CN203871429U - Simultaneous phosphorus and nitrogen removal double-chamber microbiological fuel cell - Google Patents
Simultaneous phosphorus and nitrogen removal double-chamber microbiological fuel cell Download PDFInfo
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- CN203871429U CN203871429U CN201420193966.7U CN201420193966U CN203871429U CN 203871429 U CN203871429 U CN 203871429U CN 201420193966 U CN201420193966 U CN 201420193966U CN 203871429 U CN203871429 U CN 203871429U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses a simultaneous phosphorus and nitrogen removal double-chamber microbial fuel cell. The fuel cell comprises a reaction system and a data collecting and monitoring system, wherein the reaction system comprises an anodic reaction system and a cathodic reaction system, the anodic reaction system comprises an anode microbe, an anode electrode, an anode chamber, a sample connection opening, a sample injection opening and an electrolytic solution; the cathodic reaction system comprises a cathodic microbe, a cathode electrode, a cathode chamber, a water inlet pipe, a water outlet pipe, a constant flow pump hose, an air pump, a brown surge flask, an aerator head, a constant flow pump and an electrolytic solution; the anode electrode and the cathode electrode are respectively and closely adhered to the two sides of a proton exchange membrane, and the data collecting and monitoring system comprises a static wire, a load line, a conducting line, a data collector and a computer. The simultaneous phosphorus and nitrogen removal double-chamber microbial fuel cell operates intermittently, the structure is simple, the internal resistance is small, and the property is efficient and steady; meanwhile, the simultaneous phosphorus and nitrogen removal double-chamber microbial fuel cell has the effects of productivity and water treatment, so that a new method for removing phosphorus and nitrogen by the microbial fuel cell is developed.
Description
Technical field
The utility model belongs to biological fuel cell technical field, relates in particular to a kind of synchronous denitrification dephosphorizing double-chamber microbiological fuel cell.
Background technology
Body eutrophication is called again wawter bloom and refers to the too much caused water pollution phenomenons of plant nutrient substance content such as Water phosphorus such as lake, river, reservoir.Due to the enrichment of Water phosphorus nutrition material, cause algae and other planktonic rapid breedings, Dissolved Oxygen in Water content is declined, cause algae, planktonic organism, plant, aquatic organism and the even contamination phenomenon of disappearance of fish decline.The control of eutrophication is that water pollutes the most complicated in processing and difficult problem, and common secondary biochemical treatment method can only be removed nitrogen, the phosphorus of 30-50%.
Microbiological fuel cell (Microbial Fuel cells is called for short MFC) is a kind of device that utilizes microbe chemical energy to be converted into electric energy.Utilize microbiological fuel cell, not only can be directly by the organic matter degradation in water body or mud, and the electronics producing in organic metabolism process can be converted into electric current, thus obtain electric energy.Under the dual-pressure of environmental pollution and energy crisis, because microbiological fuel cell can be processed waste water and produce electric energy simultaneously, the research and development of MFC technology enjoys the attention of national governments and major company, is considered to 21 century cleaning, efficient generation technology.Electricity generation by microorganism taking waste water as fuel is a kind of new renewable energy utilization mode, has multiple advantages such as normal temperature generating, clean and effective, reusable edible.
The biological oxidation that the basic electrogenesis principle of MFC is (1) matrix (being fuel): organic substance is oxidized under microbial action in anode chamber, produces electronics, proton and metabolite; (2) anode reduction: the electronics that oxidation operation produces is passed to anode surface from microbial cell, makes electrode reduction; (3) external circuit electric transmission: electronics arrives negative electrode via external circuit; (4) protolysis: the proton that oxidation operation produces moves to cathode chamber from anode chamber, arrives cathode surface; (5) cathode reaction: the oxidation state material in cathode chamber be the proton that comes of electron acceptor and anode transmission and electronics in cathode surface generation reduction reaction, oxidation state material is reduced.Product transmission, the consumption of electronics form electric current, complete electricity generation process.
Utilize microbiological fuel cell technical finesse nitrogen and phosphorus pollution waste water, not only can high efficiency remove nitrogen phosphorus in waste water, also have electric energy to produce simultaneously.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of synchronous denitrification dephosphorizing double-chamber microbiological fuel cell is provided, and concrete technical scheme is as follows.
