CN101172736A - Intermittent aerating biological filter seprobia dephosphorization technique - Google Patents
Intermittent aerating biological filter seprobia dephosphorization technique Download PDFInfo
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- CN101172736A CN101172736A CNA2007100928941A CN200710092894A CN101172736A CN 101172736 A CN101172736 A CN 101172736A CN A2007100928941 A CNA2007100928941 A CN A2007100928941A CN 200710092894 A CN200710092894 A CN 200710092894A CN 101172736 A CN101172736 A CN 101172736A
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- biological filter
- intermittent aeration
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- 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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Abstract
The invention relates to a dephosphorization technique for sewage organisms in an intermittent air-exposition biologic filtering pond, with the adoption of a sewage treatment system orderly consisting of a fixed bed anaerobic biologic filtering pond and an intermittent air-exposition biologic filtering pond. The intermittent air-exposition biologic filtering pond discharges an anaerobic reaction liquid rich in phosphor, namely, the anaerobic liquid rich in phosphor, when the anaerobic phase comes to an end, and the water is taken in continuously during the aerobic phase. Two intermittent air-exposition biologic ponds are aligned, and two filtering ponds are crossed for work. Each intermittent air-exposition biologic pond circularly works according to the time limit of the arranged intermittent air exposition period, and the whole system achieves the continuous water intake and outtake. The technique has simple and convenient operation and lowoperational cost, and can effectively eliminate the phosphor in the sewage. Compared with the prior dephosphorization technique, the invention adopts the method of the discharge of the anaerobic liquid rich in phosphor rather than the aerobic biologic cells rich in phosphor to remove the phosphor in the intermittent air-exposition biologic filtering pond. The dephosphorization property of the reactor does not depend on the anti-washing, the work period of the reactor is effectively prolonged, and the energy consumption during the anti-washing of the filtering pond is reduced.
Description
Technical field
The invention belongs to sewage treatment area, be specifically related to a kind of biological phosphate-eliminating technology sewage.
Background technology
BAF has good oxidation of coal and nitrogen oxidation capacity, but bad to the removal effect of phosphorus.Because BAF does not possess polyP bacteria to the required envrionment conditions of growing, the removal of phosphorus is mainly realized that by the mode of microorganism growth metabolic demand or the physics crown_interception of filtering layer clearance is low.And by not aeration/aeration alternative envrionment conditions is provided in the biological filter, can be in reactor the enrichment polyP bacteria.Its reason is, in the biological phosphate-eliminating process of aerobic/anaerobic, polyP bacteria carbon source is outside supplied with under the plentiful anaerobic condition, and the rapid absorption organic substrate also stores poly (hydroxy alkanoate) in vivo, decomposes poly-phosphate simultaneously and discharges phosphoric acid salt.At back to back aerobic stage, outer carbon source is approach exhaustion, and at this moment polyP bacteria just utilizes the poly (hydroxy alkanoate) that stores in the body to be the energy and carbon source for growth, and picked-up phosphoric acid salt synthesizes new poly-phosphate from environment.
At present, the system that is adopted in the research of the microbial film dephosphorization process report is divided into two classes: a class is the sequence batch (reactive system, and promptly anaerobism, aerobic processes carry out in chronological order successively; The another kind of continuous-flow system that then adopts a plurality of reactors in series is promptly realized replacing of aerobic/anaerobic by periodically-varied water (flow) direction and aeration mode in each reactor.In this periodicity adjustment process, raw waste water always at first enters anaerobic reactor, and aerobic reactor always is connected on after the anaerobic reactor.In biofilm reactor, attached growth of microorganisms is at carrier surface, this growth pattern has determined the phosphorus of enrichment in the microbial film to be shifted out from system in the biological phosphate-eliminating process must be by the back flushing approach, promptly removes the part biological film that filling surface adheres to and realizes.Some microbial film dephosphorization systems carry out once or carried out one time in per 2～3 days backwash operation every day in order to obtain phosphor-removing effect preferably.The frequency of back flushing and degree have determined the removal effect and the energy consumption of biofilm reactor phosphorus.Biomembranous the removing of rich phosphorus is the critical limitation factor of microbial film phosphorus removal property.Therefore, effective dephosphorization is very necessary to frequent backwash process to biofilm reactor, but this can increase the back flushing energy consumption, and the operation of meeting EVAC (Evacuation Network Computer Model).
Summary of the invention
The objective of the invention is to propose a kind of easy and simple to handle, running cost is low, can effectively remove the intermittent aerating biological filter seprobia dephosphorization technique of the phosphorus in the sewage.
