CN103708622B - Microbial fuel cell constructed wetland for efficiently treating organic sewage - Google Patents
Microbial fuel cell constructed wetland for efficiently treating organic sewage Download PDFInfo
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- CN103708622B CN103708622B CN201410001954.4A CN201410001954A CN103708622B CN 103708622 B CN103708622 B CN 103708622B CN 201410001954 A CN201410001954 A CN 201410001954A CN 103708622 B CN103708622 B CN 103708622B
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- fuel cell
- lower floor
- artificial swamp
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- upper strata
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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
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention provides a microbial fuel cell constructed wetland for efficiently treating organic sewage, belonging to the technical field of sewage treatment and electrochemical coupling. The microbial fuel cell constructed wetland is characterized in that emergent aquatic plants are planted in a multi-medium filter bed of the constructed wetland and multiple groups of aerator pipes and exhaust pipes are arranged, an inflowing water distributing region and an outflowing water collecting region are arranged at two sides of the multi-medium filter bed and are respectively connected with a water supplying system, a reflowing system and a draining system, the constructed wetland is divided into an upper layer and a lower layer by bentonite, the upper layer and the lower layer are respectively provided with at least one graphite felt, the lower layer is an anaerobic zone (anode chamber) which generates electrons and protons through oxidizing organic matters by microorganisms, the upper layer is an aerobic zone (cathode chamber) which is supplied with oxygen by plants and the aerator pipes, the electrons are transmitted to a cathode through an external circuit to form a current, and a voltage is generated due to difference of redox potentials of the cathode chamber/anode chamber, so that the microbial fuel cell constructed wetland is formed. The microbial fuel cell constructed wetland is capable of simultaneously removing organic matters and generating electric energy, is good in treatment effect and low in operation and maintenance cost, and is energy-saving and environment-friendly.
Description
Technical field
The present invention relates to a kind of microbiological fuel cell artificial swamp of efficient process organic sewage, belong to Artificial Wetland Techniques field.
Background technology
At present, artificial swamp as a kind of low cost, less energy-consumption water technology and obtain extensive concern and the research of people.Artificial swamp is reached by wetland plant, medium filter bed and microorganism removed the object of water pollutant by physics, chemistry and biological synergy.Secrete oxygen as horizontal drowned flow artificial wet land upper strata by plant root and form aerobic zone, contrary lower floor is then mainly rendered as anaerobic state and forms anaerobic zone, due to the difference of up/down layer redox potential, therefore artificial swamp has the potential quality being built into microbiological fuel cell constructed wetland device by transforming its structure.
Microbiological fuel cell is mainly in anolyte compartment, the active microorganism of electrogenesis is utilized to produce electronics, proton and other product by the organism transformed in water, electronics is passed to cathode compartment by external circuit and forms electric current, and proton is passed to negative electrode by proton exchange membrane and is combined with oxygen and generates water.Microbiological fuel cell produces electric energy by the organism in process oxidizing water, and generates pure water.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of microbiological fuel cell artificial swamp of efficient process organic sewage.
In order to solve the problems of the technologies described above, technical scheme of the present invention there is provided a kind of microbiological fuel cell artificial swamp of efficient process organic sewage, it is characterized in that: in the packing medium filter bed of artificial swamp, plant emergent and be furnished with many group aeration tubes and vapor pipe, be respectively equipped with in medium filter bed both sides and become a mandarin water distribution area and go out adfluxion pool, the water distribution area that becomes a mandarin with go out adfluxion pool and be connected waterworks and water exhaust system respectively, the water distribution area that becomes a mandarin and go out between adfluxion pool to be connected with return-flow system, by bentonite bed, multimedium filter bed is divided into aerobic zone, upper strata and lower floor anaerobic zone, at least one piece of graphite felt is arranged respectively in aerobic zone, upper strata and lower floor anaerobic zone, organic sewage enters lower floor anaerobic zone via waterworks and the water distribution area that becomes a mandarin, lower floor anaerobic zone produces electronics and proton as anolyte compartment by the organism in microbial transformation organic sewage, electronics is delivered to as the graphite felt formation electric current in the aerobic zone, upper strata of cathode compartment via the graphite felt of lower floor anaerobic zone by external circuit, proton then imports aerobic zone, upper strata into through bentonite bed, inlet end for the vapor pipe of discharging the gas that contained gas and anaerobic process produce in water stretches in lower floor anaerobic zone, aerobic zone, upper strata as cathode compartment by emergent group and aeration tube oxygen supply, the water outlet of lower floor anaerobic zone is through going out adfluxion pool, return-flow system and the water distribution area that becomes a mandarin enter aerobic zone, upper strata, certainly the water outlet of adfluxion pool is gone out to water exhaust system by after the organic pollutant degradation in the water inlet from lower floor anaerobic zone under aerobic microbiological effect.
