method for operation of batch-type, and sewage is pumped into sbr reactor device 2 and carries out to anaerobism section being detested first Oxygen releases the degradation of phosphorus and organic matter；Subsequent system is run to aerobic section, aerobic phosphorus absorption and nitration reaction is carried out, by precipitate phase It is drained afterwards by solenoid valve to intermediate water tank 3.Intermediate water tank 3 plays the role of separating biological carbon and phosphorous removal two systems, It is subsequent to enter biological denitrification system.Using the method for operation of continuous flow, the water outlet of intermediate water tank 3 is pumped into the anti-nitre of up flow type sulphur autotrophy Change in packed bed 4, the autotrophic denitrification bacterium that is enriched in reactor is using reactor middle or low price sulphur as electron donor, nitre in water inlet Hydrochlorate completes denitrification denitrogenation as electron acceptor.Meanwhile in entire filler, FeS2Oxidation process constantly generate Fe2+、 Fe3+Chemical precipitation occurs Deng cation and phosphate, in addition Fe2+、Fe3+Deng hydrolysis generate Fe (OH) 3 isocolloid, trap water Middle phosphate, realizes deep phosphorous removal, and water outlet enters water tank 5 eventually by water outlet.The whole service period is about 12~14h, Wherein water inlet/anaerobic stages 1.5h, aerobic stage 4h, precipitating water outlet 0.5,6~8h of sulphur autotrophic denitrification packed-bed reactor.

Claims (7)

1. a kind of sewage water treatment method using A/O-SBR and the combined denitrification dephosphorization of sulphur autotrophic denitrification, it is characterized in that: to C/N Successively intake than municipal sewage/anaerobic phosphorus release is handled, aerobic phosphorus absorption processing, precipitating is discharged, sulphur autotrophic denitrification denitrogenation is assisted It is handled with dephosphorization.
2. the sewage water treatment method according to claim 1 using A/O-SBR and the combined denitrification dephosphorization of sulphur autotrophic denitrification, It is characterized in that: water inlet/anaerobic phosphorus release handles 1.5h, aerobic phosphorus absorption and nitrification processing 4h, precipitation process 0.5h, sulphur autotrophic denitrification 6~8h of denitrogenation processing.
3. the sewage water treatment method according to claim 1 using A/O-SBR and the combined denitrification dephosphorization of sulphur autotrophic denitrification, It is characterized in that: the water inlet/anaerobic phosphorus release treatment process, is that the sewage in conditioning tank is pumped into sbr reactor device, and passes through Mechanical agitator mixes muddy water, forms an anaerobic environment, and polyP bacteria PAOs absorbs the organic matter in sewage and with poly- at this time The form of hydroxy fatty acid PHB is stored in intracellular while discharging intracorporal phosphate.
4. the sewage water treatment method according to claim 1 using A/O-SBR and the combined denitrification dephosphorization of sulphur autotrophic denitrification, It is characterized in that: the aerobic phosphorus absorption and nitrifying process, are to terminate to carry out in sbr reactor device Anaerobic Treatment to Aerobic Process for Treatment, pass through Air blower supplies oxygen the microorganism in sbr reactor device, and PAOs is using the PHB stored in vivo as carbon source, with the oxygen in water Gas obtains energy, the excessive consumption phosphorus from mixed liquor as electron acceptor, the intracorporal PHB of oxygenolysis；Simultaneous Nitrification bacterium benefit Nitration reaction is carried out by NH with the organic substrates in mixed liquor4 +- N is converted into NO3 -。
5. the sewage water treatment method according to claim 1 using A/O-SBR and the combined denitrification dephosphorization of sulphur autotrophic denitrification, It is characterized in that: the precipitating exiting water process, sbr reactor device stops aeration and stirring, after the time for staticly settling setting, on part Clear liquid is discharged into intermediate water tank by solenoid valve, periodically by sludge pump using the rich phosphorous sludge in sbr reactor device as excess sludge It excludes to carry out dephosphorization.
6. the sewage water treatment method according to claim 1 using A/O-SBR and the combined denitrification dephosphorization of sulphur autotrophic denitrification, It is characterized in that: the sulphur autotrophic denitrification denitrification process, is that intermediate water tank water outlet is pumped into up flow type sulphur autotrophic denitrification filler In bed, using low price sulphur as electron donor, nitrate carries out the autotrophic denitrification bacterium being enriched in reactor as electron acceptor Denitrification denitrogenation.
7. the sewage water treatment method according to claim 1 using A/O-SBR and the combined denitrification dephosphorization of sulphur autotrophic denitrification, It is characterized in that: the collaboration dephosphorization process, sulphur autotrophic denitrification process is along with FeS2Oxidation, generate Fe therewith2+、Fe3+Sun Chemical precipitation, while Fe occur for ion and phosphate2+、Fe3+Hydrolysis generate Fe (OH)3Colloid traps phosphate in water, realizes Deep phosphorous removal.
CN201910541069.8A 2019-06-21 2019-06-21 Utilize the sewage water treatment method of A/O-SBR and the combined denitrification dephosphorization of sulphur autotrophic denitrification Pending CN110228908A (en)

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CN111606419A (en) * 2020-06-01 2020-09-01 北京工业大学 Sewage treatment system and method with self-sufficient energy
CN111777179A (en) * 2020-06-29 2020-10-16 北京工业大学 A/O coupling sulfur autotrophic denitrification enhanced low-carbon-nitrogen-ratio sewage nitrogen and phosphorus removal device and method
CN114769296A (en) * 2022-05-20 2022-07-22 中国环境科学研究院 Method and system for culturing PHA (polyhydroxyalkanoate) granular sludge by using organic waste fermentation liquor
CN115432818A (en) * 2021-06-03 2022-12-06 北京大有汇泽科技有限公司 Enhanced denitrification biological treatment method for sewage
CN116477760A (en) * 2023-04-17 2023-07-25 北京天佑泽环保科技有限公司 Method and system for treating waste liquid

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