CN103715445B - A kind of microbiological fuel cell reactor be transformed into by activated sludge process - Google Patents
A kind of microbiological fuel cell reactor be transformed into by activated sludge process Download PDFInfo
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- CN103715445B CN103715445B CN201310613674.4A CN201310613674A CN103715445B CN 103715445 B CN103715445 B CN 103715445B CN 201310613674 A CN201310613674 A CN 201310613674A CN 103715445 B CN103715445 B CN 103715445B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/16—Biochemical fuel cells, i.e. cells in which microorganisms function as catalysts
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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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
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
A kind of microbiological fuel cell reactor be transformed into by activated sludge process, it is characterized in that the twice entity partition wall forming claustra in activated sludge process reactor transform twice hollow batardeau as, the wall material of hollow batardeau is carbon felt, accompanies corrosion resistant metal material as support and for connecting external circuit in the middle of each carbon felt; From water inlet, the inwall of reactor influent side is the 1st road wall, twice hollow batardeau is followed successively by the 2nd road wall and the 3rd road wall, water outlet side inwall be the 4th road wall, Si Daoqiang adheres to the carbon felt of electrogenesis bacterium, as biological membrane electrode.This remodeling method original position transformation plug-flow type active sludge technique, convenient and easy; Biomembrane catalysis anode and cathode is reacted, and produces electric energy, adds the sustainability of sewage disposal; Eliminate forced aeration, reduce power consumption; Partition wall is converted into electrode, and conveniently can change polarity of electrode.The method is conducive to promoting the saving energy and reduce the cost of water pollution control technology, realizes sustainable development.
Description
Technical field
This method belongs to field of environment engineering technology, relate to sewage disposal and technology of middle water recycle, in particular to a kind of microbiological fuel cell reactor be transformed into by activated sludge process, for transforming existing activated sludge process as biological-cathode microbiological fuel cell, electrogenesis synchronously removes the sewage of carbon nitrogen.
Background technology
China faces shortage of water resources and the serious dual-pressure of water pollutions, and Treated sewage reusing is one of effective means solving this problem.Plug-flow type active sludge method is the main technique of a large amount of Construction and operation under a kind of urgent pressure of water pollutions in early days.Up to now, due to its technical maturity, run simple, be still widely used in various sewage disposal, in control water pollutions, play huge effect.
Biomass energy is solar energy is stored in biomass form of energy with chemical energy form, is have the new forms of energy widely using value.As the oil and natural gas in fossil fuel, the hydrocarbon in the middle of waste water is also a kind of biomass energy, contains energy.Under the development trend of low energy consumption and low-carbon economy, waste water is more and more counted as the source of a kind of energy (organic substance) and resource (recycle-water, N, P) and non-waste.
But, aerobic activated sludge process, need to consume a large amount of energy, wherein about there is the electric energy input of half for the organic substance in aeration removal waste water, a kind of in the mode controlling energy, this part energy organic in waste water is not regarded energy recovery, there is high energy consumption, the drawback that operating cost is high.Reduction energy consumption and carbon footprint are the inexorable trends of sewage treatment plant's development, the potential energy source be present in the middle of waste water is obtained better if more, and reduce the energy (operational mode becomes Anaerobic Treatment from Aerobic Process for Treatment) being used for water treatment and dropping into, so waste water treatment may become a kind of producer of net energy and non-consumer simultaneously.
Microbial fuel electrical apparatus technology (MicrobialFuelCell, MFC) be a kind of Anaerobic Methods in Treating waste water being regarded as the carrier of the energy and resource, utilize organic pollution in waste water as fuel, under anaerobic condition, biomass energy one step is converted into the most clean energy-electric energy by anode electro-chemical activity bacterium, realizes the unification of waste water treatment and electric energy generation.MFC is divided into double chamber type and single chamber type by configuration.Each to electrode material, amberplex, water barrier and catalyst function is integrated in one by the negative electrode of single chamber MFC, have that structure is simple, internal resistance is little and electron acceptor by advantages such as diffusion concentration difference affect, efficiency of fuel cell generation is high.
