CN102557250B - Biogas circulating electromagnetic anaerobic membrane bio-reactor for wastewater treatment - Google Patents
Biogas circulating electromagnetic anaerobic membrane bio-reactor for wastewater treatment Download PDFInfo
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- CN102557250B CN102557250B CN2012100149093A CN201210014909A CN102557250B CN 102557250 B CN102557250 B CN 102557250B CN 2012100149093 A CN2012100149093 A CN 2012100149093A CN 201210014909 A CN201210014909 A CN 201210014909A CN 102557250 B CN102557250 B CN 102557250B
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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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 discloses a biogas circulating electromagnetic anaerobic membrane bio-reactor for wastewater treatment. A reaction tank is separated into a main reaction area and a membrane separation area; the main reaction area and the membrane separation area are communicated at the bottom of the reaction tank; the top in the reaction tank is provided with a biogas collection area; magnetic biological carriers are added into the reaction tank; electrode plates and guide plates are arranged in the main reaction area; the electrode plates are connected with a direct current power supply; membrane components and a membrane washing device are arranged in the membrane separation area; one end of a biogas circulating system on the outer top of the reaction tank is connected with the biogas collection area, and the other end of the biogas circulating system is connected with the membrane washing device; the bottom of the reaction tank is provided with a sludge hopper and a wastewater distribution system; the wastewater distribution system is connected with a wastewater pipeline and a wastewater circulating system; and the water inlet of the wastewater circulating system is communicated with the upper part of the main reaction area of the reaction tank. By the wastewater distribution system, membrane pollution can be reduced, the service life of the membranes is prolonged, and the capacity of treating toxic refractory pollutants of the anaerobic membrane bio-reactor is enhanced.
Description
Technical field
The invention belongs to water and pollute processing and prevention and control field, be specifically related to a kind of biogas circulating electromagnetic anaerobic membrane bioreactor for wastewater treatment.
Background technology
Anaerobic membrane bioreactor (Anaerobic Membrane Bio-Reactor, be called for short AMBR) be the new type water treatment technology that a kind of anaerobe technology combines with the high performance membrane isolation technique, it mainly is to utilize the membrane module of being immersed in the anaerobe pond to realize solid-liquid separation, holds back anaerobion and larger molecular organics in the pond.This technology has the larger molecular organics that keeps high microorganism concentration, improve the reactor organic loading, reduce the sewage treatment facility floor space, reduce surplus sludge volume, make some difficult degradations because the advantage such as decomposed to greatest extent in the prolongation of the residence time of reactor.But keeping away unavoidable membrane pollution problem has become the important factor that hinders the fast development of AMBR technology.AMBR can be divided into two kinds of separated type AMBR and integral type AMBR, wherein separated type help equipment cleaning, change, set up, but the shearing force that the high speed rotating of recycle pump produces can make the certain micro-organisms thalline produce deactivation phenomenom; Integral type is not used the mixed solution recycle pump, can save circulation and configure with pipeline, but film cleans comparatively difficulty, and membrane pollution problem is difficult to resolve determines.At present, the research of AMBR technology will concentrate on: research and the prevention of (1) film pollution mechanism; (2) research and development of novel film materials; (3) further raising of level of automation etc.
Summary of the invention
The object of the invention is for the defects that exists in the prior art, provides a kind of and can reduce work-ing life that film pollutes, prolongs film, reinforced anaerobic membrane bioreactor to the biogas circulating electromagnetic anaerobic membrane bioreactor of the processing power of poisonous difficult degradation pollutent.
