CN104230003A - Microbial electrolysis cell device integrating organic sewage treatment with methane production - Google Patents
Microbial electrolysis cell device integrating organic sewage treatment with methane production Download PDFInfo
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- CN104230003A CN104230003A CN201410126682.0A CN201410126682A CN104230003A CN 104230003 A CN104230003 A CN 104230003A CN 201410126682 A CN201410126682 A CN 201410126682A CN 104230003 A CN104230003 A CN 104230003A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B3/00—Electrolytic production of organic compounds
- C25B3/20—Processes
- C25B3/25—Reduction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The invention discloses a microbial electrolysis cell device integrating organic sewage treatment with methane production. A sewage inlet tube 9 is used for injecting oxygen-removed organic substance sewage into a microbial electrolysis cell as a nutrient source for growth of anode electro-microorganisms which are used for carrying out catabolism on organic substances in the sewage, so that CO2, H<+1> and electrons are produced during sewage treatment. Meanwhile, under assisting of electricity, electrically active methnogenic bacteria attached on the surface of a cathode electrode 4 are used for converting the CO2, H<+1> and electrons produced by the anode electro-microorganisms into methane. The device disclosed by the invention is integrated with sewage treatment, CO2 capturing and methane production, has the characteristics of simple structure, low construction cost, easiness for scale amplification, and the like. Besides, the sewage flows through an anode region and a cathode region in sequence, so that an electrochemically active methnogenic bacteria culture medium is prevented from being added on a cathode, and thus, the cost is lowered. And therefore, the device has good application prospect in energy utilization of organic sewage.
Description
Technical field
The present invention relates to a kind of while process organic sewage methanogenic device, belong to the crossing domain of bioelectrochemistry, environment and bioenergy, be specifically related to a kind of microorganism electrolysis cell device integrating organic sewage process and methane phase.
Background technology
The energy, environment and water resources are the bases that the mankind depend on for existence.In recent years along with fossil oil, particularly the quick growth of oil and natural gas usage quantity, triggers global energy dilemma.In addition, a large amount of CO of in use discharging of fossil oil
2can Greenhouse effect be caused, and cause climate warming.Meanwhile, the exploitation of fossil oil and use cause various ecological damage and environmental pollution.The trend developed along with Global climate change and low-carbon economy is inevitable, and exploitation clean energy, minimizing carbon emission are just becoming the fresh target of various countries of international community, and energy-saving and emission-reduction also one of theme having become development of world economy and environment protection.Meanwhile, people create a large amount of organic sewages in daily life, production process.At present, the sewage disposal technology mainly Aerobic biological process extensively adopted, wherein again based on activated sludge process.But Wastewater Treated by Activated Sludge Process sewage energy consumption is high, meanwhile, activated sludge process also produces a large amount of mud, and also needs very high expense to the process of mud.Organism in sewage is pollutent, simultaneously also energy content, can be removed by the mode of recycling.When energy as potential in sewage is approximately sewage disposal consume 10 times of electric energy.The neutralization of various carbon and reproducible energy technology are the important channels alleviated current global energy and Global warming crisis and reduce environmental pollution.
Microorganism electrolysis cell (Microbial Electrolysis Cell, MEC) be a kind of new technology having merged sewage disposal and produced the energy in recent years developed rapidly, the multi-form energy can be obtained while sewage is carried out a biological disposal upon, as the novel process of sewage disposal, cause extensive concern both domestic and external.MEC technology not only overcomes the shortcoming of conventional waste water biological treatment process, and the energy reclaimed can reduce the cost of sewage disposal.In today that the problems such as the energy, environment and water resources are on the rise, MEC can realize the discharge of decreasing pollution thing and rely on and reuse of wastewater three general objective fossil class A fuel A, reach the doulbe-sides' victory of economy and environment, this is that the recycling treatment of organic sewage provides new approaches.The research utilizing the microorganism electrolysis cell reducing carbon dioxide of biological-cathode to produce methane and acetic acid has been reported (WO2009/155587A2, CN 201210447449.3).The method uses biological-cathode as catalyzer, just can synthesizing methane without the need to hydrogen and organic interpolation.In addition, collect CO2 conversion, the pre-microorganism electrolysis cell device integrally of sewage disposal also has report (CN 201110209150.X).This device utilizes ion-exchange membrane to be separated in the anolyte compartment of microorganism electrolysis cell and cathode compartment, the CO that anolyte compartment produces
2enter cathode compartment by guide pipeline, realize CO at cathode compartment
2to catch and to CH
4transform, thus realize CO
2the theory reducing discharging and effectively utilize.But this apparatus structure is complicated, laid down cost is high, and not easily scale is amplified.