The cathode microbial of biological-cathode microbiological fuel electrical equipment can directly using electrode as electron donor, catalytic cathode reduction reaction well.And compared with noble metal catalyst, there is cost lower, and avoid catalyst poisoning to lose efficacy, can the advantage of sustainable self.Xia etc. prove that biological-cathode can produce electric energy by the diffusion of passive oxygen, and power output is suitable with Pt electrode.Wang etc. devise a kind of novel single-chamber microbial fuel electrical equipment, and the carbon felt of attached biological film is not only as biological-cathode but also as water outlet filter membrane, and negative electrode biomembrane can carry out nitration denitrification and carry out denitrogenation simultaneously.Virdis etc. have studied biological-cathode microbiological fuel electrical equipment removal of carbon and nitrogen simultaneously, at negative electrode, synchronous nitration and denitrification is realized by additional nitrator or online aeration, realize the removal of nitrogen pollutant, this seminar proposes the biomembranous layering of negative electrode, and removal synchronous nitration and denitrification being realized to nitrogen compound plays conclusive effect.
Summary of the invention
The object of the invention is to provide a kind of microbiological fuel cell reactor be transformed into by activated sludge process, for reclaiming the energy contained in waste water, reducing energy consumption, completing the removal of carbon nitrogen pollutant simultaneously.With the pulling flow type single-chamber microbial fuel electrical equipment that the method designs and transforms, not only can exempt energy consumption needed for activated sludge process aeration, and can reclaim lying in the energy in the middle of waste water with the form of electric energy; The biomembrane of biological-cathode can filter water outlet simultaneously, the oxygen of Passive diffusion also can be utilized to be nitre nitrogen by mineralized nitrogen, utilize electrode finally to realize the removal of ammonia nitrogen as electron donor denitrification.This invention is conducive to promoting the saving energy and reduce the cost of water pollution control technology, realizes sustainable development.
Technical scheme of the present invention is:
A kind of microbiological fuel cell reactor be transformed into by activated sludge process, be mainly used in reactor in plug-flow type active sludge technique, specifically transform the twice entity partition wall forming claustra in reactor as hollow batardeau, the wall material of partition wall is carbon felt, accompanies corrosion resistant metal material as support and for connecting external circuit in the middle of each carbon felt; The material of the inwall of reactor influent side and the inwall of water outlet side is also carbon felt, attached biological film above carbon felt; Reactor is divided into three claustras by twice partition wall.From water inlet, the inwall of reactor influent side is the 1st road wall, twice partition wall is followed successively by the 2nd road wall and the 3rd road wall, water outlet side inwall be the 4th road wall.The carbon felt of the 1st road inner wall attachment electrogenesis bacterium is as anode.The space that 2nd and 3 road walls surround can communicate with outside air, can continuously supplement renewal air; Hollow batardeau upper opening place arranges capping, and during sealing, the carbon felt electrode of the 2nd road wall and the 3rd road wall is as anode; During blow-by, the carbon felt electrode one side contacts waste water of the 2nd road wall and the 3rd road wall, opposite side ingress of air, as the biological-cathode of passive oxygen diffusion MFC.4th road wall is also by carbon felt attached microbial, as biological-cathode.The space that 2nd and 3 road walls surround simultaneously can as water leg, for collecting the water outlet through carbon felt biofilm filtration; 4th road wall is also provided with water leg outward, collects the water outlet through this wall biofilm filtration.Each water leg is provided with water leg delivery port, avoids building up a large amount of water outlet, affects electrode performance.Delivery port peripheral hardware effluent overflow weir water, adopt the mode of overflow water outlet, delivery port is positioned at below overflow weir liquid level, plays water seal effect, avoids air to enter whole reactor.
