CN102723517A - Microbial fuel cell with separation membrane and biological negative pole, and sewage treatment method - Google Patents

Microbial fuel cell with separation membrane and biological negative pole, and sewage treatment method Download PDF

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Publication number
CN102723517A
CN102723517A CN2012102082721A CN201210208272A CN102723517A CN 102723517 A CN102723517 A CN 102723517A CN 2012102082721 A CN2012102082721 A CN 2012102082721A CN 201210208272 A CN201210208272 A CN 201210208272A CN 102723517 A CN102723517 A CN 102723517A
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membrane
biological
cathode
fuel cell
anaerobic
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CN2012102082721A
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CN102723517B (en
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张捍民
张广毅
张嵘
杨凤林
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Dalian University of Technology
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Dalian University of Technology
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37Wastewater or sewage treatment systems using renewable energies using solar energy

Abstract

A microbial fuel cell with a separation membrane and a biological negative pole and a sewage treatment method belong to the technical field of sewage treatment and reclamation. The microbial fuel cell is characterized in that a reaction tank is divided into an anaerobic area and an aerobic area; a positive pole is arranged in the anaerobic area, current-producing bacteria on the surface of the positive pole decompose organic pollutants and transmit electrons to the positive pole; membrane component type negative poles wraps a framework by a stainless steel cloth and are arranged in the aerobic area; the membrane is formed on the stainless steel cloth which is domesticated, aerobic nitrifying bacteria are on the outer layer of the biological membrane, and anaerobic denitrifying bacteria on the inner layer of the biological membrane can obtain directly the electrons transmitted by the positive pole from an electrode to carry out denitrification. The sewage flows through the anaerobic area and the aerobic area in sequence, is filtered by the membrane component type negative poles, then enters a cavity of a membrane component, and pumps to discharge water. The benefits of the invention are as follows: the number of the membrane component type negative poles is adjustable, the area filtered by the biological negative pole and the membrane is flexibly changed, in addition, the decarburization and denitrification can be carried out synchronously on the swage with low consumption and high efficiency, the quality of the discharged water is guaranteed by the membrane which filters the discharged water, and meanwhile, chemical energy is extracted from the pollutants to form electricity which is then output.