The intermittent aerating biological filter seprobia dephosphorization technique that the present invention proposes, the system that adopts fixed bed anaerobic biofilter and intermittent aeration biological filter to form successively disposes of sewage.Adopt the mode of discharging the rich phosphorus liquid of anaerobism to remove the phosphorus of enrichment in the intermittent aeration biological filter.This technology may further comprise the steps:
1, the anaerobic biofilter stage: raw waste water is at first entered the fixed bed anaerobic biofilter via sewage collection system, after anaerobic acidification is handled, enter the intermittent aeration biological filter.In this stage, enter the larger molecular organics in the raw waste water in filter tank, and the organic composition in the particulate matter that is retained down by filtering layer is in the acidifying of anaerobic environment bottom fermentation, can improve the content of voltaile fatty acid in the water outlet of filter tank, for the enrichment and growth of polyP bacteria in the follow-up flow process provides favourable matrix condition.
2, the intermittent aeration biological filter stage: in this stage is start-stop and the working time of utilizing the gas blower of time relay control intermittent aeration biological filter, can in reactor, create aerobic/anaerobic alternative envrionment conditions, thereby help the enrichment and growth of polyP bacteria in reactor.
The intermittent aeration loop cycle of intermittent aeration biological filter comprises two stages of anaerobic and aerobic.In an aeration loop cycle lasted, the operation scheme in intermittent aeration pond was as follows:
(1) the intermittent aeration biological filter is introduced into the anaerobic stages of intermittent aeration loop cycle, and anaerobism adopts quick water intake mode beginning, starts the reaction solution recycle pump, and gas blower is aeration not, intermittent operation.The easy degraded organic matter that polyP bacteria is used in the water fast stores carbon source in vivo, discharges the phosphoric acid salt that produces in the anaerobic metabolism process simultaneously in reaction solution.
(2) when anaerobic stages finishes, the phosphate concn of anaerobic reaction liquid reaches the highest, stops internal recycle, and polyP bacteria is released the rich phosphorus liquid of anaerobism all discharges from this intermittent aeration biological filter that the phosphorus effect forms, and adopts the chemical process individual curing in addition.
(3) at back to back aerobic stage, adopt quick water intake mode aerobic beginning, allows raw waste water directly enter the intermittent aeration pond, starts gas blower, intermittent operation.Thereby polyP bacteria picked-up phosphoric acid salt reduces the phosphorus content in the sewage in aerobic environment.In order to obtain stable water outlet, adopt the intermittent mode operation in the aerobic starting stage, the phosphorus content in the reaction solution can significantly reduce at short notice.
(4) enter the aerobic Continuous Flow stage after this, i.e. fixed bed anaerobic biofilter water outlet enters the intermittent aeration pond continuously, simultaneously intermittent aeration pond continuous effluent.
When (5) finishing, close entering water electromagnetic valve and gas blower, stop into water, discharge the aerobic reaction liquid in the intermittent aeration pond to the aerobic stage.So far, the intermittent aeration pond operation that aeration period lasts that is through with.
Above-mentioned intermittent aeration biological filter is set up in parallel two, two intermittent aeration pond alternate runs.When an intermittent aeration pond is in aerobic Continuous Flow run duration, another intermittent aeration pond experiences anaerobism intermittent operation and aerobic intermittent operation stage just successively.When an intermittent aeration pond aerobic stage end of run, another intermittent aeration pond begins to enter the aerobic Continuous Flow operation phase.The setting that lasted according to the intermittent aeration cycle in each intermittent aeration pond moves again and again, and total system can realize continuous water-inlet continuous water-outlet.The water inlet in intermittent aeration pond and drain operation all have magnetic valve and time switch to control.
Compare with the existing biofilms dephosphorization technique, the intermittent aerating biological filter seprobia dephosphorization technique that the present invention proposes has the following advantages:
(1) utilized the metabolic characteristics of polyP bacteria under the aerobic/anaerobic alternate environment, the phosphorus that aerobic stage is enriched in the microbial film is transferred in the anaerobic reaction liquid by the anaerobic phosphorus release process, and the mode by discharging the rich phosphorus liquid of anaerobism rather than the mode of discharging aerobic rich phosphorus biomass cells remove the phosphorus of enrichment in the reactor.So the removal of intermittent aeration biological filter phosphorus does not rely on backwash process, phosphorus removal property does not rely on the frequency of backwash operation.
(2) adopt this technology, the reactive system resistance to overload shock, adaptability is strong, operating performance is stable, and the water outlet phosphorus content can reach state sewage emission standard; Effectively the cycle of operation of extension reactor, significantly reduce the back flushing frequency, thereby reduce the energy consumption of backwash process.