Preferably, described bentonite bed is positioned in the middle part of described artificial swamp and also covers completely.
Preferably, described external circuit comprises the wire described graphite felt be connected, and is connected in series load, at load two ends shunt circuit monitoring means or power output device in the graphite felt in aerobic zone, upper strata with between the graphite felt in lower floor anaerobic zone.
Preferably, the multi-direction even punching of pvc pipe that described aeration tube is 5cm by diameter is made, its about 1/m
2be arranged in aerobic zone, described upper strata.
Preferably, described vapor pipe is that multi-direction even punching, top arrange valve and makes in bottom for the pvc pipe of 5cm by diameter, its about 1/m
2be arranged in described lower floor anaerobic zone.
Preferably, described emergent group is by reed 10-20 strain/m
2or Canna generalis Bailey 3-4 strain/m
2layout forms, and its Root Distribution is in aerobic zone, described upper strata.
Preferably, the water distribution area that becomes a mandarin described in and described go out the adfluxion pool gravel filling that is about 9-15mm by particle diameter form through PVC porous plate is fixing.
Preferably, described medium filter bed is about the gravel filling of 5-8mm by particle diameter and sand forms.
The present invention produces electronics and proton in the lower floor anaerobic zone (anolyte compartment) of artificial swamp by microbial transformation organism for the microorganism that electrogenesis is active by the structure of transformation artificial swamp, upper strata is that aerobic zone (cathode compartment) is by plant and aeration tube oxygen supply, electronics is delivered to negative electrode by external circuit and forms electric current, and the difference due to room, Yin/Yang pole redox potential produces voltage thus forms microbiological fuel cell artificial swamp.
The beneficial effect adopting technique scheme to produce is: the organism transformed in water by artificial swamp lower floor anaerobic zone (anolyte compartment) produces electronics, be passed to aerobic zone, upper strata (cathode compartment) by external circuit and form electric current, because the difference of room, Yin/Yang pole redox potential produces voltage.Microbiological fuel cell artificial swamp produces electric energy while efficient process Organic substance in water pollutent.
Accompanying drawing explanation
Fig. 1 is device schematic diagram of the present invention;
Fig. 2 is vertical view of the present invention;
Fig. 3 is water distributor figure of the present invention;
Fig. 4 is PVC aeration tube figure of the present invention;
Fig. 5 is PVC porous plate figure of the present invention;
Fig. 6 is PVC vapor pipe figure of the present invention.
In figure: 1, distributing well 2, butterfly valve 3, grid 4, working shaft 5, valve 6, wilkinite 7, return line 8, microbiological fuel cell constructed wetland device 9, emergent 10, aeration tube 11, vapor pipe 12, filler 13 upper strata, aerobic zone, upper strata aerobic zone (cathode compartment) 14-1, become a mandarin water distribution area 14-2, go out adfluxion pool 15, outlet sump 16, wire 17, load 18, circuit monitoring device 19, reflux pump 20, anode graphite felt 21, lower floor's anaerobic zone filler 22, lower floor anaerobic zone (anolyte compartment) 23, negative electrode graphite felt 24, PVC porous plate 25-1 and 25-2, water distributor.
