CN105858902B - Plant compound bio cathode wetland type biological fuel cell and water purification produce electricity method - Google Patents
Plant compound bio cathode wetland type biological fuel cell and water purification produce electricity method Download PDFInfo
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- CN105858902B CN105858902B CN201610351079.1A CN201610351079A CN105858902B CN 105858902 B CN105858902 B CN 105858902B CN 201610351079 A CN201610351079 A CN 201610351079A CN 105858902 B CN105858902 B CN 105858902B
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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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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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 kind of plant compound bio cathode wetland type biological fuel cells and water purification to produce electricity method, sewage enters haydite supporting layer water distribution by water inlet pipe, constructed biological carbon granulosa up-flow is discharged from top weir overflow, it is connected to water pipe by anode cathode room and flows into wetland type biological-cathode room, by haydite water distribution layer water distribution, construction biological carbon stratum granulosum, bottom haydite supporting layer are flowed through from top to bottom, are discharged by bottom center drainpipe；Simultaneously, in anode chamber hydrolysis acidification depth anaerobic reaction occurs for sewage, organic matter resolves into small molecule by macromolecular, electricity production bacterium generates electronics while decomposing organic matter, electronics is collected by anode activated carbon-fiber felt electrode material, it is transmitted to external circuit by copper conductor, load is flowed through and reaches cathode activity carbon felt electrode material, reduction reaction is participated in cathode activity carbon felt electrode material surface.The present invention has many advantages, such as that simple in structure, ecological management sewage synchronization production capacity, landscape effect are good, is a kind of novel microbiological fuel cell.
Description
Technical field
The invention belongs to environment-protecting clean energy fields, are related to a kind of utilization plant compound bio cathode collaboration anaerobe
Anode treated sewage synchronizes the microbiological fuel cell of the recycling energy and water purification produces electricity method.
Background technology
Microbiological fuel cell is one kind special in fuel cell.It follows bioelectrochemistry principle, utilizes microorganism
It is changed into electric energy by the organic pollutant degradation in sewage, while by the chemical energy in pollutant, in addition to having in theory very
Except high energy conversion efficiency, some characteristics that also other fuel cells do not have：Raw material is extensive, can utilize general combustion
Expect the organic matter in the unavailable a variety of organic matters of battery institute or even sewage；Operating condition is mild, generally room temperature, normal pressure,
Work under conditions of neutrality, this make cell safety, low-carbon, can resource reclaim, maintenance cost it is low.
Known microbiological fuel cell operation principle：Fuel cell is that one kind converting chemical energy to electric energy by microorganism
Device, the mechanism of action be organic matter as fuel in the anode chamber of anaerobism by microbiological oxidation, the electronics of generation is by micro- life
Object captures and passes to galvanic anode, and electronics reaches cathode by external circuit, and to be formed into a loop generation electric current, and proton passes through
Internal diffusion mass transfer reaches cathode by proton exchange membrane, with electron acceptor（Oxygen）Reaction generates water.Its anode and cathode is anti-
Answer formula as follows：
Anode reaction：（CH2O)n+nH2O =nCO2+ 4ne-+ 4nH+
Cathode reaction： 4e-+ O2+ 4H+ = 2H2O
In well known microbiological fuel cell, cathode generally uses following chemical cathode：（1）Gaseous cathode utilizes sky
Oxygen in gas completes cathodic reduction reaction as electron acceptor；（2）Liquid-type cathode is aerated in cathode and increases dissolved oxygen
Concentration, dissolved oxygen is as electron acceptor, or chemical electron receptor is added such as nitrate nitrogen, and this kind of chemical cathode is to improve
The catalysis reduction efficiency of electrode needs to be added noble metal pt etc. as electrode material, and the high price of noble metal inhibits microorganism
The scale application of fuel cell and popularization.
