CN108033567B - Artificial wetland and microbial fuel cell wastewater treatment coupling device - Google Patents
Artificial wetland and microbial fuel cell wastewater treatment coupling device Download PDFInfo
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- CN108033567B CN108033567B CN201711384102.8A CN201711384102A CN108033567B CN 108033567 B CN108033567 B CN 108033567B CN 201711384102 A CN201711384102 A CN 201711384102A CN 108033567 B CN108033567 B CN 108033567B
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- 230000008878 coupling Effects 0.000 title claims abstract 9
- 238000010168 coupling process Methods 0.000 title claims abstract 9
- 238000005859 coupling reaction Methods 0.000 title claims abstract 9
- 239000000446 fuel Substances 0.000 title claims abstract 9
- 230000000813 microbial effect Effects 0.000 title claims abstract 9
- 238000004065 wastewater treatment Methods 0.000 title claims abstract 9
- 239000010410 layer Substances 0.000 claims abstract 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract 17
- 239000004020 conductor Substances 0.000 claims abstract 9
- 238000012856 packing Methods 0.000 claims abstract 9
- 239000000945 filler Substances 0.000 claims abstract 5
- 230000002572 peristaltic effect Effects 0.000 claims abstract 5
- 239000002344 surface layer Substances 0.000 claims abstract 5
- 230000001174 ascending effect Effects 0.000 claims abstract 4
- 238000011144 upstream manufacturing Methods 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims 4
- 239000002245 particle Substances 0.000 claims 3
- 239000011231 conductive filler Substances 0.000 claims 2
- 229910001220 stainless steel Inorganic materials 0.000 claims 2
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 229910002804 graphite Inorganic materials 0.000 claims 1
- 239000010439 graphite Substances 0.000 claims 1
- 239000011148 porous material Substances 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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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
- C02F3/005—Combined electrochemical biological processes
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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
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Biodiversity & Conservation Biology (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
本发明提供的一种人工湿地与微生物燃料电池废水处理耦合装置，包括双室长方体板材箱、配水箱、进水管和进水蠕动泵，配水箱与进水管、进水蠕动泵、双室长方体板材箱依次连接。双室长方体板材箱中间设有隔板，分成阳极室和阴极室，阳极室和阴极室在双室长方体板材箱底部两室相通。双室长方体板材箱底部设有砾石连通层，阳极室自下而上依次设有阳极下行活性炭填料层、阳极中层导电填料层和阳极表面填充表层，阴极室自下而上依次设有阴极上行活性炭填料层、阴极上行砾石填充层和阴极顶层导电材料层。本发明公开的一种人工湿地与微生物燃料电池废水处理耦合装置，结构简单、操作方便。
The invention provides a coupling device for wastewater treatment of constructed wetlands and microbial fuel cells, including a double-chamber cuboid plate box, a water distribution tank, a water inlet pipe and a water inlet peristaltic pump, the water distribution tank and the water inlet pipe, the water inlet peristaltic pump, and the double-chamber cuboid plate. The boxes are connected in sequence. A separator is arranged in the middle of the double-chamber cuboid plate box, which is divided into an anode room and a cathode room, and the anode room and the cathode room are communicated with the two chambers at the bottom of the double-chamber cuboid plate box. The bottom of the double-chamber cuboid plate box is provided with a gravel connecting layer, the anode chamber is sequentially provided with an anode descending activated carbon packing layer, an anode middle conductive packing layer and an anode surface filling surface layer from bottom to top, and the cathode chamber is sequentially provided with cathode ascending activated carbon from bottom to top A filler layer, a cathode upstream gravel-packed layer and a cathode top conductive material layer. The invention discloses a coupling device for artificial wetland and microbial fuel cell wastewater treatment, which has simple structure and convenient operation.
Description
Technical Field
The invention belongs to the technical field of wastewater treatment and microorganism synchronous electricity generation, and particularly relates to a wastewater treatment coupling device of an artificial wetland and a microbial fuel cell.
Background
At present, the scale and intensive pig farms in China are continuously increased, the management level of the pig farms is improved, the production cost is reduced, and the economic benefit is improved. However, the production wastewater yield of the pig farm is huge and needs to be treated.
