CN105600930A - Nitrogen and phosphorus removal electricity generator - Google Patents

Nitrogen and phosphorus removal electricity generator Download PDF

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Publication number
CN105600930A
CN105600930A CN201610133941.1A CN201610133941A CN105600930A CN 105600930 A CN105600930 A CN 105600930A CN 201610133941 A CN201610133941 A CN 201610133941A CN 105600930 A CN105600930 A CN 105600930A
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Prior art keywords
pond
sewage
fuel cell
anaerobic
anaerobic pond
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CN201610133941.1A
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Chinese (zh)
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CN105600930B (en
Inventor
张立成
毛天广
袁雅姝
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Shenyang Architecture University Design Group Co.,Ltd.
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ARCHITECTURAL DESIGNING INSTITUTE OF SHENYANG JIANZHU UNIVERSITY
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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
    • C02F3/30—Aerobic and anaerobic processes
    • 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
    • C02F3/005—Combined electrochemical biological processes
    • 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
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/308—Biological phosphorus removal
    • 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
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/105—Phosphorus compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C02F2101/163—Nitrates
    • 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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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Biochemistry (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

The invention discloses a nitrogen and phosphorus removal electricity generator, and belongs to the technical field of sewage treatment. A traditional A2/O technology and a microbial fuel cell are coupled. The nitrogen and phosphorus removal electricity generator comprises a water tank, an anaerobic pond, an oxygen shortage pond, an aerobiotic pond and a settling pond, wherein the water tank, the anaerobic pond, the oxygen shortage pond, the aerobiotic pond and the settling pond are sequentially connected. The anaerobic pond and the aerobiotic pond are separated through a proton exchange membrane, the anaerobic pond serves as an anode chamber of a microbial fuel cell, the aerobiotic pond serves as a cathode chamber of the microbial fuel cell, the anode chamber and the cathode chamber are respectively and externally connected with a resistance box through a carbon felt electrode and a copper wire respectively, and a closed loop is formed; the oxygen shortage pond is connected with the aerobiotic pond through a mixed liquid refluxing pipe, the anaerobic pond is connected with the settling pond through a refluxing sludge pipe, and the settling pond is further provided with a water outlet and a sludge discharging opening. Electric energy is generated while sewage treatment, and the A2/O technology and the microbial fuel cell technology are coupled. According to the method, domestic sewage is treated through the A2/O technology, the concentration of COD in sewage, the concentration of TP in the sewage and the concentration of TN in the sewage are reduced, a stable voltage value is generated while water body purifying, pollutants in the sewage are effectively reduced, and electric energy is generated.