Therefore, be necessary that research and development structure is simple, laid down cost is low, and the collection CO of easily scale amplification
2conversion, sewage disposal are in the microorganism electrolysis cell device of one.
Summary of the invention
One is the object of the present invention is to provide to realize sewage disposal, to catch CO
2while, realize CO
2to CH
4the collection sewage disposal transformed, CO
2reforming Methane is simple in the structure of one, laid down cost is low, and the microorganism electrolysis cell device of easily scale amplification.
For solving the problem, the present invention adopts following technical scheme:
The invention provides a kind of microorganism electrolysis cell device integrating organic sewage process and methane phase, it is characterized in that: described device comprises microorganism electrolysis cell shell, anode electrode and cathode electrode is provided with in microorganism electrolysis cell housing, cathode electrode is connected with hot end respectively by the cold end of titanium silk with external D.C. regulated power supply with anode electrode, the lower end side of microorganism electrolysis cell housing is provided with water inlet pipe, water inlet pipe is connected with water distributor, microorganism electrolysis cell housing bottom is provided with mud discharging pipe and valve, microorganism electrolysis cell housing upper side is provided with water shoot, microorganism electrolysis cell housing tip is provided with gas-collecting pipe.
Described microorganism electrolysis cell device of the present invention also comprise be arranged at water inlet pipe place for control wastewater influent flow and/or break-make water inlet control valve, be arranged at water shoot place for control drain discharge and/or break-make draining control valve, be arranged at gas-collecting pipe place for the gas controlling device of detected gas composition and flow, automatic control device for sewage treatment and the human-machine operation panel for input control order; Gas controlling device and human-machine operation panel are connected to the signal input part of automatic control device for sewage treatment, and water inlet control valve, draining control valve and mud discharging valve are connected to the signal output part of automatic control device for sewage treatment; Described automatic control device for sewage treatment can be existing computer or micro-chip.
Described microorganism electrolysis cell device has continuous tupe and sealing treatment pattern;
Continuous tupe is the default mode of operation of described device, in such a mode, the gaseous constituent that automatic control device for sewage treatment obtains according to gas controlling device and flow information, judge the efficiency of microorganism electrolysis, thus control water inlet control valve, draining control valve keep suitable flow, namely as the CO detected
2during with the flow sum of methane gas higher than first threshold, export that control signal makes water inlet control valve, draining control valve is in high flow conditions, as the CO detected
2during with the flow sum of methane gas lower than Second Threshold, export that control signal makes water inlet control valve, draining control valve is in low flow state.In addition, automatic control device for sewage treatment exports control signal according to the first predetermined time interval and opens mud discharging valve.The advantage of this continuous tupe is to realize efficient sewage disposal with acceptable wastewater treatment efficiency.
Sealing treatment pattern is intended to reach the highest wastewater treatment efficiency, the concrete steps of this pattern are: first a, automatic control device for sewage treatment export control signal makes water inlet control valve open and draining control valve closedown, when the volume of the discharge of sewage close to electrolyzer, automatic control device for sewage treatment exports control signal and closes water inlet control valve, and the moment wherein exporting the control signal that water inlet control valve is opened is the starting point that gas flow calculates; B, enter process loitering phase afterwards, as the CO detected
2during with the flow sum of methane gas lower than the 3rd threshold value, automatic control device for sewage treatment exports control signal and makes that water inlet control valve is in high flow conditions, draining control valve is in low flow state simultaneously; C, after the second predetermined time interval, again export control signal close water inlet control valve and draining control valve.
Perform sealing treatment pattern first to enter from step 1, circulation step 2 and 3 realizes optimized wastewater treatment efficiency afterwards.Preferably described 3rd threshold value is lower than first threshold and Second Threshold.
Described first predetermined time interval is 1 minute to 1 hour, preferably 1 minute, 2 minutes, 5 minutes, 10 minutes, 15 minutes, 30 minutes.
Described second predetermined time interval, depending on the speed of the capacity of electrolyzer and water inlet, draining, can be 10 seconds to 1 hour, preferably 10 seconds, 20 seconds, 30 seconds, 1 minute, 2 minutes, 5 minutes, 10 minutes, 15 minutes, 45 minutes.