The present invention seeks to realize by the following technical solutions: the biogas circulating electromagnetic anaerobic membrane bioreactor that should be used for wastewater treatment, it comprises a reaction tank, the top of reaction tank is separated into main reaction region and membrane separation zone, main reaction region and membrane separation zone are in the bottom of reaction tank UNICOM, the reaction tank inner top is provided with a biogas gas collection district, adds magnetic bio-carrier in the reaction tank; The top of described main reaction region is provided with the pair of electrodes plate, and the electroplax plate links to each other with reaction tank direct supply outward, and the bottom of main reaction region is provided with a pair of vertical flow deflector; The top of described membrane separation zone is provided with one or more groups membrane module, be provided with the film flushing arrangement under the membrane module, the top is provided with the biogas recycle system outside reaction tank, and the unified end of biogas circulatory system is connected with the biogas gas collection district of reaction tank, and an end is connected with the film flushing arrangement; The bottom of reaction tank is provided with funnel shaped sludge bucket, and the bottom centre of sludge bucket is under the middle part of described flow deflector, and is provided with the waste water system of distribution; The feed-water end of waste water system of distribution and waste pipe UNICOM are connected on the water side of waste water circulation system by pipeline simultaneously, and the feed-water end of waste water circulation system is connected to the main reaction region top of reaction tank by pipeline; Waste water is discharged reaction tank after filtering by described membrane module.
More particularly, described membrane module comprises that the cross section is I-shaped membrane support and the row's hollow-fibre membrane that sticks to respectively the membrane support both sides.
The described biogas recycle system mainly comprises a vacuum cycle pump; Described waste water system of distribution mainly comprises a water distributor; Described waste water circulation system mainly comprises a water circulating pump.
The biogas circulating electromagnetic anaerobic membrane bioreactor that is used for wastewater treatment that combined with electrochemical technological development of the present invention goes out, accelerate on the one hand decomposition and the conversion of the intermediate product of difficult degradation pollutent and the formation of some anaerobic biodegradation by little electric current, fix by electric field and magnetic bio-carrier on the other hand and improve intrasystem microbe population, thus the contaminant removal capacity of consolidation system.The reactor setting of subregion not only is conducive to strengthen the mixed effect of main reaction region, improve the separating effect of membrane separation zone, the biogas that also is conducive to utilize anaerobic process to produce is come the flushing membrane assembly, delays the film pollution course, thus the cleaning interval of membrane component and prolong and work-ing life.Therefore, the present invention has reached the ability of coming reinforced anaerobic Membrane Bioreactor for Wastewater Treatment Persistent organic pollutants by electrochemistry and magnetic microbial carrier, utilize simultaneously fixedly anaerobion of electricity, magnetic technology, make them form magnetic anaerobion membrane granule, and the biogas of recycle anaerobic process generation is together come the effect of decelerating membrane pollution.The present invention is applicable to the processing of trade effluent.
At present, the research of membrane Bio-reactor Technology mainly concentrates on mechanism and the prevention that the research film pollutes, slow down the new technology of polluting with controlling diaphragm, the research and development of novel film materials and further improve the aspects such as level of automation, and utilize biogas circulation flushing membrane module, and the AMBR treatment system that combines with electrochemistry and magnetic technology there is not yet report.Generally speaking, the present invention compares with existing AMBR technology, has following advantage and effect:
(1) electrolytic action, magnetic technology are combined with AMBR, proposed first the integrated wastewater treatment equipment of electromagnetism anaerobion.
(2) utilize the dual function in electric current and magnetic field, both can form the contaminant removal capacity that fixing anaerobe membrane granule comes the intensive treatment system to the hormesis of anaerobion and by magnetic bio-carrier by little electric current, cohesion and separability to anaerobe film and biological particles have been strengthened again, make as much as possible being retained in the reaction zone of they energy, can effectively alleviate the pollution on film surface.
(3) utilize biogas circulation flushing membrane module, in the process of anaerobic treatment of waste water, effectively slow down film surface contamination process, effectively prolong membrane washing cycle and work-ing life.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Fig. 2 is the Facad structure schematic diagram of the membrane module in the embodiment of the invention.