Description

Denitrogenation dephosphorizing electrogenesis device
Technical field
The invention belongs to technical field of sewage, particularly relate to a kind of denitrogenation dephosphorizing electrogenesis device, in the pollutant such as COD in disposing of sewage, nitrogen, phosphorus, produce the new technology of electric energy.
Background technology
Traditional waste water treatment process is mainly made up of anaerobism, aerobic, anoxic reacter, A2/ O technique is its Typical Representative, the conventional process of Ye Shi sewage treatment plant synchronous denitrification dephosphorizing simultaneously, sewage is in the process of three difference in functionality subregions of flowing through, under the effect of different microorganisms flora, organic matter, nitrogen, phosphorus in sewage are removed, have technological process simple, be easy to operational management, hydraulic detention time is short, effluent quality good and excess sludge phosphorus content advantages of higher. But people, in the time removing the organic matter that can be degraded by microorganisms in sewage, have but ignored the value of its potential chemical energy and recoverable, have caused certain wasting of resources, even need to expend a large amount of energy for this reason. Microbiological fuel cell is the organic matter utilizing in the catalytic action degradation of sewage of microorganism, chemical energy is converted into the novel reactor of electric energy, has just made up this loss; But microbiological fuel cell is to reducing the pollutant such as nitrogen, phosphorus in sewage without obvious removal effect, and A2/ O technique is advantageous in this respect. Relevant A2The research of/O technique and microbiological fuel cell coupling also belongs to blank field at home and abroad, after coupling device successful operation, produces stable electric energy in disposing of sewage, and has very high theory and using value.
Summary of the invention
For the technical problem of above-mentioned existence, in order to overcome A2A large amount of organic energy waste that/O technique causes in the process of disposing of sewage and the problem of global renewable green energy resource crisis, and strengthen the removal effect of microbiological fuel cell to the pollutant such as nitrogen, phosphorus in sewage. The invention provides a kind of denitrogenation dephosphorizing electrogenesis device, it is by traditional A2The new device of/O technique and microbiological fuel cell coupling, purifies waste water thereby this device not only can reduce the concentration of COD in sewage, TN and TP, and can utilize the catalytic action of microorganism to produce electric energy.
The object of the invention is to be achieved through the following technical solutions:
A kind of denitrogenation dephosphorizing electrogenesis device, comprise the water tank connecting successively, anaerobic pond, anoxic pond, Aerobic Pond and sedimentation basin, between anaerobic pond and Aerobic Pond, separated by PEM, wherein anaerobic pond is as the anode chamber of microbiological fuel cell, Aerobic Pond is as the cathode chamber of microbiological fuel cell, anode chamber and cathode chamber be outer meeting resistance case respectively, form closed-loop path, between anoxic pond and Aerobic Pond, connect by mixed-liquor return pipeline, between anaerobic pond and sedimentation basin, connect by returned sludge pipeline, on sedimentation basin, be also provided with delivery port and mud discharging mouth, in disposing of sewage, produce electric energy, realize A2The coupling of/O technique and two kinds of techniques of microbiological fuel cell.
Further, described anaerobic pond and Aerobic Pond, respectively by being enriched with electrode and the wire external circuits of a large amount of microorganisms, form closed-loop path.
Further, described anaerobic pond and anoxic pond are all established top cover, interior agitating device.
Further, in described Aerobic Pond, establish aerator.
Further, the bottom of described anaerobic pond, anoxic pond, Aerobic Pond and sedimentation basin is funnel-form, and outlet at bottom is equipped with draining valve.
Beneficial effect of the present invention is:
The present invention utilizes traditional A2/ O technique and microbiological fuel cell coupling technique are processed sanitary sewage, can in reducing COD, TP in sewage and TN concentration, produce stable magnitude of voltage, have both effectively processed the pollutant in sewage, have produced again clean electric energy.
Brief description of the drawings
Fig. 1 is process chart of the present invention.
Fig. 2 is fundamental diagram of the present invention.
Fig. 3 is electrogenesis part schematic diagram of structure of the present invention.
In figure: 1. water tank, 2. anaerobic pond, 3. anoxic pond, 4. PEM, 5. mixed-liquor return pipeline, 6. Aerobic Pond, 7. sedimentation basin, 8. delivery port, 9. mud discharging mouth, 10. sludge reflux pipeline, 11. resistance boxes, 12. pumps, 13. copper conductors, 14. universal meters, 15. carbon felt electrodes, 16. agitators, 17. aeration heads.
Detailed description of the invention
Describe the present invention below in conjunction with drawings and Examples.