Microorganism electrolysis cell housing of the present invention adopts synthetic glass, PVC, glass, Steel Concrete or carbon steel material to make.
Cathode electrode of the present invention is carbon fiber brush, and anode electrode adopts carbon fiber brush, reticulated vitreous carbon or granular graphite, and at the surface attachment electrochemical activity methanogen of cathode electrode
methanobacterium palustre, anode electrode surface attachment electrochemical activity microorganism.
The current potential of cathode electrode of the present invention is-0.5V ~-1.5V, and the VD of described D.C. regulated power supply is-2.0V ~ 2.0V.
Device of the present invention is operate continuously, flows through anode electrode in microorganism electrolysis cell housing and cathode electrode successively after sewage deoxidation gas through water inlet pipe, water distributor, then flows out through water shoot, and the CO produced
2and CH
4to discharge through gas-collecting pipe Deng gas and collect.
Sewage disposal: by sewage water inlet pipe using the nutrition source as anode electrogenesis microorganism growth in the organism sewage injection microorganism electrolysis cell removing oxygen, anode electrogenesis microorganism carries out katabolism to the organism in sewage, realizes sewage disposal.
CO
2catch and conversion: when anode electrogenesis microorganism carries out katabolism to the organism in sewage, produce CO
2, H
+and electronic migration is to negative electrode, the electroactive methanogen of assisting lower cathode electrode surface to adhere at electricity catches CO
2, catalysis CO
2, H
+and electronics is converted into methane.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
See Fig. 1, apparatus of the present invention comprise employing synthetic glass, PVC, the microorganism electrolysis cell housing 1 that the material such as glass or concrete is made, anode electrode 8 and cathode electrode 4 is provided with in microorganism electrolysis cell housing 1, cathode electrode 4 is connected with hot end with the cold end of titanium silk 7 with external D.C. regulated power supply 6 respectively by titanium silk 5 with anode electrode 8, D.C. regulated power supply 6 combines for solar electrical energy generation and accessory power supply, at ordinary times using solar electrical energy generation as D.C. regulated power supply, when the electric energy that solar electrical energy generation produces is not enough to maintain microorganism electrolysis cell operation, open accessory power supply.Described cathode electrode 4 is carbon fiber brush, and anode electrode 8 adopts carbon fiber brush, reticulated vitreous carbon or granular graphite, and in the surface attachment of cathode electrode 4
methanobacterium palustredeng electrochemical activity methanogen, anode electrode 8 surface attachment electrogenesis microorganism, the lower end side of microorganism electrolysis cell shell 1 is provided with water inlet pipe 9, water inlet pipe 9 is connected with water distributor 10, microorganism electrolysis cell housing 1 bottom is provided with mud discharging pipe 11 and valve 12, microorganism electrolysis cell housing 1 upper side is provided with water shoot 2, and microorganism electrolysis cell housing 1 top is provided with gas-collecting pipe 3.
Organism in the electrogenesis microbial metabolism sewage of anode electrode 8 surface attachment produces CO
2, H
+and electronics; The CO produced
2, H
+and electronic migration is to negative electrode, assist lower cathode electrode 4 surface attachment at electricity
methanobacterium palustrecO is caught etc. electroactive methanogen
2, catalysis CO
2, H
+and electronics is converted into methane.The present invention has sewage disposal and CO
2the feature that recycling combines.