A kind of synchronous denitrification dephosphorizing double-chamber microbiological fuel cell, comprises reaction system and data acquisition and monitoring system; Described reaction system comprises anode reaction system and cathode reaction system, and wherein anode reaction system comprises anode microbe, anode electrode, anode chamber, sample tap, injection port and electrolyte; Cathode reaction system comprises cathode microbial, cathode electrode, cathode chamber, water inlet pipe, outlet pipe, constant flow pump flexible pipe, air-blowing pump, brown surge flask, aeration head, constant flow pump and electrolyte; In cathode reaction system, electrolyte passes through outlet pipe, the first constant flow pump flexible pipe, brown surge flask, the second constant flow pump flexible pipe, water inlet pipe successively, circulation in forming under the effect of constant flow pump; Air-blowing pump is connected with the aeration head in brown surge flask by the 3rd constant flow pump flexible pipe, and anode chamber and cathode chamber are separated by proton exchange membrane, and anode electrode and cathode electrode are close to respectively the both sides of proton exchange membrane; Data acquisition and monitoring system comprises conductive filament, load, wire, data acquisition unit and computer, and anode electrode and cathode electrode are all connected with conductive filament, and conductive filament is connected to form closed-loop path by wire and load again; Load two ends are also connected with the input of data acquisition unit by wire, and the output of data acquisition unit is connected with computer input end.
Further, described anode chamber is identical with size with cathode chamber structure, and sample tap, injection port are positioned at top, anode chamber.
Further, constant flow pump acts on the second constant flow pump flexible pipe.
Further, outlet pipe is connected with the delivery port at cathode chamber top; Water inlet pipe passes the water inlet at cathode chamber top and stretches into cathode chamber inner bottom part.
Further, anode chamber is except sample introduction and sampling process, and the sample tap at top, anode chamber and injection port are closed condition always, to guarantee that anode chamber is anaerobic environment; Described air-blowing pump is open mode always, makes cathode reaction system be oxygen condition always, and in brown surge flask, aeration rate size is regulated by the flow control button of air-blowing pump.
Further, in anode chamber, dissolved oxygen is 0.05 ~ 0.1 mg/L, and brown surge flask electrolyte inside dissolved oxygen is 2.0 ~ 3.5 mg/L.
Further, described electrolyte is Nitrogen-and Phosphorus-containing organic wastewater, and initial pH is 7.0 ~ 7.5.
Further, when this microbiological fuel cell output voltage is less than after 50 mV, brown surge flask electrolyte inside is discharged to outside reaction system; Electrolyte in anode chamber is back in brown surge flask, then in anode chamber, fill it up with fresh untreated Nitrogen-and Phosphorus-containing organic wastewater, so circular flow, adds reaction system to arrive using Nitrogen-and Phosphorus-containing organic wastewater and discharges the whole time period of reaction system as a reaction time.
Further, the height of anode chamber and cathode chamber is greater than the width of horizontal direction.
Further, anode electrode is identical with cathode electrode area, is carbon cloth, carbon paper, carbon felt, graphite felt or graphite cake, and both materials are identical or different, and the volume ratio of electrode area and reative cell is 1 cm
2: 0.1 ~ 10 cm
3.
Further, described microbe is the active sludge microorganism with denitrogenation dephosphorizing function from sewage treatment plant's inoculation.
Further, described electrolyte is Nitrogen-and Phosphorus-containing organic wastewater, and initial pH is 7.0 ~ 7.5.
Further, in anode chamber and cathode chamber, be full of electrolyte, when primary starting, inoculation bacterium liquid is that volume ratio is the anaerobic and aerobic mud supernatant of sewage treatment plant's secondary sedimentation tank of 1:1, and inoculation bacteria liquid amasss with chamber volume than being 1:3.Add reaction system to arrive using Nitrogen-and Phosphorus-containing organic wastewater and discharge the whole time period of reaction system as a reaction time.In the time that output voltage is less than 50 mV, electrolyte in brown surge flask is discharged to outside reaction system, anode chamber's electrolyte inside is all back in brown surge flask, adds fresh untreated Nitrogen-and Phosphorus-containing organic wastewater (artificial distribution or actual waste water all can) in anode chamber.
Further, described anode chamber is a strictly anaerobic environment, and anolyte dissolved oxygen is 0.05 ~ 0.1 mg/L.The air-blowing pump that brown surge flask connects is always in open mode, and by air-blowing pump discharge control button control aeration rate size, thereby the dissolved oxygen of control cathode liquid, in cathode chamber, dissolved oxygen is controlled within the scope of 2.0 ~ 3.5 mg/L.