Embodiment: as shown in Figure 1, the present invention includes the water tank inlet 1 connecting successively, anaerobic pond 2, anoxic pond 3, Aerobic Pond 6 and sedimentation basin 7, between anaerobic pond 2 and Aerobic Pond 6, separated by PEM 4, wherein anaerobic pond 2 is as the anode chamber of microbiological fuel cell, Aerobic Pond 6 is as the cathode chamber of microbiological fuel cell, anode chamber and cathode chamber are respectively by carbon felt electrode and copper conductor outer meeting resistance case 11, form closed-loop path, between anoxic pond 3 and Aerobic Pond 6, connect by mixed-liquor return pipeline 5, between anaerobic pond 2 and sedimentation basin 7, connect by sludge reflux pipeline 10, on sedimentation basin 7, be also provided with delivery port 8 and mud discharging mouth 9, in disposing of sewage, produce electric energy, realize A2The coupling of/O technique and two kinds of techniques of microbiological fuel cell.
On inlet pipeline, mixed-liquor return pipeline 5 and the sludge reflux pipeline 10 of described water tank 1, be all connected with pump; Anaerobic pond 2 and anoxic pond 3 are all established top cover, thereby inside is equipped with agitator, stirring mixes muddy water, in Aerobic Pond 6, establishes aerator; The bottom of described anaerobic pond 2, anoxic pond 3, Aerobic Pond 6 and sedimentation basin 7 is funnel-form, and outlet at bottom is equipped with draining valve.
The present invention, in the process of disposing of sewage, utilizes A2The concentration of COD, TN and TP in/O technique reduction sewage, purify waste water, anode chamber using anaerobic pond as microbiological fuel cell, Aerobic Pond is as the cathode chamber of microbiological fuel cell, centre is separated by PEM, anode chamber and cathode chamber, respectively by being enriched with carbon felt electrode and the copper conductor outer meeting resistance case of a large amount of microorganisms, form closed-loop path, with anaerobism, anoxic, the aerobic traditional A combining2/ O technique is basis, in disposing of sewage, produces certain electric energy, realizes A2The coupling of/O and two kinds of techniques of microbiological fuel cell. The index of the present invention COD, ammonia nitrogen and total phosphorus in run duration sewage is respectively 300mg/L, 40mg/L and 10mg/L left and right, the dissolved oxygen concentration of controlling anaerobic pond, anoxic pond and Aerobic Pond is respectively 0.2mg/L, 0.5mg/L and 1.0-2.0mg/L, the water temperature of anoxic pond is controlled at 15～25 DEG C, water temperature as the Aerobic Pond of cathode chamber is controlled at 30～35 DEG C, and sludge concentration (MLSS) is controlled at 5000mg/L left and right. First sanitary sewage is delivered to anaerobic pond (anode chamber) mixes with returned sludge, under the effect of amphimicrobian zymogenous bacteria, part easily biological-degradable larger molecular organics is converted into micromolecular volatile fatty acid (VFA), polyP bacteria absorbs the synthetic PHB of these small organic molecules and is stored in cell, poly-phosphorus in cell is hydrolyzed into orthophosphates simultaneously, be discharged in water, the energy of release can be survived for the aerobic polyP bacteria of obligate under the oppressive environment of anaerobism; Meanwhile, organic matter decomposes and discharges electronics and proton under electrogenesis microbial action, and electronics is delivered to negative electrode by external circuit and forms electric current, and proton is delivered to negative electrode by PEM. Sewage enters anoxic pond subsequently, and denitrifying bacterium utilizes the nitrate in organic matter and the backflow mixed liquor in sewage to carry out denitrification, and the nitrogen of generation, can while carbon elimination denitrogenation with outside gaseous form discharge system. In the time that sewage enters Aerobic Pond (cathode chamber), under the effect of nitrifier, be nitrate nitrogen by the mineralized nitrogen in sewage, carry out denitrification denitrogenation through mixed-liquor return to anoxic pond; Now organic concentration is very low, polyP bacteria is mainly that the PHB by storing in decomposer obtains energy for self growth and breeding, excess absorbs the dissolved phosphorus in water simultaneously, form with Quadrafos stores in vivo, through precipitation, phosphorous high mud is separated from water, reached the effect of dephosphorization; The electronics that anode produces is delivered to negative electrode by external circuit and forms electric current, and proton is delivered to negative electrode by PEM, oxidant (O2) obtain electronics at negative electrode and be reduced with proton and be combined into water. Anode and cathode is connected by copper conductor, forms external circuit, and then forms electrical potential difference. Need COD, the TN in continuous detecting course of reaction, change in concentration and the electrogenesis situation of TP at startup run duration.
In Fig. 2, device global shape is rectangle, and in device, the bottom of each reactor is funnel-form, is provided with draining valve. Device is in startup running, water inlet, mixed-liquor return and the sludge reflux of test all adopts pump to carry, all the other current all turn round by gravity current, pass through successively anaerobic pond (anode chamber), anoxic pond, Aerobic Pond (cathode chamber) and sedimentation basin, sewage is carried out to purified treatment.
As shown in Figure 3, for the electrogenesis part schematic diagram of structure of apparatus of the present invention, anode chamber's (anaerobic pond) is spatially adjacent with cathode chamber (Aerobic Pond), centre is separated by PEM, cathode and anode electrode used therein material is the carbon felt that is enriched with a large amount of microorganisms, connected by copper conductor, outer meeting resistance case, resistance box two termination voltmeters carry out the mensuration of magnitude of voltage.