The collection sewage disposal that the present invention proposes, CO
2catch and methane phase as follows in the start-up course of bioelectrochemical system of one:
(1) biological-cathode makes: by electroactive methanogen
methanobacterium palustrefirst the special culture media ATCC used is specified with ATCC
?anaerobic culturel [H in the 500 mL tape thickness rubber plug serum bottles of Medium 2487
2-CO
2(80:20, v/v)].Before being inoculated into microorganism electrolysis cell, get after the above-mentioned medium centrifugal of 250 mL again by the ATCC of enriched material suspended dispersed to no oxygen, sterilizing
?in Medium 2487 substratum, then by the microorganism electrolysis cell of above-mentioned cell suspension inoculation to anaerobism, and drum fills CO immediately
2, the voltage of D.C. regulated power supply is fixed as-0.9V.Under electricity is auxiliary, the electroactive methanogen adhered to by microorganism electrolysis cell cathode surface
methanobacterium palustrekatalysis by CO
2gas reduction is CH
4.Regularly the current data of microorganism electrolysis cell is sampled, until the electric current of microorganism electrolysis cell maximum and stable after, think electroactive methanogen
methanobacterium palustrefully adhere in cathode electrode surface, completing of biological-cathode;
(2) biological anode makes: with the anaerobic activated sludge of sewage work for inoculum, with the first heavy overflowing liquid of sewage work for substratum, pure nitrogen gas except after oxygen in 1:9(v/v) ratio microbe inoculation electrolyzer enrichment anode electrogenesis microorganism.Microorganism electrolysis cell is batch operation, adds the mixed solution of inoculum and substratum after each experiment terminates according to the above ratio.The voltage of D.C. regulated power supply is fixed as-0.9V, regularly the current data of microorganism electrolysis cell is sampled, until the electric current of microorganism electrolysis cell maximum and stable after, think and fully attached to electrogenesis microorganism at anode electrode surface, now the completing of biological anode pole;
(3) after biological-cathode and biological anode complete, anode electrode in microorganism electrolysis cell and cathode electrode is flowed through successively through water inlet pipe, water distributor by after pending organic sewage removing oxygen, then flow out through microorganism electrolysis cell water shoot, the voltage of D.C. regulated power supply is fixed as-0.9V simultaneously.Organism in the electrogenesis microbial metabolism sewage of anode electrode surface attachment produces CO
2, H
+and electronics, the CO of generation
2, H
+and electronic migration is to negative electrode, assist lower cathode electrode surface to adhere at electricity simultaneously
methanobacterium palustrecO is caught etc. electroactive methanogen
2, catalysis CO
2, H
+and electronics is converted into methane, concrete chemical equation is as follows:
Anode electrode
Cathode electrode
And the CO produced
2and CH
4to discharge through gas-collecting pipe Deng gas and collect.The mud produced in plant running process is discharged by microorganism electrolysis cell lower end sludge-discharge pipe, blocks to prevent microorganism electrolysis cell.
Described microorganism electrolysis cell device also comprise be arranged at water inlet pipe 9 place for control wastewater influent flow and/or break-make water inlet control valve (attached not shown), be arranged at water shoot 2 place for control drain discharge and/or break-make draining control valve, be arranged at gas-collecting pipe place for the gas controlling device of detected gas composition and flow, automatic control device for sewage treatment and the human-machine operation panel for input control order; Gas controlling device and human-machine operation panel are connected to the signal input part of automatic control device for sewage treatment, and water inlet control valve, draining control valve and mud discharging valve are connected to the signal output part of automatic control device for sewage treatment; Described automatic control device for sewage treatment can be existing computer or micro-chip.
Described microorganism electrolysis cell device has continuous tupe and sealing treatment pattern;
Continuous tupe is the default mode of operation of described device, in such a mode, the gaseous constituent that automatic control device for sewage treatment obtains according to gas controlling device and flow information, judge the efficiency of microorganism electrolysis, thus control water inlet control valve, draining control valve keep suitable flow, namely as the CO detected
2during with the flow sum of methane gas higher than first threshold, export that control signal makes water inlet control valve, draining control valve is in high flow conditions, as the CO detected
2during with the flow sum of methane gas lower than Second Threshold, export that control signal makes water inlet control valve, draining control valve is in low flow state.In addition, automatic control device for sewage treatment exports control signal according to the first predetermined time interval and opens mud discharging valve.The advantage of this continuous tupe is to realize efficient sewage disposal with acceptable wastewater treatment efficiency.
Sealing treatment pattern is intended to reach the highest wastewater treatment efficiency, the concrete steps of this pattern are: first a, automatic control device for sewage treatment export control signal makes water inlet control valve open and draining control valve closedown, when the volume of the discharge of sewage close to electrolyzer, automatic control device for sewage treatment exports control signal and closes water inlet control valve, and the moment wherein exporting the control signal that water inlet control valve is opened is the starting point that gas flow calculates; B, enter process loitering phase afterwards, as the CO detected
2during with the flow sum of methane gas lower than the 3rd threshold value, automatic control device for sewage treatment exports control signal and makes that water inlet control valve is in high flow conditions, draining control valve is in low flow state simultaneously; C, after the second predetermined time interval, again export control signal close water inlet control valve and draining control valve.