Disclosure of Invention
The invention aims to solve the technical problems and provides a wastewater treatment coupling device for an artificial wetland and a microbial fuel cell, which has a simple structure and is simple and convenient to operate, and the discharged wastewater of livestock and poultry wastewater after treatment can reach GB18596-2001 discharge Standard for pollutants for livestock and poultry Breeding.
In order to solve the technical problem, the invention is realized by the following technical scheme: a coupling device for artificial wetland and microbial fuel cell wastewater treatment comprises a double-chamber cuboid plate box 1, a water distribution box 2, a water inlet pipe 3 and a water inlet peristaltic pump 4, wherein the water distribution box 2 is connected with the water inlet pipe 3, the water inlet pipe 3 is connected with the water inlet peristaltic pump 4, and the water inlet peristaltic pump 4 is connected with the double-chamber cuboid plate box 1; a partition plate 11 is arranged in the middle of the double-chamber rectangular plate box 1, the double-chamber rectangular plate box 1 is divided into an anode chamber 12 and a cathode chamber 13 by the partition plate 11, and the anode chamber 12 and the cathode chamber 13 are communicated at a position 50mm away from the bottom of the double-chamber rectangular plate box 1; the bottom of the double-chamber cuboid plate box 1 is provided with a gravel communicating layer 14, the anode chamber 12 is sequentially provided with an anode descending active carbon packing layer 15, an anode middle layer conductive packing layer 16 and an anode surface packing surface layer 17 from bottom to top, and the cathode chamber 13 is sequentially provided with a cathode ascending active carbon packing layer 18, a cathode ascending gravel packing layer 19 and a cathode top layer conductive material layer 20 from bottom to top; the anode surface filling layer 17 and the cathode top layer conductive material layer 20 are both provided with leads 21, and the leads 21 are connected with the external circuit 6; wetland plants 22 are planted on the anode surface filling surface layer 17 and the cathode top layer conductive material layer 20, and a water outlet and collecting pipe 5 is arranged above the cathode top layer conductive material layer 20.
Preferably, the gravel communication layer 14 is made of a gravel material with a diameter of 6 mm-8 mm and a smooth surface, and the height of the gravel communication layer 14 is 50 mm.
Preferably, the diameter of the activated carbon particles of the anode descending activated carbon filler layer 15 is 3 mm-5 mm, and the activated carbon particles are filled in the layerThe filling density is 0.45g/cm3～0.55g/cm3And the height of the anode descending activated carbon filler layer 15 is 50 mm.
Preferably, the conductive material of the anode middle layer conductive filler layer 16 is a stainless steel wire mesh coated granular activated carbon, the diameter of the steel wire is 0.42mm, the aperture is 1.70mm, the diameter of the activated carbon granules is 3 mm-5 mm, and the packing density is 0.45g/cm3～0.55g/cm3And the height of the anode middle layer conductive filler layer 16 is 100 mm.
Preferably, the anode surface filling surface layer 17 is made of a gravel material with a diameter of 6 mm-8 mm and a smooth surface, and the height of the anode surface filling surface layer 17 is 300 mm.
Preferably, the diameter of the activated carbon particles of the cathode ascending activated carbon filler layer 18 is 3 mm-5 mm, and the filling density is 0.45g/cm3～0.55g/cm3And the height of the cathode ascending activated carbon filler layer 18 is 50 mm.
Preferably, the gravel of the cathode ascending gravel packing layer 19 is made of gravel materials with a diameter of 6 mm-8 mm and a smooth surface, and the height of the cathode ascending gravel packing layer 19 is 400 mm.
Preferably, the conductive material of the cathode top conductive material layer 20 is graphite felt, and the thickness of the cathode top conductive material layer 20 is 50 mm.