Description

Diffusion barrier biological-cathode microbiological fuel cell and sewage water treatment method
Technical field
The invention belongs to field of environment engineering technology, relate to sewage disposal and technology of middle water recycle, the sewage water treatment method of the particularly synchronous carbon and nitrogen removal of applying biological cathode microbial fuel cell electrogenesis, and completion membrane filtration.
Background technology
Along with the continuous growth of global demographic and economic scale, the energy uses the environmental problem of bringing also more serious.Development is the novel energy of characteristic with the low-carbon (LC) energy and progressively substitutes traditional energy, is the important channel that solves fossil energy shortage and problem of environmental pollution.Biomass energy is that solar energy is stored in the form of energy in the biomass with the chemical energy form, is to have the new forms of energy that are widely used and are worth.The microbiological fuel cell technology is waste water to be regarded as the carrier of the energy and resource; Utilize organic pollution as anode fuel; Biomass energy further is converted into the energy-electric energy that cleans most; Realize the unification that waste water treatment and electric energy produce, can support and promote the development of " low-carbon economy " technically.
The Along with people's growth in the living standard; The municipal sewage nitrogen content increases relatively; Demonstrate the characteristic of low ratio of carbon to ammonium, the microbe of microbiological fuel cell biological-cathode load can be directly with electrode as the electron donor electron gain, with nitrate or nitrite as final electron acceptor; Carry out denitrification, can improve the nitric efficiency of low ratio of carbon to ammonium waste water.
Compare with abiotic negative electrode; Biological-cathode has reduced the operation and the construction cost of microbiological fuel cell; Microbe itself is participated in electron transport as catalyst or amboceptor; Replaced precious metal catalyst and expendable electron mediator, thereby solved catalyst poisoning and the additional problem of oxidant, made microbiological fuel cell be able to low cost and continue to carry out.Clauwaert etc. have studied the reduction of biological-cathode for nitrate first, find that biological-cathode can be used as the complete denitrification that electron donor is realized nitrate, improves the operability of microbiological fuel cell.Virdis etc. have studied biological-cathode microbiological fuel cell denitrogenation simultaneously de-carbon, at negative electrode, through adding nitrator or online aeration realization synchronous nitration and denitrification, realize the removal of nitrogen pollutant.
China faces shortage of water resources and the with serious pollution dual-pressure of water; Middle water reuse is one of effective means that addresses this problem; The membrane bioreactor floor space is little; Effluent quality is good, be that degraded of collection activated sludge and membrane filtration are the high-efficiency sewage resource technology of one, but film pollutes and higher film cost limits its application and development.Be the basis with low-cost backing material, form the Dynamic Membrane notion of biomembrane above that, can reduce the membrane module cost largely in order to filter.Microbiological fuel cell and membrane bioreactor organically combine and are used for the low carbon-nitrogen ratio sewage processing, can under the prerequisite that ensures effluent quality, further reduce the operating cost of water technology.
Summary of the invention
The object of the invention provides a kind of microbiological fuel cell electric energy output; Accomplish the sewage recycling method of removal of carbon polluted by nitrogen and membrane filtration simultaneously; With the diffusion barrier biological-cathode microbiological fuel cell of this method design-and-build, not only can obtain higher electric energy output, and can be in the biological-cathode nitration denitrification; Accomplish the membrane filtration water outlet, help promoting energy-saving and cost-reducing, the realization sustainable development of water pollution control technology.
For the foregoing invention purpose, the scheme of the solution that the present invention adopts is:
A kind of diffusion barrier biological-cathode microbiological fuel cell is divided into anaerobic zone and aerobic zone, and anode places anaerobic zone, and the membrane module form negative electrode places aerobic zone, and aerobic zone membrane module below is provided with aeration head; Anaerobic zone and aerobic zone are separated with dividing plate, and dividing plate is controlled the anaerobic zone liquid level simultaneously.The membrane module form negative electrode is with the conductive metal mesh wrapped frame, wire netting surface attachment biomembrane.Be connected with external cord on the wire netting.Membrane module form negative electrode number is adjustable, changes biological-cathode and membrane filtration area.
Use the sewage water treatment method of diffusion barrier biological-cathode microbiological fuel cell, comprise the steps:
