CN107058066B - Double-membrane-cover dynamic anaerobic tank based on complete mixed flow model - Google Patents
Double-membrane-cover dynamic anaerobic tank based on complete mixed flow model Download PDFInfo
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- CN107058066B CN107058066B CN201710035344.XA CN201710035344A CN107058066B CN 107058066 B CN107058066 B CN 107058066B CN 201710035344 A CN201710035344 A CN 201710035344A CN 107058066 B CN107058066 B CN 107058066B
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- 239000012528 membrane Substances 0.000 claims abstract description 94
- 238000000855 fermentation Methods 0.000 claims abstract description 37
- 230000004151 fermentation Effects 0.000 claims abstract description 37
- 238000004873 anchoring Methods 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 238000005260 corrosion Methods 0.000 claims abstract description 7
- 230000007797 corrosion Effects 0.000 claims abstract description 5
- 210000004379 membrane Anatomy 0.000 claims description 68
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 210000002469 basement membrane Anatomy 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000011161 development Methods 0.000 claims description 2
- 230000018109 developmental process Effects 0.000 claims description 2
- 230000008595 infiltration Effects 0.000 claims 2
- 238000001764 infiltration Methods 0.000 claims 2
- 238000005273 aeration Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 244000005700 microbiome Species 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 14
- 238000009434 installation Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 238000010992 reflux Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/20—Material Coatings
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/38—Caps; Covers; Plugs; Pouring means
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
-
- 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
Abstract
A dynamic anaerobic tank with double membrane sealing covers based on a fully-mixed flow model belongs to the technical field of biogas production devices, and solves the technical problem of constant temperature in the anaerobic tank, the double membrane sealing covers are covered above the anaerobic tank and stably arranged in anchoring grooves, and a heat insulation layer is formed between the double membrane sealing covers, so that the temperature in the anaerobic tank is basically maintained within the range of +/-2 ℃, the fermentation of microorganisms is facilitated, and the production efficiency of biogas is improved. The solution is as follows: the aerating device is arranged above the side wall of the biogas fermentation tank, the double-membrane sealing cover is arranged above the opening of the biogas fermentation tank, and the double-membrane sealing cover comprises an inner membrane and an outer membrane; an anchoring groove is arranged around the top of the side wall of the biogas fermentation tank, a bottom membrane is attached to the upper surface of the seepage-resistant corrosion-resistant layer, a cavity is formed between the inner membrane and the bottom membrane, a cavity is formed between the outer membrane and the inner membrane, the outer membrane is provided with an inflation inlet, and the inflation inlet is connected with an inflation device through a pipeline; the water return pipeline is in a door shape and is arranged at the bottom of the side wall of the biogas fermentation tank.
Description
Technical Field
The invention belongs to the technical field of biogas production devices, and particularly relates to a double-membrane-cover dynamic anaerobic tank based on a fully-mixed flow model.
Background
The biogas is a gas generated after microorganisms are fermented in the biogas slurry, and with the wide application of the biogas, which is a clean energy source, at home and abroad, the demand of the biogas is continuously increased, so that higher requirements are put forward on the production efficiency of the biogas. The existing biogas bag is generally covered by a single-layer film, according to research, the daily temperature fluctuation of an anaerobic digestion treatment system is preferably +/-2 ℃, and the biogas slurry environment in the biogas bag is greatly influenced by the external environment and is not beneficial to the fermentation of microorganisms.
Disclosure of Invention
In order to overcome the defects in the prior art and solve the technical problem of constant temperature in an anaerobic tank in the prior art, the invention provides a chute type hard shoulder.
The invention is realized by the following technical scheme.
Two membrane closing cap developments anaerobism ponds based on complete mixed flow model, it includes aerating device, biogas fermentation pond, return water pipeline, basement membrane and two membrane closing caps, its characterized in that: the aerating device is arranged above the side wall of the biogas fermentation tank, the double-membrane sealing cover is arranged above the opening of the biogas fermentation tank, and the double-membrane sealing cover comprises an inner membrane and an outer membrane; the inner side wall of the methane fermentation tank is provided with a slope, an anchoring groove is arranged around the top of the side wall of the methane fermentation tank, the concave surface in the anchoring groove, the inner wall of the methane fermentation tank and the connecting part of the anchoring groove and the inner wall of the methane fermentation tank are coated with an anti-seepage and anti-corrosion layer, and the bottom membrane is attached to the upper surface of the anti-seepage and anti-corrosion layer;
in the anchoring groove: coating a sandstone layer on the upper surface of the bottom membrane part in the anchoring ditch, fixedly installing the edges of the inner membrane and the outer membrane on the upper surface of the sandstone layer through anchoring parts, arranging the outer membrane on the upper surface of the inner membrane, carrying out hot melting and edge sealing on the outer membrane and the inner membrane at the side wall of an opening of the anchoring ditch, and sequentially filling a cement layer and a water seal layer above the anchoring parts in the anchoring ditch; a cavity is formed between the inner membrane and the bottom membrane, a cavity is formed between the outer membrane and the inner membrane, the outer membrane is provided with an inflation inlet, and the inflation inlet is connected with an inflation device through a pipeline;
the methane fermentation tank is characterized in that the water return pipeline is in a door shape, the water return pipeline is arranged at the bottom of the side wall of the methane fermentation tank and comprises a reflux pump, a water return main pipe and water return branch pipes, the reflux pump is arranged at the closed end of the door-shaped water return pipeline, water is pumped to the water return main pipe through the reflux pump, the water return main pipe is provided with the water return branch pipes at equal intervals, and the end parts of the water return branch pipes penetrate through the side wall of the; when the backflow main pipe arranged on one side of the backflow pump is a liquid supply pipeline, the backflow main pipe arranged on the other side of the backflow pump is a liquid return pipe.