Embodiment
For making the present invention become apparent, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
As shown in Fig. 1 and 2, the invention provides a kind of microbiological fuel cell artificial swamp of efficient process organic sewage, comprise artificial swamp 8, in the multimedium filter bed of artificial swamp 8, plant emergent group 9 and be furnished with many group aeration tubes 10 and vapor pipe 11.The bentonite bed 6 that about 2cm is thick is positioned in the middle part of artificial swamp 8 and also covers completely, by bentonite bed 6, multimedium filter bed is divided into aerobic zone, upper strata 13 and lower floor anaerobic zone 22.Bottom lower floor's anaerobic zone filler 21 of lower floor anaerobic zone 22, add the mud with electronics microorganism can be produced, in the middle of lower floor's anaerobic zone filler 21 of aerobic zone, the upper strata filler 12 in aerobic zone, upper strata 13 and lower floor anaerobic zone 22, arrange the negative electrode graphite felt 23 of polylith series connection and the anode graphite felt 20 of polylith series connection respectively.By wire 16, negative electrode graphite felt 23 is connected in series with anode graphite felt 20, meanwhile, between negative electrode graphite felt 23 with anode graphite felt 20, is connected in series load 17, at the two ends shunt circuit monitoring device 18 of load 17.
Emergent group 9 is by reed 10-20 strain/m
2or Canna generalis Bailey 3-4 strain/m
2layout forms, and its Root Distribution is in aerobic zone, upper strata.Composition graphs 4, the multi-direction even punching of pvc pipe that aeration tube 10 is 5cm by diameter is made, its about 1/m
2be arranged in aerobic zone, upper strata.Aerobic zone, upper strata is by emergent group 9 and aeration tube 10 oxygen supply.Composition graphs 6, vapor pipe 11 is that multi-direction even punching, top arrange valve 5 and makes in bottom for the pvc pipe of 5cm by diameter, its about 1/m
2be arranged in lower floor anaerobic zone 22.
The multimedium filter bed of artificial swamp 8 is about the gravel filling of 5-8mm by particle diameter and sand forms, be respectively equipped with in its both sides and become a mandarin water distribution area 14-1 and go out adfluxion pool 14-2, composition graphs 3 and Fig. 5, become a mandarin water distribution area 14-1 with go out adfluxion pool 14-2 is about 9-15mm gravel filling by particle diameter through PVC porous plate 24 is fixing and form.Become a mandarin water distribution area 14-1 with go out adfluxion pool 14-2 and be connected waterworks and water exhaust system respectively, become a mandarin water distribution area 14-1 and go out between the 14-2 of adfluxion pool to be connected with return-flow system.
During use, the organic sewage in the distributing well 1 of waterworks processes the lower floor anaerobic zone 22 being promoted to artificial swamp 8 by working shaft 4 through grid 3, is flow to into the water distribution area 14-1 uniformly distributing that becomes a mandarin to lower floor anaerobic zone 22 by water distributor 25-1.In water inlet process, the valve of vapor pipe 11 must be opened, to discharge the gas that in water, contained gas and anaerobic process produce, close in time entering water and be complete.Organic sewage as in the anaerobic zone, upper strata 22 of anolyte compartment by microbiological oxidation organic sewage organism produce electronics, proton and other product, electronics is passed to negative electrode graphite felt 23 via anode graphite felt 20, wire 16 and load 17 and forms electric current, this process can be carried out the Real-Time Monitoring of circuital current, voltage by circuit monitoring device 18, proton reaches the aerobic zone, upper strata 13 as cathode compartment through bentonite bed 6.After the water outlet of lower floor anaerobic zone 22 goes out adfluxion pool 14-2, enter return line 7 by the reflux pump 19 of return-flow system, water distributor 25-2 becomes a mandarin water distribution area 14-1 uniformly distributing to aerobic zone, upper strata 13.The organic pollutant degradation that may will be contained in the water inlet from lower floor anaerobic zone 22 with the proton from lower floor anaerobic zone 22 by the oxygen provided by emergent 9 and aeration tube 10 in aerobic zone, upper strata 13, and via going out the pond 15 of adfluxion pool 14-2 inflow outlet system.