(1) reactor is inoculated with activated sludge, anode domestication electrogenesis bacterium, and degradation of contaminant also produces electronics; Cathode surface domestication biomembrane, skin is the aerobic nitrification bacterium, and it is nitrated to accomplish ammonia nitrogen, and internal layer is the anaerobic denitrifying bacterium, from electrode, directly obtains to carry out denitrification by the electronics that the anode transmission comes; , monitor as the domestication maturity index with the electrogenesis amount with voltmeter.
(2) the sewage sequential flow is through anaerobic zone and aerobic zone; The anaerobic zone anode surface adheres to the electrogenesis bacterium, as anode fuel, carries out preliminary utilization degraded at anode region with the organic substance in the waste water or inorganic matter; Comprise biomass energy in the extraction waste water, produce proton and electronics simultaneously.Electronics arrives negative electrode through external circuit and load transfer, moves to negative electrode at cations such as inside battery protons, participates in reaction.Anaerobic zone electrogenesis residual organic matter and ammonia nitrogen get into aerobic zone; Removal and ammonia nitrogen at aerobic zone and negative electrode biofilm surface completion organic carbon are nitrated, accomplish denitrification denitrogenation at cathode surface biomembrane internal layer, after the membrane module form negative electrode filters; Get into the membrane module cavity; The suction water outlet is accomplished synchronous decarburization and is denitrogenated and filter, and extracts the output of chemical energy formation electric energy.
Effect of the present invention and benefit are
(1) the present invention is provided with the negative electrode of several membrane module forms, has increased the cathode area and the membrane filtration area of microbiological fuel cell, and has been easy to repair and replacement and adjustment; Waste water can be realized nitrated in the cathodic region and the negative electrode autotrophic denitrification, realizes the removal of nitrogen pollutant; With the wire netting is the dynamic membrane filtering water outlet of skeleton, has ensured effluent quality, has reduced the film production cost simultaneously; From pollutant, extract chemical energy and form electric energy output, further reduced operating cost.
(2) diffusion barrier biological-cathode microbiological fuel cell floor space is little; Easy to operate, be suitable for the design of modularization and integrated reactor, in sewage disposal and middle water reuse field, be with a wide range of applications; As: the area of no sewerage pipeline network, like holiday resort, travelling scenery district; Area or place that middle water reuse demand is arranged are like hotel, car wash trade; The renewal upgrading of existing municipal sewage plant etc.
Description of drawings
Accompanying drawing is a diffusion barrier biological-cathode microbiological fuel cell sketch map.
Among the figure: 1 water inlet; 2 anodes; 3 anaerobic zones; 4 membrane module delivery ports; 5 membrane modules; 6 aeration heads; 7 external cord; 8 frameworks; 9 wire nettings; 10 aerobic zones.
Embodiment
Be described in detail embodiment of the present invention below in conjunction with technical scheme and accompanying drawing.
Embodiment
Handle the sanitary sewage water yield and press 600m 3/ d meter, COD concentration is 200mg/L, TN concentration is 50mg/L.Separation of design film biological-cathode microbiological fuel cell anaerobic zone 3HRT is 4h, and aerobic zone 10HRT is 4h.The total dischargeable capacity 200m of reactor 3, anaerobic zone 3 is 5m * 10m, high 4m, superelevation 0.5m with aerobic zone 10 sizes.Design cathodic coating assembly 5 filtration fluxs are 100L/hm 2, needing 10 of film 3 m * 4 m membrane modules, hollows in the membrane module 5 are made up of wire netting 9 wrapped frame 8, and wire netting 9 apertures are about 1000 orders, are beneficial to the extension film, guarantee effluent quality.Be connected with external cord 7 on the wire netting.
Reactor is inoculated with activated sludge; Anode 3 surface domestication electrogenesis bacterium, degradation of contaminant also produces electronics; Cathodic coating assembly 5 surface domestication biomembranes, skin is the aerobic nitrification bacterium, and it is nitrated to accomplish ammonia nitrogen, and internal layer is the anaerobic denitrifying bacterium, from electrode, directly obtains to carry out denitrification by the electronics that the anode transmission comes.
The sewage sequential flow is through anaerobic zone 3 and aerobic zone 10, and anaerobic zone 3 electrogenesis residual organic matters and ammonia nitrogen get into aerobic zone 10, and is nitrated at removal and ammonia nitrogen that aerobic zone 10 and cathodic coating assembly 5 biofilm surfaces are accomplished organic carbon; Accomplish denitrification denitrogenation at cathodic coating assembly 5 biomembrane internal layers; After the membrane module form negative electrode filters, get into membrane module 5 cavitys, the suction water outlet; Accomplish synchronous decarburization and denitrogenate and filter, and extract the output of chemical energy formation electric energy.