Livestock and poultry wastewater continuously enters an anode surface filling surface layer 17 from a water distribution tank 2 through a water inlet peristaltic pump 4 and then vertically descends, the livestock and poultry wastewater sequentially enters an anode middle layer conductive packing layer 16 and an anode descending active carbon packing layer 15 and enters a cathode chamber 13 through a gravel communicating layer 14, macromolecular organic matters which are not decomposed at the anode are adsorbed and decomposed again on a cathode ascending active carbon packing layer 18 and finally ascend to a cathode top layer conductive material layer 20, and the livestock and poultry wastewater finally flows out through an upper end water outlet water collecting pipe 5 of the cathode chamber 13. Meanwhile, the livestock wastewater is subjected to an anaerobic reaction in the anode chamber 12, ammonia nitrogen, nitrate nitrogen, organic matters and the like are decomposed into small molecules by macromolecules, electrogenic bacteria generate electrons while decomposing the organic matters, the electrons are collected by an anode electrode material and are transmitted to the external circuit 6 through the lead 21 to reach the cathode chamber 13, and the surface of the conductive material layer 20 on the top layer of the cathode participates in a reduction reaction.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a wastewater treatment coupling device of an artificial wetland and a microbial fuel cell, which is used for coupling the microbial fuel cell and the artificial wetland, wherein the coupling enables chemical, biological and physical synergistic effects to be realized, and the livestock wastewater treatment purification and the synchronous electricity generation are realized through adsorption, plant absorption, microbial nitrification and denitrification decomposition and microbial electricity generation. The macromolecular organic matters which are not decomposed at the anode are intercepted again on the cathode and the active carbon filler layer, so that the macromolecular organic matters are thoroughly decomposed by the action of facultative anaerobic bacteria colonies.
The coupling device for treating the wastewater by the artificial wetland and the microbial fuel cell provided by the invention has the advantages of strong eutrophication capacity, stable strain activity, small occupied area and convenience and simplicity.
According to the coupling device for wastewater treatment of the constructed wetland and the microbial fuel cell, the bottoms of the positive and negative chambers are directly communicated, the anaerobic circulation area is increased through the bottom communication, the area performance of the aerobic and anoxic anaerobic areas of the device is improved, the oxidation-reduction reaction effect in the device is better promoted, the oxidation-reduction potential difference is improved, the electricity generation effect is improved, and the conductive filler layer in the anode middle layer is made of stainless steel wire mesh to wrap granular activated carbon for collecting electrons and enhancing the electricity generation.
The artificial wetland and microbial fuel cell wastewater treatment coupling device provided by the invention adopts activated carbon with a negative and positive double chamber for filling, so that the contact specific surface area of the livestock wastewater and microbial flora is increased.
Drawings
Fig. 1 is a schematic structural diagram of a constructed wetland and microbial fuel cell wastewater treatment coupling device.
Reference numerals: 1. a double-chamber cuboid plate box; 11. a partition plate; 12. an anode chamber; 13. a cathode chamber; 14. a gravel communicating layer; 15. an anode descending activated carbon filler layer; 16. an anode middle layer conductive filler layer; 17. filling a surface layer on the surface of the anode; 18. a cathode ascending activated carbon filler layer; 19. a cathode ascending gravel packing layer; 20. a cathode top conductive material layer; 21. a wire; 22. wetland plants; 2. a water distribution tank; 3. a water inlet pipe; 4. a water inlet peristaltic pump; 4-wetland plants; 5. a water outlet and water collecting pipe; 6. and an external circuit.
Detailed Description
The embodiments are described in detail below with reference to the accompanying drawings.
Referring to the attached figure 1, the constructed wetland and microbial fuel cell wastewater treatment coupling device comprises a double-chamber cuboid plate box 1, a water distribution box 2, a water inlet pipe 3 and a water inlet peristaltic pump 4, wherein the water distribution box 2 is connected with the water inlet pipe 3, the water inlet pipe 3 is connected with the water inlet peristaltic pump 4, and the water inlet peristaltic pump 4 is connected with the double-chamber cuboid plate box 1; a partition plate 11 is arranged in the middle of the double-chamber rectangular plate box 1, the double-chamber rectangular plate box 1 is divided into an anode chamber 12 and a cathode chamber 13 by the partition plate 11, and the anode chamber 12 and the cathode chamber 13 are communicated at a position 50mm away from the bottom of the double-chamber rectangular plate box 1; the bottom of the double-chamber cuboid plate box 1 is provided with a gravel communicating layer 14, the anode chamber 12 is sequentially provided with an anode descending active carbon packing layer 15, an anode middle layer conductive packing layer 16 and an anode surface packing surface layer 17 from bottom to top, and the cathode chamber 13 is sequentially provided with a cathode ascending active carbon packing layer 18, a cathode ascending gravel packing layer 19 and a cathode top layer conductive material layer 20 from bottom to top; the anode surface filling layer 17 and the cathode top layer conductive material layer 20 are both provided with leads 21, and the leads 21 are connected with an external circuit; wetland plants 22 are planted on the anode surface filling surface layer 17 and the cathode top layer conductive material layer 20, and a water outlet and collecting pipe 5 is arranged above the cathode top layer conductive material layer 20.