Further, described data acquisition unit is Keithley 2007 type data acquisition units.
Compared with the prior art, the utlity model has following beneficial effect:
(1) the utility model just can be realized synchronous denitrification dephosphorizing and electrogenesis without the chemical substance that adds the iron cyanide and permanganate etc. and have high oxidation activity;
(2) anode chamber's fluid is all back to cathode chamber, effectively alleviates the problem of anode and cathode pH, and can make organic clearance further improve;
(3) utilize surge flask aeration can reduce the diffusion of cathode chamber oxygen anode chamber, improved the electrogenesis stability of efficiency of fuel cell generation and whole reactor;
(4) by the flow control of air-blowing pump, can obtain different denitrogenation dephosphorizings and electrogenesis effect, reactor can move flexibly;
(5) the negative electrode circulatory system has been strengthened the flow of matter of reative cell inside, has accelerated electrogenesis speed;
(6) anode electrode and cathode electrode are close to proton exchange membrane both sides, and two interelectrode distances are very little, greatly reduced the internal resistance of cell;
(7) multiple effect that provides electron acceptor, nitrobacteria Ammonia Nitrification, Denitrifying Phosphate Accumulating Organisms to inhale phosphorus denitrification and the aerobic suction phosphorus of polyP bacteria has been provided negative electrode aeration, reduces energy consumption.
(8) Nitrogen-and Phosphorus-containing organic wastewater first after through anode reaction system and the processing of cathode reaction system, can the organic substance in Nitrogen-and Phosphorus-containing organic wastewater be decomposed more thorough.
Brief description of the drawings
Fig. 1 is a kind of synchronous denitrification dephosphorizing double-chamber microbiological fuel cell structural representation.
Fig. 2 is the relation of power of battery density and cell voltage and current density when cathode chamber liquid dissolved oxygen is 3.5 mg/L left and right in embodiment.
Fig. 3 is the graph of a relation of power of battery density and cell voltage and current density when cathode chamber liquid dissolved oxygen is 2.5 mg/L left and right in embodiment.
Embodiment
Below by specific embodiment, execution mode of the present utility model is described in detail, but enforcement of the present utility model is not limited to this.
As Fig. 1, a kind of synchronous denitrification dephosphorizing double-chamber microbiological fuel cell, comprises anode reaction system and cathode reaction system, and wherein anode reaction system comprises anode microbe 1, anode electrode 2, anode chamber 3, sample tap 5, injection port 6 and electrolyte; Cathode reaction system comprises cathode microbial 21, cathode electrode 20, cathode chamber 19, water inlet pipe 16, outlet pipe 17, constant flow pump flexible pipe, air-blowing pump 11, brown surge flask 14, aeration head 15, constant flow pump 12 and electrolyte; In cathode reaction system, electrolyte passes through outlet pipe 17, the first constant flow pump flexible pipe, brown surge flask 14, the second constant flow pump flexible pipe, water inlet pipe 16 successively, circulation in forming under the effect of constant flow pump 12; Air-blowing pump 11 is connected with the aeration head 15 in brown surge flask 14 by the 3rd constant flow pump flexible pipe, and anode chamber 3 and cathode chamber 19 are separated by proton exchange membrane 18, and anode electrode 2 and cathode electrode 20 are close to respectively the both sides of proton exchange membrane 15; Data acquisition and monitoring system comprises conductive filament 4, load 7, wire 8, data acquisition unit 9 and computer 10, and anode electrode 2 and cathode electrode 20 are all connected with conductive filament 4, and conductive filament 4 is connected to form closed-loop path by wire and load 7 again; Load 7 two ends are also connected with the input of data acquisition unit 9 by wire, and the output of data acquisition unit 9 is connected with computer 10 inputs.This example Anodic electrode 2 is carbon papers, and cathode electrode 20 is to scribble 0.5 mg/cm
2the carbon cloth of platinum carbon, and Catalytic Layer is towards proton exchange membrane 18.
External 1000 Ohmic resistances of battery, intermittent duty at ambient temperature, whenever cell voltage is during lower than 50 mV, brown surge flask 14 electrolyte insides are discharged to outside reaction system, anode chamber's 3 electrolyte are back to brown surge flask 14, add fresh untreated Nitrogen-and Phosphorus-containing organic wastewater in anode chamber 3.