In order to which the proton exchange fouling membrane and cross-film resistance that solve the problems, such as known Microbial fuel list pond are big, there is in the recent period
Person proposes single pond plant sink wetland type biological fuel cell.The fuel cell indoor is set using anode and cathode same
Meter, eliminates proton exchange membrane, and Root of Wetland Plants is located at anode region in this design, forms plant sink wetland type fuel electricity
Pond.The types of fuel cells participates in anodic oxidation using the rhizosphere microorganism of wetland plant, while utilizing the rhizosphere enzyme of root system secretion
Promote anode-catalyzed oxidation reaction.In order to promote proton mass transfer, using the fortune of the single fluidised form of up-flow of bottom water inlet, top water outlet
Row pattern, eliminates proton exchange membrane, and flow mode also effectively inhibits the dissolved oxygen in headspace to expand to the anode of lower part
It dissipates.But capacity efficiency is low, fluctuation of service.
Currently, known no membranous type wetland fuel cell the problem is that：
1, the integrated design of cathode, anode causes cathode to form anode and interferes, reduces coulombic efficiency.
2, the cathode of battery is chemical cathode or microorganism cathode, and the oxygen of cathode is artificial aeration aerating, high energy consumption.
3, when the root system of plant is located at anaerobic zone, rhizosphere, which secretes oxygen, causes anode to be poisoned, and coordinates without strictly anaerobic region, into
Water COD concentration cannot be too high, otherwise can inhibit the growth of wetland plant, even result in Plant death, since lower COD is dense
Degree, also limits the source of nutrition of electricity production bacterium, and electricity production efficiency is low.
4, without sufficient residual organic substances of degrading（COD）Into cathodic region, the dissolved oxygen of cathode is consumed, electricity production is caused to be imitated
Rate reduces.
Invention content
The problem of for well known microbiological fuel cell and single pond plant sink wetland type biological fuel cell, the present invention
Provide a kind of plant compound bio cathode wetland type biological fuel cell and water purification electricity production method.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of plant compound bio cathode wetland type biological fuel cell is designed without film using dual chamber, includes mainly anode
Room, wetland type biological-cathode room, anode chamber's cathode chamber connection water pipe, external circuit, load and copper conductor, wherein；
The anode chamber is anaerobic reaction room, including water inlet pipe, haydite supporting layer, construction biological carbon granulosa, downflow weir and
Multigroup anode activated carbon-fiber felt electrode material；
Wetland type biological-cathode room includes wetland plant, haydite water distribution layer, construction biological carbon stratum granulosum, bottom haydite
Supporting layer, drainpipe and cathode activity carbon felt electrode material；
By entering haydite supporting layer water distribution positioned at the water inlet pipe of anode chamber's bottom center, formation flows up sewage from bottom to top,
Constructed biological carbon granulosa up-flow is discharged from top weir overflow, and being connected to water pipe by anode cathode room flows into wetland type biology
Cathode chamber, the top overflow in wetland type biological-cathode room, which is discharged, to form drop, by haydite water distribution layer water distribution, from top to bottom,
Construction biological carbon stratum granulosum, bottom haydite supporting layer are flowed through, is discharged by bottom center drainpipe, material stream is completed；
Meanwhile in anode chamber hydrolysis acidification depth anaerobic reaction occurs for sewage, organic matter resolves into small molecule by macromolecular,
Electricity production bacterium generates electronics while decomposing organic matter, and electronics is by multigroup anode activated carbon-fiber felt electrode material of vertical parallel arrangement
Material is collected, and external circuit is transmitted to by copper conductor, is flowed through load and is reached and multigroup vertical parallel is arranged in wetland type biological-cathode room
Interior cathode activity carbon felt electrode material participates in reduction reaction in cathode activity carbon felt electrode material surface.
Using above-mentioned plant compound bio cathode wetland type biological fuel cell water purification produce electricity process be：
The boosted pump of sewage is flowed into from anode chamber's bottom center water inlet pipe, by haydite supporting layer water distribution, is flowed up upwards, stream
Constructed biological carbon granulosa flows into wetland type biological-cathode by top weir overflow through top anode cathode chamber connection water pipe
Room is dropped by overflow, construction biological carbon stratum granulosum is flowed downwardly into wetland haydite water distribution layer, still further below by bottom haydite
Supporting layer is discharged by cathode chamber bottom center drainpipe, completes Water warfare cycle；
Meanwhile the electronics that anaerobism electricity-producing microorganism generates in anode chamber is collected by anode activated carbon-fiber felt electrode material, is passed through
Copper conductor is transmitted to external circuit and flows through load arrival cathode activity carbon felt electrode material, in cathode activity carbon felt electrode material surface
Reduction reaction is participated in, electricity generation process is completed.