Further, the bottom of the biogas fermentation tank is connected with a biogas residue discharge tank through a pipeline.
Further, the arc top distance between the outer membrane and the inner membrane is 20-30 cm.
Furthermore, the extensibility and flexibility of the material of the inner film are higher than those of the material of the outer film, and the material of the outer film has high strength.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the double-membrane sealing cover is covered above the anaerobic tank and stably arranged in the anchoring groove, and the heat-insulating layer is formed between the double-membrane sealing covers, so that the temperature in the anaerobic tank is basically maintained within the range of +/-2 ℃, the fermentation of microorganisms is facilitated, and the production efficiency of biogas is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of the structure of the present invention.
Fig. 2 is a schematic view of a top view structure of the water return pipeline.
Detailed Description
As shown in fig. 1-2, the dynamic anaerobic tank with double membrane sealing covers based on the complete mixed flow model comprises an aerating device 1, a biogas fermentation tank 2, a water return pipeline 3, a basement membrane 5 and double membrane sealing covers, and is characterized in that: the aerating device 1 is arranged above the side wall of the biogas fermentation tank 2, and the double-membrane sealing cover is arranged above the opening of the biogas fermentation tank 2 and comprises an inner membrane 6 and an outer membrane 7; the inner side wall of the biogas fermentation tank 2 is provided with a slope, an anchoring groove 8 is arranged around the top of the side wall of the biogas fermentation tank 2, the concave surface of the anchoring groove 8, the inner wall of the biogas fermentation tank 2 and the connecting part of the anchoring groove 8 and the inner wall of the biogas fermentation tank 2 are coated with an anti-seepage corrosion-resistant layer 9, and the bottom membrane 5 is attached to the upper surface of the anti-seepage corrosion-resistant layer 9;
in the anchoring groove 8: coating a sandstone layer 4 on the upper surface of the bottom membrane 5 part in the anchoring groove 8, fixedly installing the edges of the inner membrane 6 and the outer membrane 7 on the upper surface of the sandstone layer 4 through anchoring pieces 10, arranging the outer membrane 7 on the upper surface of the inner membrane 6, carrying out hot melting and edge sealing on the outer membrane 7 and the inner membrane 6 at the side wall of the opening of the anchoring groove 8, and sequentially filling a cement layer and a water seal layer above the anchoring pieces 10 in the anchoring groove 8; a cavity is formed between the inner membrane 6 and the bottom membrane 5, a cavity is formed between the outer membrane 7 and the inner membrane 6, an inflation inlet is formed in the outer membrane, and the inflation inlet is connected with the inflation device 1 through a pipeline;
the water return pipeline 3 is in a door shape, the water return pipeline 3 is arranged at the bottom of the side wall of the biogas fermentation tank 2, the water return pipeline 3 comprises a return pump 31, a return main pipe 32 and return branch pipes 33, the return pump 31 is arranged at the closed end of the door-shaped water return pipeline 3, water is pumped to the return main pipe 32 through the return pump 31, the return main pipe 32 is equidistantly provided with the return branch pipes 33, and the end parts of the return branch pipes 33 penetrate through the side wall of the biogas fermentation tank 2 and extend into the bottom membrane 5; when the main return pipe 32 disposed on one side of the return pump 31 is a liquid supply pipe, the main return pipe 31 disposed on the other side of the return pump 31 is a liquid return pipe.
Further, the bottom of the biogas fermentation tank 2 is connected with a biogas residue discharge tank 11 through a pipeline.
Further, the arc top distance between the outer membrane 7 and the inner membrane 6 is 20-30 cm.
Further, the extensibility and flexibility of the material of the inner film 6 are higher than those of the material of the outer film 7, and the material of the outer film 7 has high strength.