Perform sealing treatment pattern first to enter from step 1, circulation step 2 and 3 realizes optimized wastewater treatment efficiency afterwards.Preferably described 3rd threshold value is lower than first threshold and Second Threshold.
The sewage disposal of apparatus of the present invention collection, CO
2catch and methane phase in one, have that structure is simple, laid down cost is low, and an easy feature such as scale amplification.In addition, sewage flows through positive column and cathodic area successively, avoids and adds electrochemical activity methanogen substratum at negative electrode, reduce cost.Therefore this device has good application prospect in organic sewage recovery energy.
Last it is noted that obviously, above-described embodiment is only for example of the present invention is clearly described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of amplifying out or variation be still among protection scope of the present invention.
Claims (10)
1. one kind integrates the microorganism electrolysis cell device of organic sewage process and methane phase, it is characterized in that: comprise microorganism electrolysis cell housing 1, anode electrode 8 and cathode electrode 4 is provided with in microorganism electrolysis cell housing 1, cathode electrode 4 is connected with hot end respectively by the cold end of titanium silk with external D.C. regulated power supply 6 with anode electrode 8, the lower end side of microorganism electrolysis cell housing is provided with water inlet pipe 9, water inlet pipe 9 is connected with water distributor 10, microorganism electrolysis cell housing bottom is provided with mud discharging pipe 11 and valve 12, microorganism electrolysis cell housing upper side is provided with water shoot 2, microorganism electrolysis cell housing tip is provided with gas-collecting pipe 3,
Described microorganism electrolysis cell device also comprise be arranged at water inlet pipe place for control wastewater influent flow and/or break-make water inlet control valve, be arranged at water shoot place for control drain discharge and/or break-make draining control valve, be arranged at gas-collecting pipe place for the gas controlling device of detected gas composition and flow, automatic control device for sewage treatment and the human-machine operation panel for input control order; Gas controlling device and human-machine operation panel are connected to the signal input part of automatic control device for sewage treatment, and water inlet control valve, draining control valve and mud discharging valve are connected to the signal output part of automatic control device for sewage treatment; Described automatic control device for sewage treatment is existing computer or micro-chip.
2. a kind of microorganism electrolysis cell device integrating organic sewage process and methane phase as claimed in claim 1, it is characterized in that: D.C. regulated power supply is that solar electrical energy generation and accessory power supply combine, at ordinary times using solar electrical energy generation as D.C. regulated power supply, when the electric energy that solar electrical energy generation produces is not enough to maintain microorganism electrolysis cell operation, open accessory power supply.
3. a kind of microorganism electrolysis cell device integrating organic sewage process and methane phase as claimed in claim 1, is characterized in that: microorganism electrolysis cell housing 1 adopts Steel Concrete or carbon steel material to make.
4. a kind of microorganism electrolysis cell device integrating organic sewage process and methane phase as claimed in claim 1, it is characterized in that: described cathode electrode 4 is carbon fiber brush, anode electrode 8 adopts carbon fiber brush, reticulated vitreous carbon or granular graphite, and at the surface attachment electrochemical activity methanogen of cathode electrode 4, anode electrode 8 surface attachment electrogenesis microorganism.
5. a kind of microorganism electrolysis cell device integrating organic sewage process and methane phase as claimed in claim 1, it is characterized in that: the current potential of cathode electrode is-0.5V ~-1.5V, the VD of described D.C. regulated power supply 6 is-2.0V ~ 2.0V.
6. a kind of microorganism electrolysis cell device integrating organic sewage process and methane phase as claimed in claim 1, it is characterized in that: described device is operate continuously, anode electrode 8 in microorganism electrolysis cell housing 1 and cathode electrode 4 is flowed through successively through water inlet pipe 9, water distributor 10 after sewage deoxidation gas, then flow out through water shoot 2, and the CO produced
2and CH
4gas is discharged through gas-collecting pipe 3 and is collected.
7. a kind of microorganism electrolysis cell device integrating organic sewage process and methane phase as claimed in claim 4, is characterized in that: the electrochemical activity methanogen of cathode electrode 4 surface attachment is
Methanobacterium palustre.