Plant compound bio cathode wetland type biological fuel cell provided by the invention and the micro- life of currently known double chamber type
Object fuel cell is different, uses dual chamber design, anode chamber to be connect by pipeline at top with cathode chamber, no proton exchange membrane knot
Structure；Anode chamber is anaerobic reaction filter tank, and cathode chamber is plant compound bio cathode wetland type cathode；Hydraulic flow state：Anode is upper
Up-flow, cathode is sinking.Compared to well known double chamber type microbiological fuel cell, the invention has the advantages that：
1, the present invention has the multi-cultur es layered combination from strict anaerobes to wetland microecosystem, more ecological assemblages
Electricity production pattern is run, the organic sewage of recycling high concentration can be handled, has the characteristics that electricity production efficiency is high.
2, the cathode of the fuel cell is plant compound bio cathode, also using rhizosphere microorganism and rhizosphere enzyme dual catalytic
Original work are used, and are secreted oxygen as electron acceptor using rhizosphere, are realized cathodic reduction reaction.Wetland plant can effectively absorb in sewage
CO2, nitrogen, P as nutrient source, deep purifying sewage while, generates oxygen.
3, efficient conduction type anode filtrate and Wetland Substrate, filtrate and matrix are all made of construction biological carbon, and mesoporous is flourishing, micro-
Hole is fine and close and orderly, and orderly structure is conducive to improve proton（H+）With other cations by the expansion of anode to cathode in matrix
Speed is dissipated, concentration polarization is reduced, reduces internal resistance, improves battery efficiency, flourishing mesoporous is conducive to substrate mass transfer and biomass tune
Control updates biomembrane, keeps microbial activity.
4, it is stringent anaerobic reaction area in the anode chamber of microbiological fuel cell, the fuel cell is enable to utilize COD
Concentration is more than 1000mg/L high concentration organic sewages, has also evaded the COD concentration of common wetland appositional pattern fuel cell water inlet not
Problem that can be too high, makes production capacity increase substantially.
5, the fuel cell can realize the polymorphic flora layering group from depth anaerobism to the wetland Tiny ecosystem ecosystem
The microorganism operational mode of conjunction has many advantages, such as that simple in structure, ecological management sewage synchronization production capacity, landscape effect are good, has it
The technical advantage that allogene fuel cell does not have is a kind of novel microbiological fuel cell.
Description of the drawings
Fig. 1 is plant compound bio cathode wetland type biological fuel cell facade layout drawing；
Fig. 2 is plant compound bio cathode wetland type biological fuel cell A-A sectional views；
In figure, 1：Anode chamber, 2：Wetland type biological-cathode room, 3：Anode chamber's cathode chamber connection water pipe, 4：Water inlet pipe, 5：It overflows
Stream weir, 6：Drainpipe, 7：External circuit, 8：Load, 9：Wetland plant, 10：Copper conductor, 1-1：Anode activated carbon-fiber felt electrode material,
1-2：Haydite supporting layer, 1-3：Construct biological carbon granulosa, 1-5：Sealing cover, 2-1：Haydite water distribution layer, 2-2：Construct biological carbon
Granulosa, 2-3：Bottom haydite supporting layer, 2-4：Cathode activity carbon felt electrode material.
Specific implementation mode
Technical scheme of the present invention is further described below in conjunction with the accompanying drawings, however, it is not limited to this, every to this
Inventive technique scheme is modified or replaced equivalently, and without departing from the spirit of the technical scheme of the invention and range, should all be covered
In protection scope of the present invention.