This remodeling method has two kinds of operational modes, and one is the 1st road wall and the 3rd road wall is anode, and the 2nd road wall and the 4th road wall are negative electrode; One is the 1st road wall and the 2nd road wall is anode, and the 3rd road wall and the 4th road wall are negative electrode.Waste water enters reactor from inlet port, and organic substance is degraded on anode, produces electron transmission on electrode.There is oxygen gradient in negative electrode biomembrane, outer biomembrane can utilize oxygen to be nitrate nitrogen by ammonium oxidation, and nitrate nitrogen can as electron acceptor, and the electronics provided by electrode carries out denitrification denitrogenation.Anode and cathode acting in conjunction, finally realizes the function that organic substance is converted into the denitrogenation of electric energy and autotrophic denitrification.Water outlet is also divided into two kinds of forms, one be by after carbon felt biofilm filtration collect after through the water outlet of water leg delivery port, one is the water outlet of claustra terminal overflow water seal delivery port.
The invention has the beneficial effects as follows that this method is based on plug-flow type active sludge reactor, original position transformation is simple, convenient and easy; Electrogenesis bacterium biomembrane catalysis anode and cathode is reacted, degradation of contaminant, produces electric energy, adds the sustainability of sewage treatment plant; Eliminate forced aeration, reduce power consumption; Partition wall is converted into electrode, and conveniently can change polarity of electrode; The water outlet of material with carbon element electrode film, effluent quality is high.The method is conducive to promoting the saving energy and reduce the cost of water pollution control technology, realizes sustainable development.
Reactor structure of the present invention is simple, and flexible operation is easy to operate, is with a wide range of applications in sewage disposal and Treated sewage reusing field, as: without the area of sewerage pipeline network, as holiday resort, Scenic Spots; There are area or the place of Treated sewage reusing demand, as hotel, car wash trade etc.
Accompanying drawing explanation
Accompanying drawing is pulling flow type single-chamber microbial fuel electrical equipment vertical view.
In figure: 1 water inlet; 2 water leg delivery ports; 3 aeration heads; 4 the 1st road walls; 5 the 2nd road walls; 6 carbon felts and corrosion resistant metal material; 7 effluent overflow weir waters; 8 the 4th road walls; 9 delivery ports; 10 the 3rd road walls; 11 water legs.
Embodiment
The specific embodiment of the present invention is described in detail below in conjunction with technical scheme and accompanying drawing.
Embodiment
Reactor is plug-flow type active sludge technical construction, specifically transform the twice entity partition wall forming claustra in reactor as hollow batardeau, the wall material of partition wall is carbon felt, accompanies corrosion resistant metal material as support and for connecting external circuit in the middle of each carbon felt; The material of the inwall of reactor influent side and the inwall of water outlet side is also carbon felt, attached biological film above carbon felt; Reactor is divided into three claustras by twice partition wall.From water inlet, reactor influent side device inwall is the 1st road wall, twice partition wall is followed successively by the 2nd road wall and the 3rd road wall, water outlet side device inwall are the 4th road wall.The carbon felt of the 1st road inner wall attachment electrogenesis bacterium is as anode.The space that 2nd and 3 road walls surround can communicate with outside air, can continuously supplement renewal air; Hollow batardeau upper opening place arranges capping, and during sealing, the carbon felt electrode of the 2nd road wall and the 3rd road wall is as anode; During blow-by, the carbon felt electrode one side contacts waste water of the 2nd road wall and the 3rd road wall, opposite side ingress of air, as the biological-cathode of passive oxygen diffusion MFC.4th road wall is also by carbon felt attached microbial, as biological-cathode.The space that 2nd and 3 road walls surround simultaneously can as water leg, for collecting the water outlet through carbon felt biofilm filtration; 4th road wall is also provided with water leg outward, collects the water outlet through this wall biofilm filtration.Each water leg is provided with water leg delivery port, avoids building up a large amount of water outlet, affects electrode performance.Delivery port peripheral hardware effluent overflow weir water, adopt the mode of overflow water outlet, delivery port is positioned at below overflow weir liquid level, plays water seal effect, avoids air to enter whole reactor.
The process sanitary sewage water yield presses 1500m
3/ d counts, and COD concentration is 300mg/L, TN concentration is 50mg/L.The pulling flow type Microbial fuel electrical equipment HRT of design is about 12h.Specifically be of a size of: the long 12m of each claustra, wide 4m, available depth 5m, superelevation 1m, height overall 6 meters.2.5m at the bottom of the distance device of delivery port position, outer connection overflow weir, delivery port is lower than the overflow water surface, and water seal keeps reactor anaerobism.Carbon felt attached biological film as electrode, and is connected to external circuit by electric elements (resistance or electric capacity) with wire, lays aeration facility at the bottom of device.