Furthermore, the gravel communicating layer 14 is made of gravel materials with diameters of 6 mm-8 mm and smooth surfaces, and the height of the gravel communicating layer 14 is 50 mm.
Further, the diameter of the activated carbon particles of the anode descending activated carbon filler layer 15 is 3 mm-5 mm, and the filling density is 0.45g/cm3～0.55g/cm3And the height of the anode descending activated carbon filler layer 15 is 50 mm.
Further, the conductive material of the conductive filler layer 16 in the anode middle layerThe granular active carbon is wrapped by stainless steel wire mesh material, the diameter of the steel wire is 0.42mm, the aperture is 1.70mm, the diameter of the active carbon granules is 3 mm-5 mm, and the filling density is 0.45g/cm3～0.55g/cm3And the height of the anode middle layer conductive filler layer 16 is 100 mm.
Further, the anode surface filling surface layer 17 is made of a gravel material with a diameter of 6-8 mm and a smooth surface, and the height of the anode surface filling surface layer 17 is 300 mm.
Further, the diameter of the active carbon particles of the cathode ascending active carbon filler layer 18 is 3 mm-5 mm, and the filling density is 0.45g/cm3～0.55g/cm3And the height of the cathode ascending activated carbon filler layer 18 is 50 mm.
Furthermore, the gravel of the cathode ascending gravel packing layer 19 is made of gravel materials with the diameter of 6 mm-8 mm and smooth surfaces, and the height of the cathode ascending gravel packing layer 19 is 400 mm.
Further, the conductive material of the cathode top conductive material layer 20 is graphite felt, and the thickness of the cathode top conductive material layer 20 is 50 mm.
The waste water that the beasts and birds breed factory was got back earlier through holding back of grid, gets rid of the large granule pollutant and the suspended solid in the waste water, and beasts and birds waste water gets into water distribution tank 2 afterwards. Livestock and poultry wastewater continuously enters an anode surface filling surface layer 17 from a water distribution tank 2 through a water inlet peristaltic pump 4 and then vertically descends, the livestock and poultry wastewater sequentially enters an anode middle layer conductive packing layer 16 and an anode descending active carbon packing layer 15 and enters a cathode chamber 13 through a gravel communicating layer 14, macromolecular organic matters which are not decomposed at the anode are adsorbed and decomposed again on a cathode ascending active carbon packing layer 18 and finally ascend to a cathode top layer conductive material layer 20, and the livestock and poultry wastewater finally flows out through an upper end water outlet water collecting pipe 5 of the cathode chamber 13. Meanwhile, the livestock wastewater is subjected to an anaerobic reaction in the anode chamber 12, ammonia nitrogen, nitrate nitrogen, organic matters and the like are decomposed into small molecules by macromolecules, electrogenic bacteria generate electrons while decomposing the organic matters, the electrons are collected by an anode electrode material and are transmitted to the external circuit 6 through the lead 21 to reach the cathode chamber 13, and the surface of the conductive material layer 20 on the top layer of the cathode participates in a reduction reaction.
The above list is only one of the specific embodiments of the present invention. It will be clear that the invention is not limited to the above embodiments, but that many similar modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (6)
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| CN112939196A (en) * | 2021-02-05 | 2021-06-11 | 郑州轻工业大学 | Coke electrode microbial fuel cell constructed wetland system, operation method and application |
| CN115594355B (en) * | 2022-10-31 | 2023-08-29 | 江西科技师范大学 | In-situ pollutant degradation photoelectrocatalysis water purification treatment system and method |
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- 2017-12-20 CN CN201711384102.8A patent/CN108033567B/en active Active
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| JP2003181418A (en) * | 2001-12-14 | 2003-07-02 | Denso Corp | Wastewater treatment plant |
| CN102153234A (en) * | 2011-03-04 | 2011-08-17 | 南昌大学 | Serial drop water composite wetland system for treating non-point pollution |
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