CN214457095U - Single-chamber air cathode microbial fuel cell pilot plant - Google Patents
Single-chamber air cathode microbial fuel cell pilot plant Download PDFInfo
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- CN214457095U CN214457095U CN202022334104.XU CN202022334104U CN214457095U CN 214457095 U CN214457095 U CN 214457095U CN 202022334104 U CN202022334104 U CN 202022334104U CN 214457095 U CN214457095 U CN 214457095U
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- chamber
- cathode
- fuel cell
- oxygen
- anode
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- 239000000446 fuel Substances 0.000 title claims abstract description 26
- 230000000813 microbial effect Effects 0.000 title claims abstract description 23
- 239000010865 sewage Substances 0.000 claims abstract description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 25
- 239000001301 oxygen Substances 0.000 claims abstract description 25
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 9
- 238000011020 pilot scale process Methods 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 claims abstract description 4
- 230000002906 microbiologic effect Effects 0.000 claims abstract 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 238000006722 reduction reaction Methods 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims 1
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 244000005700 microbiome Species 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 239000002957 persistent organic pollutant Substances 0.000 abstract 1
- -1 potassium ferricyanide Chemical compound 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 238000011946 reduction process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000004099 anaerobic respiration Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Classifications
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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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- Inert Electrodes (AREA)
- Fuel Cell (AREA)
Abstract
A pilot-scale test device of a single-chamber air cathode microbial fuel cell is mainly used for pilot-scale tests of domestic sewage and industrial organic sewage. The pilot plant consists of an anode, a cathode, an oxygen tube, an oxygen generator, a peristaltic pump, a flowmeter, an external resistor, an external lead, a water inlet tube, a water outlet tube, a reaction chamber and a pure oxygen chamber. After the sewage flows into the device from the water inlet pipe, the microorganisms attached to the anode oxidize and decompose organic pollutants in the sewage to generate protons and electrons; protons are transferred to the cathode region inside the chamber, and electrons are transferred to the cathode surface through the anode and the outer lead; the protons and electrons react with oxygen in the pure oxygen chamber on the cathode surface by oxygen reduction. The purified sewage in the cavity is discharged from the upper part of the cathode area through a water outlet pipe. Through this microbiological fuel cell pilot-scale plant processing sewage, microbiological fuel cell's the electrogenesis performance and pollutant removal efficiency obtain obviously promoting. The utility model discloses can be applicable to and handle multiple classification's organic sewage.
Description
Technical Field
The utility model belongs to the technical field of environmental engineering, concretely relates to microbial fuel cell pilot scale device that can handle sewage.
Background
The microbial fuel cell system utilizes microorganisms to degrade organic matters and converts chemical energy into electric energy, can obtain higher energy conversion rate theoretically, and has the advantages of wide raw material source, mild operation condition, good biocompatibility, cleanness and high efficiency. At present, many reports about microbial fuel cells are reported, a great deal of research is carried out on aspects of reducing the cost of the MFC, optimizing the structure of the MFC, reducing internal resistance, improving the power density of the MFC and the like, the power output is improved by several orders of magnitude, and in addition, the cost of treating sewage by utilizing the MFC is also greatly reduced. These research results also provide strong support for future large-scale industrial application. MFC has cathode and anode chambers, and the reaction mechanism differs in each chamber, and therefore the type of wastewater to be treated differs. The anodic compartment treatment is primarily the degradation of microorganisms by anaerobic respiration of a mixed population of bacteria in the anodic compartment solution, typically an anaerobic environment. The cathode chamber is treated according to the principle that the oxide of the cathode reacts with the electrons from the anode, so that the pollutants are reduced and degraded. The distance between the anode and the cathode in the microbial fuel cell with the single-chamber structure is greatly reduced, the mass transfer rate of the cathode is obviously improved, the internal resistance of the cell is greatly reduced, and finally the electricity production performance and the pollutant removal efficiency of the cell are obviously improved. The performance of the cathode material is also a main factor for limiting the electricity generation power of the microbial fuel cell. Compared with high-reducibility substances such as potassium dichromate, potassium permanganate and the like and potassium ferricyanide, the most ideal electron acceptor is oxygen in the air, and has the advantages of wide source, high oxidation-reduction potential and the like. Air cathodes are currently the most promising candidate for development and widespread use. Most of sewage is used for treating the microbial fuel cell, and currently, difficultly-degradable organic sewage, domestic sewage, industrial sewage and the like are researched. At present, the research on the air cathode microbial fuel cell technology is mostly concentrated on the laboratory stage, and a mature single-chamber air cathode microbial fuel cell device is not available.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an one set of air cathode microbial fuel cell pilot scale device for accomplishing the purpose of small-scale sewage treatment, improves the pollutant and gets rid of efficiency.