As shown in Figs. 1-2, plant compound bio cathode wetland type biological fuel cell provided by the invention by anode chamber 1,
Wetland type biological-cathode room 2, anode chamber's cathode chamber connection water pipe 3, external circuit 7, load 8 and copper conductor 10 are constituted, wherein：
The anode chamber 1 is rectangle pond body, including water inlet pipe 4, haydite supporting layer 1-2, construction biological carbon granulosa 1-3, is overflow
Weir 5 and multigroup anode activated carbon-fiber felt electrode material 1-1 are flowed, wherein：Lower center position is provided with water inlet pipe 4, parallel perpendicular in pond
To arrangement 3mm thickness anode activated carbon-fiber felt electrode material 1-1, the facade of the width and pond body of anode activated carbon-fiber felt electrode material 1-1
Size is identical, and height bottom edge is concordant with bottom of pond, and top is the top for constructing biological carbon granulosa 1-3；1 underfill thickness of anode chamber
It is that thickness is not less than 50cm, grain size 2-3mm above the haydite supporting layer 1-2 of 5cm, grain size 3-5mm, haydite supporting layer 1-2
Biological carbon granulosa 1-3 is constructed, the top of anode chamber 1 is provided with downflow weir 5, when can be according to the water and hydraulic retention of sewage disposal
Between design pond size.Sewage enters haydite supporting layer 1-2 water distributions by water inlet pipe 4, and formation flows up from bottom to top, constructed life
Object carbon granules floor 1-3 up-flows are connected to water pipe 3 by anode chamber's cathode chamber from 5 overflow of top weir and flow into wetland type biological-cathode room
2.The top of anode chamber 1 is provided with sealing cover 1-5, and guarantee anode chamber 1 is anaerobic reaction room.Organic matter is detested in anode chamber 1
Oxygen bacterium is catalytically decomposed, and anaerobic bacteria is grown in construction biological carbon granulosa 1-3 and anode activated carbon-fiber felt electrode material in the form of biomembrane
Expect that 1-1 electrode surfaces, anaerobic bacteria decompose organic matter and generate electronics, electronics is collected by anode activated carbon-fiber felt electrode material 1-1, passed through
Copper conductor 10 is transmitted to external circuit 7, and the surfaces cathode activity carbon felt electrode material 2-4 are reached by load 8, copper conductor 10.
The 2 contour design parallel with anode chamber 1 of wetland type biological-cathode room, including wetland plant 9, haydite water distribution layer 2-
1, construction biological carbon stratum granulosum 2-2, bottom haydite supporting layer 2-3, drainpipe 6 and cathode activity carbon felt electrode material 2-4,
In：It is that thickness is not less than 50cm, grain below thickness 5cm, the haydite grain size 3-5mm of haydite water distribution layer 2-1, haydite water distribution layer 2-1
Diameter is the construction biological carbon stratum granulosum 2-2 of 2-3mm, and the bottom of construction biological carbon stratum granulosum 2-2 is that thickness is more than 5cm, haydite grain
Drainpipe 6 is arranged in the bottom haydite supporting layer 2-3 of diameter 3-5mm, 2 bottom center of wetland type biological-cathode room.Wetland type biology is cloudy
It is that bottom arrival is dark and damp to have multigroup 3mm thickness cathode activity carbon felt electrode material 2-4 being vertically arranged in parallel, height in pole room 2
2 bottom of ground type biological-cathode room, top reach at the top of haydite water distribution layer 2-1, width and 2 width phase of wetland type biological-cathode room
When cathode activity carbon felt electrode material 2-4 is connected by more copper conductors 10 with external circuit 7 and load 8；9 kinds of plants of wetland plant
In 2 top of wetland type biological-cathode room, the root system of wetland plant 9 is located at construction biological carbon stratum granulosum 2-2 and bottom haydite support
Layer 2-3,9 rhizosphere of wetland plant secretes oxygen, is the important sources of fuel battery negative pole electron acceptor, solves artificial aeration's oxygenation, drop
Low operating cost；Wetland rhizosphere bottom aerobic area, using the micro-content organism of rhizosphere secretion using nitrate nitrogen as electron acceptor, profit
Reduction reaction is carried out with denitrifying bacteria, denitrogenation is realized while completing electricity cycle；Wetland plant 9 is the moon by Radial Oxygen Loss from Root
Pole room provides oxygen, while wetland plant 9 is absorbed nitrogen, phosphorus in water by root system and purified water, Resource recovery.