Manual simulation's waste water formula: NTA 1.5 g/L, MgSO
43 g/L, MnSO
4h
2o 0.5 g/L, NaCl 1 g/L, FeSO
47H
2o 0.1 g/L, CaCl2H
2o 0.1 g/L, CoCl6H
2o 0.1 g/L, ZnCl 0.13 g/L, CuSO
45H
2o 0.01 g/L, AlK (SO
4)
212H
2o 0.01 g/L, H
3bO
30.01 g/L, NaMoO
40.025 g/L, NiCl6H
2o 0.024 g/L, Na
2wO
42H
2o 0.025 g/L, NaHCO
35.96 g/L, NaC
2h
3o
21.00 g/L, KH
2pO
40.54 g/L, NH
4cl 0.21 g/L, biotin 2 mg/L, dimension B 2 mg/L, dimension B
610 mg/L, riboflavin 5 mg/L, thiamines 5 mg/L, nicotinic acid 5 mg/L, pantothenic acid 5 mg/L, B
120.1 mg/L, p-aminobenzoic acid 5 mg/L, lipoic acid 5 mg/L.
This synchronous denitrification dephosphorizing double-chamber microbiological fuel cell starts as follows:
Nitrogen-and Phosphorus-containing manual simulation organic wastewater 80 ml are added in clean beaker, add again inoculation bacterium liquid 40 ml (inoculation bacterium liquid is that volume ratio is the anaerobic and aerobic mud supernatant of sewage treatment plant's secondary sedimentation tank of 1:1), mix, the mixed liquor of anode chamber's 3 use simulated wastewaters and inoculation bacterium liquid is full of to (approximately 28 ml), and residual mixed liquor approximately 92 ml are all added in brown surge flask 14.Anode chamber's 3 top injection ports 6 and sample tap 5 are sealed, opened constant flow pump 12 and air-blowing pump 11.After two days, electrolyte in brown surge flask 14 is discharged to outside reaction system, opens anode chamber's 3 top sample mouths 5, anode chamber's 3 electrolyte insides are all back in brown surge flask 14.So circular flow.Add reaction system to arrive using Nitrogen-and Phosphorus-containing organic wastewater and discharge the whole time period of reaction system as a reaction time.In the time that three cycles of operation of microbiological fuel cell output voltage stabilization are above, start-up course completes.
The synchronous denitrification dephosphorizing double-chamber microbiological fuel cell course of work is as follows:
Simulated wastewater joins anode chamber 3, and after moving 72 h, cell output voltage is less than 50 mV, discharge electrolyte in brown surge flask 14, whole electrolyte in anode chamber 3 is back to brown surge flask 14, in anode chamber 3, add fresh untreated simulated wastewater, after 72 h, repeat last round of operation.
Fig. 2 is in embodiment, the relation of power of battery density and cell voltage and current density when cathode chamber 19 electrolyte dissolved oxygens are 3.5 mg/L left and right.Battery is 1777 mA/m in current density
2time reach peak power output 531 mW/ m
2.Under this condition, nitrogen is almost without removal effect, and tp removal rate is more than 95%.
Fig. 3 is in embodiment, the relation of power of battery density and cell voltage and current density when cathode chamber 19 electrolyte dissolved oxygens are 2.5 mg/L left and right.Battery is 1427 mA/m in current density
2time reach peak power output 429 mW/m
2.Under this condition, the clearance of nitrogen phosphorus is more than 90%.
As can be seen from the above experimental data, move this double-chamber microbiological fuel cell with different cathode chambers 19 electrolyte dissolved oxygens, its electricity generation performance and the Nitrogen/Phosphorus Removal to waste water differ greatly.
Finally, it is also to be noted that, what more than enumerate is only some specific embodiment of the present utility model.Obviously, the utility model is not limited to above examples of implementation, can also have many distortion.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model, all should think protection range of the present utility model.