Claims (3)

1. diffusion barrier biological-cathode microbiological fuel cell; It is characterized in that: this diffusion barrier biological-cathode microbiological fuel cell is divided into anaerobic zone (3) and aerobic zone (10); Anode places anaerobic zone; Membrane module (5) form negative electrode places aerobic zone, and membrane module (5) below of aerobic zone (10) is provided with aeration head (6); Anaerobic zone (3) and aerobic zone (10) are separated with dividing plate, and dividing plate is controlled the anaerobic zone liquid level simultaneously; Membrane module (5) form negative electrode is with wire netting wrapped frame (8), cathode surface attached biological film; Be connected with external cord on the wire netting.
2. a kind of diffusion barrier biological-cathode microbiological fuel cell according to claim 1 is characterized in that membrane module form negative electrode number is adjustable, changes biological-cathode and filter membrane area.
3. application rights requires the sewage water treatment method of 1 or 2 said diffusion barrier biological-cathode microbiological fuel cells, and its characteristic comprises the steps:
(1) reactor is inoculated with activated sludge; Anode domestication electrogenesis bacterium, degradation of contaminant also produces electronics; Cathode surface domestication biomembrane, skin is the aerobic nitrification bacterium, and it is nitrated to accomplish ammonia nitrogen, and internal layer is the anaerobic denitrifying bacterium, from electrode, directly obtains to carry out denitrification by the electronics that the anode transmission comes; , monitor as the domestication maturity index with the electrogenesis amount with voltmeter.
(2) the sewage sequential flow is through anaerobic zone and aerobic zone, and anaerobic zone electrogenesis residual organic matter and ammonia nitrogen get into aerobic zone, and is nitrated at the removal and the ammonia nitrogen of aerobic zone and negative electrode biofilm surface completion organic carbon; Accomplish denitrification denitrogenation at cathode surface biomembrane internal layer; After the membrane module form negative electrode filters, get into the membrane module cavity, the suction water outlet; Accomplish synchronous decarburization and denitrogenate and filter, and extract the output of chemical energy formation electric energy.
CN201210208272.1A 2012-06-21 2012-06-21 Microbial fuel cell with separation membrane and biological negative pole, and sewage treatment method Expired - Fee Related CN102723517B (en)

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CN103043872A (en) * 2013-01-23 2013-04-17 哈尔滨工业大学 Sewage treatment device combining microbial fuel cell and dynamic membrane
CN103435159A (en) * 2013-08-13 2013-12-11 大连理工大学 Organic membrane bioreactor integrating wastewater treatment and electric energy output
CN103739161A (en) * 2013-12-26 2014-04-23 江南大学 Low-energy-consumption degradation-resistant organic wastewater recycling method
CN104611246A (en) * 2013-11-05 2015-05-13 中国石油化工股份有限公司 Synchronous cultivation method of nitrobacteria and aerobic denitrobacteria
CN104628133A (en) * 2015-02-03 2015-05-20 浙江大学 Overflow type electrochemical biological membrane reactor
CN105140529A (en) * 2015-09-01 2015-12-09 中国科学院重庆绿色智能技术研究院 Difunctional electrode with nitrification and denitrification activity and preparing method and application thereof
CN105236686A (en) * 2015-10-30 2016-01-13 东南大学 Sewage treatment method for purifying refractory organic pollutants
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Publication number Priority date Publication date Assignee Title
CN103043872A (en) * 2013-01-23 2013-04-17 哈尔滨工业大学 Sewage treatment device combining microbial fuel cell and dynamic membrane
CN103435159A (en) * 2013-08-13 2013-12-11 大连理工大学 Organic membrane bioreactor integrating wastewater treatment and electric energy output
CN104611246B (en) * 2013-11-05 2017-12-15 中国石油化工股份有限公司 A kind of synchronous culture nitrifier and the method for aerobic denitrifying bacteria
CN104611246A (en) * 2013-11-05 2015-05-13 中国石油化工股份有限公司 Synchronous cultivation method of nitrobacteria and aerobic denitrobacteria
CN103739161A (en) * 2013-12-26 2014-04-23 江南大学 Low-energy-consumption degradation-resistant organic wastewater recycling method
CN104628133A (en) * 2015-02-03 2015-05-20 浙江大学 Overflow type electrochemical biological membrane reactor
CN105140529A (en) * 2015-09-01 2015-12-09 中国科学院重庆绿色智能技术研究院 Difunctional electrode with nitrification and denitrification activity and preparing method and application thereof
CN105140529B (en) * 2015-09-01 2017-10-27 中国科学院重庆绿色智能技术研究院 Bifunctional electrodes with nitration denitrification activity and preparation method and application
CN105236686A (en) * 2015-10-30 2016-01-13 东南大学 Sewage treatment method for purifying refractory organic pollutants
WO2018203455A1 (en) * 2017-05-01 2018-11-08 パナソニックIpマネジメント株式会社 Liquid treatment system

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