(3) on operation scheme, the intermittent aeration loop cycle lasts and the duration distribution of anaerobic stages and aerobic stage is adjustable, aerobic stage is handled load and also can be adjusted, this had both had the characteristics of sequence batch (reactive system flexible operation, had the big characteristics of Continuous Flow reactive system processing power again.
(4) the intermittent aeration pond the anaerobic stages utilization be organic matter in the anaerobic biofilter water outlet, do not need additionally to add carbon source.Whole reactor has all experienced complete anaerobic phosphorus release and aerobic suction phosphorus process, has improved the dephosphorization efficiency by using of system.
(5) chemical treatment of the rich phosphorus liquid of anaerobism is carried out separately, can not influence the operation in biological phosphate-eliminating stage.Simultaneously, the discharge of the rich phosphorus liquid of anaerobism provides a kind of valid approach for the recycling of phosphorus in the Sewage treatment systems.
Description of drawings
Fig. 1 is the intermittent aerating biological filter seprobia dephosphorization technique schematic flow sheet.
Embodiment
The present invention will be further described below in conjunction with drawings and Examples:
Referring to Fig. 1, present method is to adopt fixed bed anaerobic biofilter 1 and two intermittent aeration biological filters 2 and 3 systems that form successively to dispose of sewage, and is provided with filler 4 in each filter tank, and intermittent aeration biological filter 2 and 3 is provided with circulation device 5.In this system, two intermittent aeration biological filters 2 and 3 paired runnings, each intermittent aeration pond is not aeration/aeration operation periodically alternately, and the cycle life of operation every day depends on the setting of intermittent aeration loop cycle.The water inlet in intermittent aeration pond utilizes the liquid level difference between reactor, does not need conveying equipment for fluid substances.Sewage treatment process is as follows:
Raw waste water at first enters fixed bed anaerobic biofilter 1 via sewage collection system, enters intermittent aeration biological filter 2 after anaerobic acidification is handled.At the anaerobic stages of intermittent aeration loop cycle, anaerobism adopts quick water intake mode beginning, controls flooding quantity by the opening and closing time of control magnetic valve 61, starts the reaction solution recycle pump, intermittent operation.When anaerobic stages finishes, stop internal recycle, polyP bacteria is released the rich phosphorus liquid of anaerobism all discharges from intermittent aeration biological filter 2 that the phosphorus effect forms.At back to back aerobic stage, adopt the intermittent mode operation in the initial 1h, promptly adopt quick water intake mode aerobic beginning, raw waste water directly enters intermittent aeration biological filter 2, opening and closing time by control magnetic valve 62 is controlled flooding quantity, starts the gas blower intermittent operation.After one hour, begin to enter the aerobic Continuous Flow operation phase, the entering water electromagnetic valve 62 of intermittent aeration biological filter 2 is opened, and the water outlet of fixed bed anaerobic biofilter 1 enters intermittent aeration biological filter 2 continuously, simultaneously intermittent aeration biological filter 2 continuous effluent.When finishing, close entering water electromagnetic valve 62 and gas blower, discharge the aerobic reaction liquid in the intermittent aeration biological filter 2 to the aerobic stage.So far, intermittent aeration biological filter 2 operation that the intermittent aeration loop cycle lasts that is through with.
Intermittent aeration biological filter 2 and 3 alternate runs.When intermittent aeration pond 2 is in aerobic Continuous Flow run duration, intermittent aeration pond 3 experiences anaerobism intermittent operation and aerobic intermittent operation stage just successively.When the 2 aerobic stage end of runs of intermittent aeration pond, intermittent aeration pond 3 begins to enter the aerobic Continuous Flow operation phase.Two filter tanks adopt identical loop cycles to last, and each filter tank is lasted setting according to the aeration loop cycle and moved again and again, and total system can realize continuous water-inlet continuous water-outlet.
Main technical details:
System's hydraulic detention time (in the anaerobic biofilter water inlet): 4.6～25.2h;
Intermittent aeration biological filter intermittent aeration loop cycle lasts: 6～8h;
Wherein: anaerobic stages (containing into water water discharge time) 2～3h,
Aerobic stage (containing into water water discharge time) 4～5h.
The intermittent aeration biological filter cycle of operation: 13～27d;
Filler type: enzymatic living beings filler.