Wetland type biological-cathode room 2 is connected to water pipe 3 by anode chamber's cathode chamber and is connected at top with anode chamber 1, and water is logical
It crosses anode chamber's cathode chamber connection water pipe 3 and flows into 5 overflow of downflow weir drop inflow wetland type biological-cathode room 2, in wetland type biology
The top overflow of cathode chamber 2 is discharged to form drop, by haydite water distribution layer 2-1 water distributions, from top to bottom, flows through construction biological carbon
Granulosa 2-2, bottom haydite supporting layer 2-3 are discharged by drainpipe 5, complete material stream.
The structure of the fuel cell is designed using double ponds, and anode chamber is separately arranged in parallel with cathode chamber, using no proton
The pipeline of exchange membrane connects；Anode chamber is anaerobic filter structure, and cathode is wetland structure, and plant is located at cathode chamber；It in this way can be with
Effectively improve the organic substrates into water（COD）Concentration improves production capacity.
The anode filtrate of the fuel cell and cathode wet host material be all made of haydite support water distribution, filling construction life
Object charcoal, according to water inlet organic substrates（COD）Concentration, the structure of biological carbon has mesoporous flourishing, and micropore is fine and close and orderly, flourishing
Mesoporous be conducive to dissolved oxygen and substrate mass transfer, improve mass-transfer performance, it is fine and close and orderly micropore advantageously reduces internal resistance, improve
Electric conductivity, while micropore advantageously forms abundant biomembrane, regulates and controls biomass.
The operational mode takes double-current state to run：Anode is that up-flow is run, and cathode runs for sinking, specially：Sun
Pole room bottom center is intake, and by haydite supporting layer water distribution, is flowed through construction biological carbon granulosa and is reached top, be discharged by downflow weir
Flow mode, top water outlet is discharged into the top of wetland type biological-cathode room by anode chamber's cathode chamber connection water pipe, in wetland
Top form small drop, increase air oxyty, intake from top, by haydite water distribution layer water distribution uniformity, to flowing down
Construction biological carbon stratum granulosum, bottom haydite supporting layer are crossed, is drained in bottom center, forms sinking operational mode, fluidised form in pairs
Design, on the one hand inhibits diffusion rate of dissolved oxygen to enter anode chamber, on the other hand reduces interference of the cathode to anode.
The electrode material of the fuel cell uses activated carbon-fiber felt electrode material, passes through copper conductor and activated carbon-fiber felt electrode material
Material connection transmits electronics and reaches external circuit.
The process of the process section is：
One, the water comprising organic matter is flowed into through anode chamber's bottom center water inlet pipe, and haydite is passed through in the form of flowing up upwards
Supporting layer 1-2 water distribution uniformities；Stream is ramped up to enter by construction biological carbon granulosa 1-3 and anode activated carbon-fiber felt electrode material 1-1 structures
At anaerobic reaction area, pass through hydrolysis acidification in area's organic matter, depth anaerobism, the organic of the indissoluble of macromolecular be changed into small point
The organic matter of the solubilised state of son, final major part organic matter degradation, generates NH4+、CO2, water, a small amount of CH4Deng simultaneously generate electricity
Son, electronics are collected by anode activated carbon-fiber felt electrode material 1-1, and external circuit 7 is transmitted to by copper conductor 10, are reached by load 8
Cathode activity carbon felt electrode 2-5；The organic matter that part is not degraded（COD）The aqueous solution of ammonia nitrogen is flowed out by top weir 5,
2 top of wetland type biological-cathode room is flowed by anode cathode room connection water pipe 3.
Two, flow into includes a small amount of organic matter（COD）Water with ammonia nitrogen increases in the 2 top drop of wetland type biological-cathode room
The concentration of dissolved oxygen is flowed downwardly by haydite water distribution layer 2-1 water distribution uniformities by construction biological carbon stratum granulosum 2-2 and wetland plant
It is given birth to using construction using 9 Radial Oxygen Loss from Root of wetland plant and dissolved oxygen as electron acceptor the aerobic zone that 9 root system of object is composed
The biomembrane of object carbon particle layer 2-2 is catalyst, completes cathode microbial catalytic reduction reaction.The suction of Wetland Substrate is utilized simultaneously
Attached, absorption, assimilation, the aerobic biochemical effect of wetland plant further lower organic matter, ammonia nitrogen, TP and purify water.