The utility model discloses air cathode microbial fuel cell pilot scale device comprises positive pole, negative pole, oxygen hose, oxygen generator, peristaltic pump, flowmeter, outer resistance, outer wire, inlet tube, outlet pipe, reacting chamber and pure oxygen chamber.
The anode and the cathode are arranged in the same reaction chamber, the openings of the anode and the cathode are oppositely designed and connected by an external lead, and the external lead is connected to an external resistor; a water inlet pipe is connected to the lower part of the anode area of the reaction chamber and is used for introducing sewage into the interior of the microbial fuel cell cavity;
the right side of the reaction chamber is a pure oxygen chamber which is externally connected to the oxygen generator and used for pumping the prepared pure oxygen into the pure oxygen chamber so as to complete oxygen reduction reaction on the surface of the cathode;
and the upper part of the cathode region of the cavity is connected with a water outlet pipe, and the tail end of the water outlet pipe is connected with a flow meter and a peristaltic pump for discharging supernatant in time.
The anode adopts graphite carbon felt.
The cathode takes a stainless steel net as a current collector. One side of the net is rolled by carbon black and polytetrafluoroethylene (mass ratio of 3:7), and the other side of the net is rolled by activated carbon and polytetrafluoroethylene binder (mass ratio of 6:1), so that the structure can prevent sewage from entering the pure oxygen chamber.
The water outlet pipe peristaltic pump and the flow meter are used for adjusting the retention time of sewage in the device.
The oxygen tube, the oxygen generator and the pure oxygen chamber ensure that the cathode reduction electron acceptor is pure oxygen, and the oxygen reduction process can be greatly improved.
The utility model discloses compare the outstanding aspect that embodies below with the single-chamber air cathode microbial fuel cell in laboratory stage:
the utility model greatly improves the water inlet flow and can meet the treatment capacity of treating 1 cubic meter of sewage per day; meanwhile, the surface areas of the cathode and the anode are greatly increased, so that the pollutant removal efficiency and the electricity generation performance of the battery are improved; the pure oxygen chamber area ensures that the oxygen electron acceptor continuously participates in the reaction, thereby promoting the oxygen reduction process.
Drawings
FIG. 1 is a schematic structural diagram of a pilot plant of a single-chamber air cathode microbial fuel cell
Detailed Description
The technical scheme of the utility model is not limited to following embodiment, still can adjust and carry out other embodiments.
The first embodiment is as follows: the single-chamber air cathode microbial fuel cell pilot-scale test device of the embodiment is composed of an anode 1, a cathode 2, an oxygen tube 3, an oxygen generator 4, a peristaltic pump 5, a flow meter 6, an external resistor 7, an external lead 8, a water inlet pipe 9, a water outlet pipe 10, a reaction chamber 11 and a pure oxygen chamber 12;
the anode 1 and the cathode 2 are arranged in the same reaction chamber, the anode 1 and the cathode 2 are oppositely opened and connected by an external lead 8, and the external lead 8 is connected with an external resistor 7; the lower part of the anode 1 area of the reaction chamber is connected with a water inlet pipe 9 for leading sewage into the interior of the microbial fuel cell chamber;
the right side of the reaction chamber 11 is a pure oxygen chamber 12, the pure oxygen chamber 12 is connected to the oxygen generator 4, and the pure oxygen chamber 12 is used for pumping prepared pure oxygen into the pure oxygen chamber to complete oxygen reduction reaction on the surface of the cathode;
the upper part of the cathode region of the cavity is connected with a water outlet pipe 10, and the tail end of the water outlet pipe 10 is connected with a flow meter 6 and a peristaltic pump 5 for discharging supernatant liquid in time.