Claims (8)
1. one kind efficiently processes the microbiological fuel cell artificial swamp of organic sewage, it is characterized in that: comprise artificial swamp (8), in the packing medium filter bed of artificial swamp (8), plant emergent group (9) and be furnished with and organize aeration tube (10) and vapor pipe (11) more, be respectively equipped with the water distribution area that becomes a mandarin (14-1) in packing medium filter bed both sides and go out adfluxion pool (14-2), the water distribution area that becomes a mandarin (14-1) with go out adfluxion pool (14-2) and be connected waterworks and water exhaust system respectively, the water distribution area that becomes a mandarin (14-1) and go out between adfluxion pool (14-2) to be connected with return-flow system, by bentonite bed (6), packing medium filter bed is divided into aerobic zone, upper strata (13) and lower floor anaerobic zone (22), at least one piece of graphite felt is arranged respectively in aerobic zone, upper strata (13) and lower floor anaerobic zone (22), organic sewage enters lower floor anaerobic zone (22) via waterworks and the water distribution area that becomes a mandarin (14-1), lower floor anaerobic zone (22) produces electronics and proton as anolyte compartment by the organism in microbiological oxidation organic sewage, electronics is delivered to as the graphite felt formation electric current in the aerobic zone, upper strata (13) of cathode compartment via the graphite felt of lower floor anaerobic zone (22) by external circuit, proton then imports aerobic zone, upper strata (13) into through bentonite bed (6), inlet end for the vapor pipe (11) of discharging the gas that contained gas and anaerobic process produce in water stretches in lower floor anaerobic zone (22), aerobic zone, upper strata (13) as cathode compartment by emergent group (9) and aeration tube (10) oxygen supply, the water outlet of lower floor anaerobic zone (22) is through going out adfluxion pool (14-2), return-flow system and the water distribution area that becomes a mandarin (14-1) enter aerobic zone, upper strata (13), certainly adfluxion pool (14-2) water outlet is gone out to water exhaust system by after the organic pollutant degradation in the water inlet from lower floor anaerobic zone (22) under aerobic microbiological effect.
2. the microbiological fuel cell artificial swamp of a kind of efficient process organic sewage as claimed in claim 1, is characterized in that: described bentonite bed (6) is positioned at described artificial swamp (8) middle part and covers completely.
3. the microbiological fuel cell artificial swamp of a kind of efficient process organic sewage as claimed in claim 1, it is characterized in that: described external circuit comprises the wire (16) described graphite felt be connected, the graphite felt being positioned at aerobic zone, upper strata (13) be connected in series load (17) between the graphite felt being positioned at lower floor anaerobic zone (22), at load (17) two ends shunt circuit monitoring means (18) or power output device.
4. the microbiological fuel cell artificial swamp of a kind of efficient process organic sewage as claimed in claim 1, is characterized in that: the multi-direction even punching of pvc pipe that described aeration tube (10) is 5cm by diameter is made, its 1/m
2be arranged in aerobic zone, described upper strata (13).
5. the microbiological fuel cell artificial swamp of a kind of efficient process organic sewage as claimed in claim 1, it is characterized in that: described vapor pipe (11) is pvc pipe multi-direction even punching in bottom of 5cm by diameter, top arranges valve (5) and makes, its 1/m
2be arranged in described lower floor anaerobic zone (22).
6. the microbiological fuel cell artificial swamp of a kind of efficient process organic sewage as claimed in claim 1, is characterized in that: described emergent group (9) is by reed 10-20 strain/m
2or Canna generalis Bailey 3-4 strain/m
2layout forms, and its Root Distribution is in aerobic zone, described upper strata (13).
7. the microbiological fuel cell artificial swamp of a kind of efficient process organic sewage as claimed in claim 1, is characterized in that: described in become a mandarin water distribution area (14-1) with described go out adfluxion pool (14-2) form through PVC porous plate (24) is fixing by the gravel filling of particle diameter 9-15mm.
8. the microbiological fuel cell artificial swamp of a kind of efficient process organic sewage as claimed in claim 1, is characterized in that: described packing medium filter bed is made up of the gravel filling of particle diameter 5-8mm and sand.
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|---|---|---|---|
| CN201410001954.4A CN103708622B (en) | 2014-01-02 | 2014-01-02 | Microbial fuel cell constructed wetland for efficiently treating organic sewage |
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| CN201410001954.4A CN103708622B (en) | 2014-01-02 | 2014-01-02 | Microbial fuel cell constructed wetland for efficiently treating organic sewage |
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| CN103708622A CN103708622A (en) | 2014-04-09 |
| CN103708622B true CN103708622B (en) | 2015-02-25 |
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| CN104086058B (en) * | 2014-08-01 | 2015-08-19 | 汪浩 | Aerobic-anaerobic artificial wet land system |
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