Fig. 3 is the side structure schematic diagram of the membrane module in the embodiment of the invention.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Referring to Fig. 1, the present embodiment comprises reaction tank 1, as seen from the figure, the top of reaction tank 1 is separated into main reaction region 13 and membrane separation zone 14, main reaction region 13 and membrane separation zone 14 are in the bottom of reaction tank 1 UNICOM, reaction tank 1 inner top is provided with a biogas gas collection district 15, reaction tank 1 interior adding magnetic bio-carrier 4.The anaerobion of magnetic bio-carrier in can 4 fixed systems, form the microbial film particle, these anaerobions are more easily separated with waste water and be retained in for a long time in the reactor, thereby improved intrasystem concentration of anaerobic microorganisms, effectively strengthened the contaminant removal capacity of system.The top of main reaction region 13 is provided with pair of electrodes plate 2, and electroplax plate 2 links to each other with reaction tank direct supply 3 outward.Direct supply 3 provides the electric current of strength of current＜10mA, and little electric current can not only stimulate the growth of microorganism, accelerates the metabolism of microorganism, also helps to assist anaerobion degradation of contaminant and anaerobe reaction to form the intermediate product of some.The bottom of main reaction region 13 is provided with a pair of vertical flow deflector 9.Flow deflector 9 can not only improve the mixed effect of main reaction region, also helps to improve the separating effect of magnetic bio particle and waste water.The top of membrane separation zone 14 is provided with one or more groups membrane module 7, be provided with film flushing arrangement 8 under the membrane module 7, be provided with the biogas recycle system 6 at reaction tank 1 outer top, the biogas recycle system 6 one ends are connected with the biogas gas collection district 15 of reaction tank 1, one end is connected with film flushing arrangement 8, and the biogas recycle system 6 in the present embodiment mainly comprises a vacuum cycle pump.The biogas recycle system 6 is directed into film flushing arrangement 8 with the biogas that anaerobic reaction produces by the vacuum cycle pump, is used for cleaning the film surface contamination.Be also shown in from Fig. 1, the bottom of reaction tank 1 is provided with funnel shaped sludge bucket, and the bottom centre of sludge bucket is under the middle part of flow deflector 9, and is provided with waste water system of distribution 10.The magnetic bio membrane granule of membrane separation zone 14 bottoms precipitations, by gravity and magneticaction, via the sludge bucket automatic back flow to main reaction region 13 bottoms, sustainable participation biochemical reaction.Waste water system of distribution 10 in the present embodiment mainly comprises a water distributor, the feed-water end of waste water system of distribution 10 and waste pipe 16 UNICOMs, be connected on the water side of waste water circulation system 5 by pipeline simultaneously, the feed-water end of waste water circulation system 5 is connected to main reaction region 13 tops of reaction tank 1 by pipeline.Waste water circulation system 5 in the present embodiment mainly comprises a water circulating pump, but magnetic bio-carrier in waste water circulation system 5 enhancing reactors, anaerobion and waste water contact mixing and mass transfer effect, create in refractory organic industrial sewage for anaerobion and more favorably survive and living condition.Waste water is discharged reaction tank 1 after filtering by membrane module 7.The present invention processes by reactor being carried out the by stages, is conducive to keep concentration of anaerobic microorganisms high in the main reaction region and the low microbial biomass of membrane separation zone, when improving whole reactor for treatment ability, can effectively delay the film pollution.
Referring to Fig. 2, Fig. 3, the membrane module 7 in the present embodiment comprises that the cross section is I-shaped membrane support 11 and the row's hollow-fibre membrane 12 that sticks to respectively the membrane support both sides, and hollow-fibre membrane 12 sticks on the membrane support 11 by glue or laser bonding technology.
Working process of the present invention is: waste water enters main reaction region 13 by header tank or intake pump from the feed-water end of the waste water system of distribution 10 of reaction tank 1 bottom, the multiple effect such as the biogas that provides in electric current that battery lead plate 2 and power supply 3 provide, magnetic field that magnetic bio-carrier 4 provides, waste water internal recycle that waste water circulation system 5 provides and the biogas recycle system 6 lower moment mixes with waste water in the reactor, thereby greatly reduce the Pollutant levels into water, for anaerobion provides a metastable flow condition; Magnetic bio-carrier 4 in the reactor is under the effect of electric current, magnetic field and waste water circulation system, in main reaction region 13, be in the state of expansion or even fluidisation, effectively strengthen contacting and mass transfer process of anaerobion and waste water, be conducive to the pollutent in the microbiological deterioration waste water.The waste water that is degraded enters membrane separation zone 14, by going out the effect of water pump and membrane module 7, waste water is separated fully with magnetic bio particle 4, magnetic bio-carrier 4 is under the acting in conjunction of gravity, magnetic force and electric current, reaction is continued to participate in the sludge bucket bottom of automatic back flow to the reaction tank 1.At the top of whole reactor gas collection district 15 is set, is used for collecting the biogas that wastewater treatment process produces.Part biological gas is brought into the bottom of membrane module 7 by the vacuum pump in the biogas recycle system 6, be used for the pollution on continuous wash film surface, the pollutent of washing off deposits to membrane separation zone 14 bottoms under action of gravity, automatic back flow is to the bottom of reaction tank 1 afterwards, the sustainable participation biochemical reaction.