8. a kind of microorganism electrolysis cell device integrating organic sewage process and methane phase according to any one of claim 1-7, is characterized in that: biological-cathode making method is: by electroactive methanogen
methanobacterium palustrefirst Anaerobic culturel in 500 mL tape thickness rubber plug serum bottles; Before being inoculated into microorganism electrolysis cell, to get after 250mL medium centrifugal again by enriched material suspended dispersed in the substratum of no oxygen, sterilizing; Then by the microorganism electrolysis cell of cell suspension inoculation to anaerobism, and drum fills CO immediately
2; The voltage of D.C. regulated power supply is fixed as-0.9V; Under electricity is auxiliary, the electroactive methanogen adhered to by microorganism electrolysis cell cathode surface
methanobacterium palustrekatalysis by CO
2gas reduction is CH
4; Regularly the current data of microorganism electrolysis cell is sampled, until the electric current of microorganism electrolysis cell maximum and stable after, think electroactive methanogen
methanobacterium palustrefully adhere in cathode electrode surface, completing of biological-cathode.
9. a kind of microorganism electrolysis cell device integrating organic sewage process and methane phase according to any one of claim 1-8, it is characterized in that: biological anode fabrication method is: with the anaerobic activated sludge of sewage work for inoculum, with the first heavy overflowing liquid of sewage work for substratum, pure nitrogen gas is except the ratio microbe inoculation electrolyzer enrichment anode electrogenesis microorganism in volumetric ratio 1:9 after oxygen; Microorganism electrolysis cell is batch operation, adds the mixed solution of inoculum and substratum after each experiment terminates according to the above ratio; The voltage of D.C. regulated power supply is fixed as-0.9V, regularly the current data of microorganism electrolysis cell is sampled, until the electric current of microorganism electrolysis cell maximum and stable after, think and fully attached to electrogenesis microorganism at anode electrode surface, now the completing of biological anode pole.
10. a kind of microorganism electrolysis cell device integrating organic sewage process and methane phase as claimed in claim 1, is characterized in that:
Described microorganism electrolysis cell device has continuous tupe and sealing treatment pattern; Continuous tupe is the default mode of operation of described device, in such a mode, the gaseous constituent that automatic control device for sewage treatment obtains according to gas controlling device and flow information, judge the efficiency of microorganism electrolysis cell, thus control water inlet control valve, draining control valve keep suitable flow, namely as the CO detected
2during with the flow sum of methane gas higher than first threshold, export that control signal makes water inlet control valve, draining control valve is in high flow conditions, as the CO detected
2during with the flow sum of methane gas lower than Second Threshold, export that control signal makes water inlet control valve, draining control valve is in low flow state;
The concrete steps of sealing treatment pattern are: first a, automatic control device for sewage treatment export control signal makes water inlet control valve open and draining control valve closedown, when the volume of the discharge of sewage close to electrolyzer, automatic control device for sewage treatment exports control signal and closes water inlet control valve, and the moment wherein exporting the control signal that water inlet control valve is opened is the starting point that gas flow calculates; B, enter process loitering phase, as the CO detected
2during with the flow sum of methane gas lower than the 3rd threshold value, automatic control device for sewage treatment exports control signal and makes that water inlet control valve is in high flow conditions, draining control valve is in low flow state simultaneously; Again export control signal after c, after a predetermined time interval and close water inlet control valve and draining control valve.
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Cited By (7)
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| CN104651875A (en) * | 2015-02-27 | 2015-05-27 | 内蒙古科技大学 | Method for producing methane when converting ethanol into acetic acid |
| CN104743663A (en) * | 2015-03-20 | 2015-07-01 | 浙江工商大学 | Bioelectrochemical reaction device and bioelectrochemical reaction method for producing methane on basis of reinforcement of high-organic-matter and high-ammonia-nitrogen wastewater |
| CN105776502A (en) * | 2016-01-06 | 2016-07-20 | 浙江工商大学 | Method for reducing CO2 by virtue of metal oxide modified biofilm electrode |
| CN113651415A (en) * | 2021-08-26 | 2021-11-16 | 同济大学 | MEC reaction system for strengthening anaerobic digestion |
| CN113736648A (en) * | 2021-08-26 | 2021-12-03 | 同济大学 | MEC reactor for strengthening anaerobic digestion capability of organic solid waste |
| CN114163085A (en) * | 2021-12-20 | 2022-03-11 | 大连理工大学 | Anaerobic bioreactor for enhancing methane production by electrochemical system |
| CN114196534A (en) * | 2021-12-10 | 2022-03-18 | 哈尔滨工业大学 | Carbon-based emission reduction of CO2Device and method for biologically synthesizing methane |
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