Claims (6)
1. a synchronous denitrification dephosphorizing double-chamber microbiological fuel cell, comprise reaction system and data acquisition and monitoring system, it is characterized in that: described reaction system comprises anode reaction system and cathode reaction system, wherein anode reaction system comprises anode microbe (1), anode electrode (2), anode chamber (3), sample tap (5), injection port (6) and electrolyte; Cathode reaction system comprises cathode microbial (21), cathode electrode (20), cathode chamber (19), water inlet pipe (16), outlet pipe (17), constant flow pump flexible pipe, air-blowing pump (11), brown surge flask (14), aeration head (15), constant flow pump (12) and electrolyte; In cathode reaction system, electrolyte passes through outlet pipe (17), the first constant flow pump flexible pipe, brown surge flask (14), the second constant flow pump flexible pipe, water inlet pipe (16) successively, circulation in forming under the effect of constant flow pump (12); Air-blowing pump (11) is connected with the aeration head (15) in brown surge flask (14) by the 3rd constant flow pump flexible pipe, anode chamber (3) and cathode chamber (19) are separated by proton exchange membrane (18), and anode electrode (2) and cathode electrode (20) are close to respectively the both sides of proton exchange membrane (15); Data acquisition and monitoring system comprises conductive filament (4), load (7), wire (8), data acquisition unit (9) and computer (10), anode electrode (2) and cathode electrode (20) are all connected with conductive filament (4), and conductive filament (4) is connected to form closed-loop path by wire and load (7) again; Load (7) two ends are also connected with the input of data acquisition unit (9) by wire, and the output of data acquisition unit (9) is connected with computer (10) input.
2. a kind of synchronous denitrification dephosphorizing double-chamber microbiological fuel cell according to claim 1, is characterized in that described anode chamber (3) is identical with size with cathode chamber (19) structure, and sample tap (5), injection port (6) are positioned at top, anode chamber (3).
3. a kind of synchronous denitrification dephosphorizing double-chamber microbiological fuel cell according to claim 1, is characterized in that constant flow pump (12) acts on the second constant flow pump flexible pipe.
4. a kind of synchronous denitrification dephosphorizing double-chamber microbiological fuel cell according to claim 1, is characterized in that outlet pipe (17) is connected with the delivery port at cathode chamber (19) top; Water inlet pipe (16) passes the water inlet at cathode chamber (19) top and stretches into cathode chamber (19) inner bottom part.
5. a kind of synchronous denitrification dephosphorizing double-chamber microbiological fuel cell according to claim 1, is characterized in that the height of anode chamber and cathode chamber is greater than the width of horizontal direction.
6. according to a kind of synchronous denitrification dephosphorizing double-chamber microbiological fuel cell described in claim 1 ~ 5 any one, it is characterized in that anode electrode (2) is identical with cathode electrode (20) area, be carbon cloth, carbon paper, carbon felt, graphite felt or graphite cake, both materials are identical or different, and the volume ratio of electrode area and reative cell is 1 cm
2: 0.1 ~ 10 cm
3.
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| CN201420193966.7U CN203871429U (en) | 2014-04-21 | 2014-04-21 | Simultaneous phosphorus and nitrogen removal double-chamber microbiological fuel cell |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956510A (en) * | 2014-04-21 | 2014-07-30 | 华南理工大学 | Microbial fuel cell with double chambers for simultaneous phosphorus and nitrogen removal |
| CN106532089A (en) * | 2016-09-13 | 2017-03-22 | 广东工业大学 | Micro-fuel cell device |
| CN110156250A (en) * | 2018-03-27 | 2019-08-23 | 北京欧美中科学技术研究院 | A kind of desulfurization deamination processing unit for the waste water that sulfur removal technology generates |
| CN114906996A (en) * | 2022-06-06 | 2022-08-16 | 北京林业大学 | Method for recovering phosphorus in sludge and synchronously generating electricity by using bluestone generated by microbial fuel cell |
-
2014
- 2014-04-21 CN CN201420193966.7U patent/CN203871429U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956510A (en) * | 2014-04-21 | 2014-07-30 | 华南理工大学 | Microbial fuel cell with double chambers for simultaneous phosphorus and nitrogen removal |
| CN106532089A (en) * | 2016-09-13 | 2017-03-22 | 广东工业大学 | Micro-fuel cell device |
| CN106532089B (en) * | 2016-09-13 | 2024-03-29 | 广东工业大学 | Micro fuel cell device |
| CN110156250A (en) * | 2018-03-27 | 2019-08-23 | 北京欧美中科学技术研究院 | A kind of desulfurization deamination processing unit for the waste water that sulfur removal technology generates |
| CN114906996A (en) * | 2022-06-06 | 2022-08-16 | 北京林业大学 | Method for recovering phosphorus in sludge and synchronously generating electricity by using bluestone generated by microbial fuel cell |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20141008 Termination date: 20190421 |