Claims (3)
1. biogas circulating electromagnetic anaerobic membrane bioreactor that is used for wastewater treatment, it is characterized in that: it comprises a reaction tank, the top of reaction tank is separated into main reaction region and membrane separation zone, main reaction region and membrane separation zone are in the bottom of reaction tank UNICOM, the reaction tank inner top is provided with a biogas gas collection district, adds magnetic bio-carrier in the reaction tank; The top of described main reaction region is provided with the pair of electrodes plate, and battery lead plate links to each other with reaction tank direct supply outward, and the bottom of main reaction region is provided with a pair of vertical flow deflector; The top of described membrane separation zone is provided with one or more groups membrane module, be provided with the film flushing arrangement under the membrane module, the top is provided with the biogas recycle system outside reaction tank, and the unified end of biogas circulatory system is connected with the biogas gas collection district of reaction tank, and an end is connected with the film flushing arrangement; The bottom of reaction tank is provided with funnel shaped sludge bucket, and the bottom centre of sludge bucket is under the middle part of described flow deflector, and is provided with the waste water system of distribution; The feed-water end of waste water system of distribution and waste pipe UNICOM are connected on the water side of waste water circulation system by pipeline simultaneously, and the feed-water end of waste water circulation system is connected to the main reaction region top of reaction tank by pipeline; Waste water is discharged reaction tank after filtering by described membrane module.
2. the biogas circulating electromagnetic anaerobic membrane bioreactor for wastewater treatment according to claim 1 is characterized in that: described membrane module comprises that the cross section is I-shaped membrane support and the row's hollow-fibre membrane that sticks to respectively the membrane support both sides.
3. the biogas circulating electromagnetic anaerobic membrane bioreactor for wastewater treatment according to claim 1 and 2, it is characterized in that: the described biogas recycle system mainly comprises a vacuum cycle pump; Described waste water system of distribution mainly comprises a water distributor; Described waste water circulation system mainly comprises a water circulating pump.
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| CN2012100149093A CN102557250B (en) | 2012-01-18 | 2012-01-18 | Biogas circulating electromagnetic anaerobic membrane bio-reactor for wastewater treatment |
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| CN103922468B (en) * | 2014-03-17 | 2015-06-10 | 大连民族学院 | Low-energy consumption aeration-free domestic sewage recycling apparatus |
| CN106010967B (en) * | 2016-06-21 | 2022-03-18 | 浙江工业大学 | Temperature-controlled biofilm culture experimental method and device for eliminating magnetic field influence |
| CN106006960A (en) * | 2016-07-18 | 2016-10-12 | 广德清源水处理设备有限公司 | Anoxic baffled reactor and operation method thereof |
| EP3634917A4 (en) * | 2017-06-05 | 2021-05-12 | Cambrian Innovation, Inc. | Process for a fixed film reactor and apparatus related thereto |
| CN109179631A (en) * | 2018-08-06 | 2019-01-11 | 清华大学 | The anaerobism electrochemical membrane bioreactor of dephosphorization can be synchronized |
| CA3138037C (en) | 2019-06-11 | 2023-08-08 | Metro Vancouver Regional District | Syntrophic enrichment for enhanced digestion process |
| CN115321748B (en) * | 2022-07-19 | 2023-10-24 | 江苏省环境工程技术有限公司 | Jet circulation type membrane bioreactor based on gas lift effect |
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| CN101941759A (en) * | 2010-08-16 | 2011-01-12 | 大连理工大学 | Method for improving pollution resistance and flux of membrane by using weak electric field |
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