Claims (5)

1. a denitrogenation dephosphorizing electrogenesis device, is characterized in that: comprise the water tank, the anaerobism that connect successivelyPond, anoxic pond, Aerobic Pond and sedimentation basin, separated by PEM between anaerobic pond and Aerobic Pond, itsMiddle anaerobic pond is as the anode chamber of microbiological fuel cell, and Aerobic Pond is as the negative electrode of microbiological fuel cellChamber, anode chamber and cathode chamber be outer meeting resistance case respectively, forms closed-loop path, between anoxic pond and Aerobic PondConnect by mixed-liquor return pipeline, between anaerobic pond and sedimentation basin, connect by returned sludge pipeline, heavyOn pond, shallow lake, be also provided with delivery port and mud discharging mouth, in disposing of sewage, produce electric energy, realize A2/ O workThe coupling of skill and two kinds of techniques of microbiological fuel cell.
2. denitrogenation dephosphorizing electrogenesis device according to claim 1, is characterized in that: described anaerobic pond andAerobic Pond, respectively by being enriched with electrode and the wire external circuits of a large amount of microorganisms, forms closed returningRoad.
3. denitrogenation dephosphorizing electrogenesis device according to claim 1, is characterized in that: described anaerobic pond and lackingTop cover is all established in oxygen pond, interior agitating device.
4. denitrogenation dephosphorizing electrogenesis device according to claim 1, is characterized in that: in described Aerobic Pond, establishAerator.
5. denitrogenation dephosphorizing electrogenesis device according to claim 1, is characterized in that: described anaerobic pond, lackThe bottom of oxygen pond, Aerobic Pond and sedimentation basin is funnel-form, and outlet at bottom is equipped with draining valve.
CN201610133941.1A 2016-03-09 2016-03-09 Denitrogenation dephosphorizing produces electricity device Active CN105600930B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107381779A (en) * 2017-09-01 2017-11-24 上海理工大学 A kind of saprobia electro photoluminescence processing and tail gas synergy wetland purification system
CN107746164A (en) * 2017-11-23 2018-03-02 沈阳建筑大学 Reduce the electrochemistry AAO devices and its processing method of Sludge in Sewage Treatment amount
CN109912145A (en) * 2019-04-01 2019-06-21 北京工业大学 A kind of aerobic particle mud electricity production device
CN111635004A (en) * 2020-04-30 2020-09-08 中国科学院生态环境研究中心 Sewage biological treatment device and process and application thereof

Citations (4)

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JP2006081963A (en) * 2004-09-14 2006-03-30 Hitachi Kiden Kogyo Ltd Method and apparatus for treating sludge-containing returned water
CN103123977A (en) * 2013-03-07 2013-05-29 浙江工商大学 Simultaneous nitrogen and phosphorus removal microbial fuel cell
CN104386818A (en) * 2014-11-17 2015-03-04 浙江大学 Wastewater treatment system and method employing dual-chamber MFC (microbial fuel cell) combined with A/O process
CN205419925U (en) * 2016-03-09 2016-08-03 沈阳建筑大学建筑设计研究院 Electric installation is produced to nitrogen and phosphorus removal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006081963A (en) * 2004-09-14 2006-03-30 Hitachi Kiden Kogyo Ltd Method and apparatus for treating sludge-containing returned water
CN103123977A (en) * 2013-03-07 2013-05-29 浙江工商大学 Simultaneous nitrogen and phosphorus removal microbial fuel cell
CN104386818A (en) * 2014-11-17 2015-03-04 浙江大学 Wastewater treatment system and method employing dual-chamber MFC (microbial fuel cell) combined with A/O process
CN205419925U (en) * 2016-03-09 2016-08-03 沈阳建筑大学建筑设计研究院 Electric installation is produced to nitrogen and phosphorus removal

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107381779A (en) * 2017-09-01 2017-11-24 上海理工大学 A kind of saprobia electro photoluminescence processing and tail gas synergy wetland purification system
CN107381779B (en) * 2017-09-01 2020-09-01 上海理工大学 Sewage biological electrical stimulation treatment and tail gas synergistic wetland purification system
CN107746164A (en) * 2017-11-23 2018-03-02 沈阳建筑大学 Reduce the electrochemistry AAO devices and its processing method of Sludge in Sewage Treatment amount
CN107746164B (en) * 2017-11-23 2023-06-09 沈阳建筑大学 electrochemical-AAO device for reducing sludge amount in sewage treatment and treatment method thereof
CN109912145A (en) * 2019-04-01 2019-06-21 北京工业大学 A kind of aerobic particle mud electricity production device
CN109912145B (en) * 2019-04-01 2022-02-15 北京工业大学 Aerobic granular sludge power generation device
CN111635004A (en) * 2020-04-30 2020-09-08 中国科学院生态环境研究中心 Sewage biological treatment device and process and application thereof

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Address after: 110000 No.9-10 Jianyuan Street, Shenhe District, Shenyang City, Liaoning Province

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Address before: 110168 Liaoning province Shenyang Hunnan Hunnan Road No. 9 University of Architecture Design Institute

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