The anode adopts graphite carbon felt.
The cathode takes a stainless steel net as a current collector. One side of the net is rolled by carbon black and polytetrafluoroethylene (mass ratio of 3:7), and the other side of the net is rolled by activated carbon and polytetrafluoroethylene binder (mass ratio of 6:1), so that the structure can prevent sewage from entering the pure oxygen chamber.
The water outlet pipe peristaltic pump and the flow meter are used for adjusting the retention time of sewage in the device.
The oxygen tube, the oxygen generator and the pure oxygen chamber ensure that the cathode reduction electron acceptor is pure oxygen, and the oxygen reduction process can be greatly improved.
This embodiment can change dwell time through adjusting into the velocity of flow and when handling actual sewage, and suitable dwell time is favorable to improving pilot plant and removes ability and electrogenesis performance to the pollutant.
The device can be used for treating domestic sewage and industrial organic sewage, and can be used for simulating domestic sewage (COD is about 1000mg L)-1) Carrying out continuous water inlet treatment with the water inlet and outlet flow rate of 12mL s-1Continuously running for about 48 hours, wherein the COD removal rate is 88.60 percent, and the electricity generation performance of the microbial fuel cell is 42.5Wm-3。
Claims (3)
1. A kind of single-chamber air cathode microbiological fuel cell pilot plant, characterized by that: the microbial fuel cell pilot-scale test device is composed of an anode (1), a cathode (2), an oxygen tube (3), an oxygen generator (4), a peristaltic pump (5), a flowmeter (6), an external resistor (7), an external lead (8), a water inlet pipe (9), a water outlet pipe (10), a reaction chamber (11) and a pure oxygen chamber (12);
the anode (1) and the cathode (2) are arranged in the reaction chamber (11), the openings of the anode (1) and the cathode (2) are oppositely designed and connected by an external lead (8), and the external lead (8) is connected with an external resistor (7); the lower part of the anode (1) area of the reaction chamber is connected with a water inlet pipe (9) for leading the waste sewage into the interior of the microbial fuel cell chamber;
the right side of the reaction chamber (11) is provided with a pure oxygen chamber (12), the pure oxygen chamber (12) is outwards connected to the oxygen generator (4) and is used for pumping prepared pure oxygen into the pure oxygen chamber so as to complete oxygen reduction reaction on the surface of the cathode; and the upper part of the cathode region of the cavity is connected with a water outlet pipe (10), and the tail end of the water outlet pipe (10) is connected with a flow meter (6) and a peristaltic pump (5) and is used for discharging supernatant liquid in time.
2. The pilot plant of a single-chamber air-cathode microbial fuel cell according to claim 1, characterized in that the anode (1) employs graphite carbon felt.
3. The single-chamber air cathode microbial fuel cell pilot plant of claim 1, characterized in that, the negative pole (2) uses stainless steel net as current collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022334104.XU CN214457095U (en) | 2020-10-20 | 2020-10-20 | Single-chamber air cathode microbial fuel cell pilot plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022334104.XU CN214457095U (en) | 2020-10-20 | 2020-10-20 | Single-chamber air cathode microbial fuel cell pilot plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214457095U true CN214457095U (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022334104.XU Expired - Fee Related CN214457095U (en) | 2020-10-20 | 2020-10-20 | Single-chamber air cathode microbial fuel cell pilot plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214457095U (en) |
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2020
- 2020-10-20 CN CN202022334104.XU patent/CN214457095U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211022 |