Three, water continues to flow downwardly into aerobic area haydite supporting layer 2-3, the nitrate nitrogen in this water as electron acceptor,
Denitrifying bacteria completes denitrification denitrogenation using the COD of a small amount of rhizosphere secretion and reacts, and water quality is fully purified, by bottom
Drainpipe 6 is entreated to be discharged, electricity production water purification process is completed.
Specific electrode reaction is as follows：
One, anode key reaction：
C6H12O6 + 6H2O –24e-（Microorganism, electricity production bacterium collaboration）→ 6CO2 + 24H+
Two, cathode key reaction：
6O2+ 24 e- +24H+→ 12H2O（Oxygen comes from root system of plant and secretes oxygen）
2NH4 ++ 3O2（Nitrobacteria）→2 NO3 - + 8H+
2NO3 - + 12e- + 12H+ → N2 + 6H2O
Three, overall reaction：
C6H12O6+ 7O2+NH4 → 6CO2 + 8H2O+1/2N2
Above-mentioned plant compound bio cathode wetland type biological fuel cell provided by the invention is combined with more ecosystems
Electricity production pattern is run, the organic sewage of higher concentration can be handled, have the characteristics that higher electricity production efficiency, outstanding others wetland
Type biological-cathode structure, forms the complicated ecosystem that plant, Wetland Substrate, substrate microorganism are constituted, and existing rhizosphere is micro-
Biology also has rhizosphere enzyme as the reduction reaction of catalyst as the bioreduction of catalyst, greatly improves going back for cathode
Former efficiency；This cathode construction can utilize rhizosphere to secrete the concentration that oxygen improves the oxygen of cathode electronics receptor simultaneously, in rhizosphere bottom
Aerobic area using nitrate nitrogen as electron acceptor, complete denitrification reduction reaction and improve urging for cathode while denitrogenation
Change reduction efficiency, cathode does not need artificial aeration's oxygenation, this is not available for other well known microbiological fuel cells.
Although the fuel cell is designed using double-chamber structure, no isolated ions is taken to hand between anode chamber and cathode chamber
Film is changed, using hydraulic flow state, inhibits influence of the indoor dissolved oxygen of cathode to anaerobism electricity production reaction in anode chamber.Reduce battery
Internal resistance improves effective output voltage.
The fuel battery energy realizes that sewage from depth anaerobism to the aerobic multi-level purification process of wetland Tiny ecosystem, has filter
The pattern of the microorganism operation electricity production decontamination of material attachment anaerobe and the combination of Wetland Substrate attached microbial, is known in other
Not available for type microbiological fuel cell.
Claims (9)
1. a kind of plant compound bio cathode wetland type biological fuel cell, it is characterised in that the fuel cell includes anode
Room, wetland type biological-cathode room, anode chamber's cathode chamber connection water pipe, external circuit, load and copper conductor, wherein；
The anode chamber is the anaerobic reaction room that top is provided with sealing cover, including water inlet pipe, haydite supporting layer, construction biological carbon
Granulosa, downflow weir and multigroup anode activated carbon-fiber felt electrode material；
Wetland type biological-cathode room includes wetland plant, haydite water distribution layer, construction biological carbon stratum granulosum, bottom haydite support
Layer, drainpipe and cathode activity carbon felt electrode material；
Sewage positioned at the water inlet pipe of anode chamber's bottom center by entering haydite supporting layer water distribution, and formation flows up from bottom to top, through structure
It makes biological carbon granulosa up-flow to be discharged from top weir overflow, being connected to water pipe by anode cathode room flows into wetland type biological-cathode
Room, the top overflow in wetland type biological-cathode room, which is discharged, to form drop, is flowed through from top to bottom by haydite water distribution layer water distribution
Biological carbon stratum granulosum, bottom haydite supporting layer are constructed, is discharged by bottom center drainpipe, material stream is completed；
Meanwhile in anode chamber hydrolysis acidification depth anaerobic reaction occurs for sewage, organic matter resolves into small molecule by macromolecular, produces electricity
Bacterium generates electronics while decomposing organic matter, and electronics is received by multigroup anode activated carbon-fiber felt electrode material of vertical parallel arrangement
Collection, external circuit is transmitted to by copper conductor, is flowed through load and is reached that multigroup vertical parallel to be arranged in wetland type biological-cathode indoor
Cathode activity carbon felt electrode material participates in reduction reaction in cathode activity carbon felt electrode material surface.