Reactor start-up: the electrogenesis bacterium inoculation (or off-line is tamed, and is installed on wall after electrogenesis is stable) that reactor is ripe.Using municipal wastewater as water inlet, concentrate be stored in accumulator, by intake pump from water inlet 1 with 60m
3the flow water inlet of/h.Organic substance is wherein as electron donor, and under the effect of anode electrogenesis bacterium, explanation produces electronics, proton and carbon dioxide; The carbon felt electrode of ingress of air is negative electrode, using oxygen or the nitre nitrogen that is transformed as electron acceptor.On-line monitoring voltage, pH, oxidation-reduction potential and DO.
Claims (3)
1. the microbiological fuel cell reactor be transformed into by activated sludge process, is characterized in that,
The twice entity partition wall forming claustra in activated sludge process reactor transform twice hollow batardeau as, and the wall material of hollow batardeau is carbon felt, accompanies corrosion resistant metal material as support and for connecting external circuit in the middle of each carbon felt;
From water inlet, the inwall of reactor influent side is the 1st road wall, twice hollow batardeau is followed successively by the 2nd road wall and the 3rd road wall, water outlet side inwall be the 4th road wall, Si Daoqiang adheres to the carbon felt of electrogenesis bacterium, as biological membrane electrode;
Described hollow batardeau upper opening place arranges capping.
2. microbiological fuel cell reactor according to claim 1, is characterized in that, described corrosion resistant metal material is stainless (steel) wire.
3. microbiological fuel cell reactor according to claim 1 and 2, is characterized in that, the space that twice hollow batardeau surrounds is as water leg, and the wall of water outlet side is also provided with water leg outward; Each water leg is provided with water leg delivery port; Delivery port peripheral hardware effluent overflow weir water, adopt the mode of overflow water outlet, delivery port is positioned at below overflow weir liquid level.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310613674.4A CN103715445B (en) | 2013-11-27 | 2013-11-27 | A kind of microbiological fuel cell reactor be transformed into by activated sludge process |
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| CN201310613674.4A CN103715445B (en) | 2013-11-27 | 2013-11-27 | A kind of microbiological fuel cell reactor be transformed into by activated sludge process |
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| CN103715445A CN103715445A (en) | 2014-04-09 |
| CN103715445B true CN103715445B (en) | 2016-01-13 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104466216B (en) * | 2014-12-11 | 2016-08-24 | 哈尔滨工业大学 | A kind of storehouse deflector type microbiological fuel cell and use it to process waste water method of realizing zero power consumption |
| CN108987778A (en) * | 2018-09-17 | 2018-12-11 | 苏州经贸职业技术学院 | Biological fuel cell reactor |
| CN109638327B (en) * | 2018-12-19 | 2021-05-18 | 大连理工大学 | Process for denitrification and power generation by using single-chamber anaerobic ammonia oxidation sludge-microbial fuel cell device |
| CN110606543B (en) * | 2019-10-22 | 2022-09-23 | 东南大学 | System and method for purifying lake sediment and organic pollutants in lake water body |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1937297A (en) * | 2006-10-20 | 2007-03-28 | 清华大学 | Double-drum microbial fuel cell |
| CN101118973A (en) * | 2006-08-01 | 2008-02-06 | 比亚迪股份有限公司 | Microbiological fuel cell device and battery and use and water treatment system |
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| US8277984B2 (en) * | 2006-05-02 | 2012-10-02 | The Penn State Research Foundation | Substrate-enhanced microbial fuel cells |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101118973A (en) * | 2006-08-01 | 2008-02-06 | 比亚迪股份有限公司 | Microbiological fuel cell device and battery and use and water treatment system |
| CN1937297A (en) * | 2006-10-20 | 2007-03-28 | 清华大学 | Double-drum microbial fuel cell |
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