Claims (1)
1. intermittent aerating biological filter seprobia dephosphorization technique, the system that this process using fixed bed anaerobic biofilter and intermittent aeration biological filter are formed successively disposes of sewage, adopt the mode of discharging the rich phosphorus liquid of anaerobism to remove the phosphorus of enrichment in the intermittent aeration biological filter, technology may further comprise the steps:
(1) raw waste water at first enters the fixed bed anaerobic biofilter via sewage collection system, enters the intermittent aeration biological filter after anaerobic acidification is handled;
(2) the intermittent aeration biological filter is introduced into the anaerobic stages of intermittent aeration loop cycle, and anaerobism adopts quick water intake mode beginning, starts the reaction solution recycle pump, intermittent operation;
(3) when anaerobic stages finishes, stop internal recycle, polyP bacteria is released the rich phosphorus liquid of anaerobism all discharges from this intermittent aeration biological filter that the phosphorus effect forms;
(4) and then begin aerobic stage, adopt quick water intake mode aerobic beginning, allows raw waste water directly enter the intermittent aeration biological filter, starts gas blower, intermittent operation;
(5) enter the aerobic Continuous Flow operation phase then, open entering water electromagnetic valve, make the water outlet of fixed bed anaerobic biofilter enter the intermittent aeration biological filter continuously, simultaneously intermittent aeration biological filter continuous effluent;
When (6) finishing to the aerobic stage, close entering water electromagnetic valve and gas blower, discharge the aerobic reaction liquid in this intermittent aeration biological filter, so far, the operation that the intermittent aeration loop cycle lasts is finished in the intermittent aeration biological filter:
Above-mentioned intermittent aeration biological filter is set up in parallel two, two filter tank alternate runs, and when an intermittent aeration biological filter is in aerobic Continuous Flow run duration, another intermittent aeration biological filter experiences anaerobism intermittent operation and aerobic intermittent operation stage just successively; When an intermittent aeration biological filter aerobic stage end of run, another intermittent aeration biological filter begins to enter the aerobic Continuous Flow operation phase; The setting that lasted according to the intermittent aeration cycle each intermittent aeration biological filter moves again and again, and total system realizes continuous water-inlet continuous water-outlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100928941A CN100551852C (en) | 2007-10-26 | 2007-10-26 | Intermittent aerating biological filter seprobia dephosphorization technique |
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| CNB2007100928941A CN100551852C (en) | 2007-10-26 | 2007-10-26 | Intermittent aerating biological filter seprobia dephosphorization technique |
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| CN101172736A true CN101172736A (en) | 2008-05-07 |
| CN100551852C CN100551852C (en) | 2009-10-21 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792207B (en) * | 2010-02-11 | 2011-06-15 | 农业部环境保护科研监测所 | Gas-sealing type bioreactor for treating drained organic water |
| CN102503035A (en) * | 2011-11-09 | 2012-06-20 | 东华大学 | Biological phosphorus accumulating and phosphorus recycling method for treating phosphorus-containing liquid waste |
| CN107973402A (en) * | 2017-11-28 | 2018-05-01 | 华夏碧水环保科技有限公司 | Pulling flow type AO reactors |
| CN108892310A (en) * | 2018-06-28 | 2018-11-27 | 贵州大学 | A kind of aeration treatment apparatus that sewage is used for agricultural irrigation |
| CN109052868A (en) * | 2018-10-10 | 2018-12-21 | 云南滇清环境科技有限公司 | A kind of continuous alternating MBBR sewage water treatment method and equipment |
| CN115259337A (en) * | 2021-04-30 | 2022-11-01 | 辽河石油勘探局有限公司 | High-polymer-content heavy oil sewage deep aeration treatment system |
-
2007
- 2007-10-26 CN CNB2007100928941A patent/CN100551852C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792207B (en) * | 2010-02-11 | 2011-06-15 | 农业部环境保护科研监测所 | Gas-sealing type bioreactor for treating drained organic water |
| CN102503035A (en) * | 2011-11-09 | 2012-06-20 | 东华大学 | Biological phosphorus accumulating and phosphorus recycling method for treating phosphorus-containing liquid waste |
| CN107973402A (en) * | 2017-11-28 | 2018-05-01 | 华夏碧水环保科技有限公司 | Pulling flow type AO reactors |
| CN107973402B (en) * | 2017-11-28 | 2020-12-11 | 华夏碧水环保科技有限公司 | Plug flow type AO reactor |
| CN108892310A (en) * | 2018-06-28 | 2018-11-27 | 贵州大学 | A kind of aeration treatment apparatus that sewage is used for agricultural irrigation |
| CN109052868A (en) * | 2018-10-10 | 2018-12-21 | 云南滇清环境科技有限公司 | A kind of continuous alternating MBBR sewage water treatment method and equipment |
| CN115259337A (en) * | 2021-04-30 | 2022-11-01 | 辽河石油勘探局有限公司 | High-polymer-content heavy oil sewage deep aeration treatment system |
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| CN100551852C (en) | 2009-10-21 |
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Granted publication date: 20091021 Termination date: 20101026 |