2. plant compound bio cathode wetland type biological fuel cell according to claim 1, it is characterised in that the sun
Pole room is rectangle pond body.
3. plant compound bio cathode wetland type biological fuel cell according to claim 1, it is characterised in that the pottery
Grain supporting layer thickness be 5cm, grain size 3-5mm.
4. plant compound bio cathode wetland type biological fuel cell according to claim 1, it is characterised in that the structure
The thickness for making biological carbon granulosa is not less than 50cm, grain size 2-3mm.
5. plant compound bio cathode wetland type biological fuel cell according to claim 1, it is characterised in that the pottery
The thickness of grain water distribution layer is 5cm, haydite grain size is 3-5mm.
6. plant compound bio cathode wetland type biological fuel cell according to claim 1, it is characterised in that the structure
The thickness for making biological carbon stratum granulosum is not less than 50cm, grain size 2-3mm.
7. plant compound bio cathode wetland type biological fuel cell according to claim 1, it is characterised in that the bottom
The thickness of portion's haydite supporting layer is more than 5cm, haydite grain size is 3-5mm.
8. plant compound bio cathode wetland type biological fuel cell according to claim 1, it is characterised in that described the moon
Pole activated carbon-fiber felt electrode material 3mm is thick, highly reaches cloudy wetland type biological-cathode room bottom for bottom, and top reaches haydite water distribution
Layer top, width are suitable with wetland type biological-cathode room width.
9. a kind of plant compound bio cathode wetland type biological fuel cell using described in claim 1-8 any claims
The method of water purification electricity production, it is characterised in that steps are as follows for the method：
The boosted pump of sewage is flowed into from anode chamber's bottom center water inlet pipe, by haydite supporting layer water distribution, is flowed up upwards, is flowed through structure
Biological carbon granulosa is made, wetland type biological-cathode room, warp are flowed into through top anode cathode chamber connection water pipe by top weir overflow
Overflow drop is crossed, construction biological carbon stratum granulosum is flowed downwardly into wetland haydite water distribution layer, still further below by bottom haydite support
Layer is discharged by cathode chamber bottom center drainpipe, completes Water warfare cycle；
Meanwhile the electronics that anaerobism electricity-producing microorganism generates in anode chamber is collected by anode activated carbon-fiber felt electrode material, is led by copper
Line is transmitted to external circuit and flows through load arrival cathode activity carbon felt electrode material, is participated in cathode activity carbon felt electrode material surface
Reduction reaction, electricity generation process are completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610351079.1A CN105858902B (en) | 2016-05-25 | 2016-05-25 | Plant compound bio cathode wetland type biological fuel cell and water purification produce electricity method |
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| CN107900095B (en) * | 2017-11-27 | 2020-01-14 | 哈尔滨工业大学 | Self-generating current-rising wetland polluted soil remediation device and remediation method |
| CN108178320B (en) * | 2018-01-12 | 2020-06-19 | 南京工业大学 | Microbial fuel cell artificial wetland device and sewage purification method |
| WO2019165373A1 (en) * | 2018-02-23 | 2019-08-29 | University Of Southern California | Plant-sediment microbial fuel cell system for wastewater treatment with self-contained power sustainability |
| CN110117068A (en) * | 2019-04-24 | 2019-08-13 | 上海交通大学 | A kind of sewage treatment unit based on biofilter cathode microbial fuel cell |
| CN113540542B (en) * | 2021-07-27 | 2023-03-24 | 桂林理工大学 | Microbial battery for constructed wetland |
| CN114920354B (en) * | 2022-06-16 | 2023-05-26 | 烟台大学 | Reactor and method for treating organic wastewater by microbial fuel cell stack |
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