The specific implementation process is as follows:
firstly, the size of the methane cover is designed and calculated according to the size of the constructed methane tank, and the double-membrane methane cover is manufactured after the methane cover is determined and stored. The preparation method comprises the following steps:
1. cutting the inner membrane and the outer membrane according to the proportion;
2. adjusting and aligning the inner membrane and the outer membrane on a flat field;
3. after the alignment is finished, carrying out hot melting edge sealing on the material;
4. reserving an air transmission hole after sealing;
5. inflating the middle of the double membranes according to the calculated amount;
6. performing final edge sealing treatment after finishing;
7. and detecting and reinforcing all edge sealing seams.
Installation of two-film and two-film methane cover
The installation premise is as follows:
1. the installation of the double-membrane biogas cover is carried out on the premise that the construction is finished in the biogas pool body according to the drawing;
2. when the methane tank is built, a supporting steel frame is embedded at the top of the tank;
3. the biogas cover can be installed only after the previous work of pre-embedded fixing pieces, water inlet and outlet pipe arrangement, seepage prevention and the like is finished.
The installation steps of the double-membrane biogas cover are as follows:
1. cleaning the anchoring ditch without stone particles, sand and the like;
2. transporting the manufactured double-membrane biogas cover to an installation position (requiring a relatively flat site);
3. placing the methane cover on the support steel frame, aligning and adjusting the angle;
4. pressing the methane cover edge into the anchoring groove and penetrating the anchoring screw rod for temporary fixation;
5. pressing the cover by a pressing strip in sequence, locking and fixing the membrane by a gasket nut, and forming an anchoring device by the pressing strip and the nut;
6. after the film locking is finished, burying and sealing the anchoring ditch by using cement, and reserving the height of 50mm on the surface;
7. and (5) after the cement in the anchoring ditch is dried, filling the reserved 50mm depth to the horizontal position by using water so as to perform secondary sealing.
The principle of the double-membrane biogas cover is as follows: the double-membrane air cover is mainly used for preventing the temperature of the air outside the pool from rapidly dropping to influence the temperature in the pool. When the biogas digester is built and starts to operate, if the outside temperature drops, cold air can be blocked by the heat insulation layer between the double films. When cold air gets into the heat preservation, high temperature lasts outward diffusion two strands of air always in the pond and can collide in the heat preservation with cold air can't get into the temperature in the pond of influencing.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (4)
1. Two membrane closing cap developments anaerobism pond based on complete mixed flow model, it includes aerating device (1), biogas fermentation pond (2), return water pipeline (3), basement membrane (5) and two membrane closing caps, its characterized in that: the aeration device (1) is arranged above the side wall of the biogas fermentation tank (2), the double-membrane sealing cover is arranged above the opening of the biogas fermentation tank (2), and the double-membrane sealing cover comprises an inner membrane (6) and an outer membrane (7); the inner side wall of the methane fermentation tank (2) is provided with a slope, an anchoring groove (8) is arranged around the top of the side wall of the methane fermentation tank (2), the concave surface of the anchoring groove (8), the inner wall of the methane fermentation tank (2) and the connecting part of the anchoring groove (8) and the inner wall of the methane fermentation tank (2) are coated with an infiltration-resistant corrosion-resistant layer (9), and the bottom membrane (5) is attached to the upper surface of the infiltration-resistant corrosion-resistant layer (9);
in the anchoring groove (8): coating a sandstone layer (4) on the upper surface of the bottom membrane (5) in the anchoring groove (8), fixedly installing the edges of the inner membrane (6) and the outer membrane (7) on the upper surface of the sandstone layer (4) through an anchoring piece (10), arranging the outer membrane (7) on the upper surface of the inner membrane (6), carrying out hot melting and edge sealing on the outer membrane (7) and the inner membrane (6) at the side wall of the opening of the anchoring groove (8), and sequentially filling a cement layer and a water seal layer above the anchoring piece (10) in the anchoring groove (8); a cavity is formed between the inner membrane (6) and the bottom membrane (5), a cavity is formed between the outer membrane (7) and the inner membrane (6), the outer membrane is provided with an inflation inlet, and the inflation inlet is connected with the inflation device (1) through a pipeline;
the water return pipeline (3) is in a door shape, the water return pipeline (3) is arranged at the bottom of the side wall of the biogas fermentation tank (2), the water return pipeline (3) comprises a return pump (31), a return main pipe (32) and return branch pipes (33), the return pump (31) is arranged at the closed end of the door-shaped water return pipeline (3), water is pumped to the return main pipe (32) through the return pump (31), the return main pipe (32) is equidistantly provided with the return branch pipes (33), and the end parts of the return branch pipes (33) penetrate through the side wall of the biogas fermentation tank (2) and extend into the bottom membrane (5); when the backflow main pipe (32) arranged on one side of the backflow pump (31) is a liquid supply pipeline, the backflow main pipe (31) arranged on the other side of the backflow pump (31) is a liquid return pipe.
2. The fully mixed flow model-based double-membrane-cover dynamic anaerobic tank as claimed in claim 1, wherein: the bottom of the biogas fermentation tank (2) is connected with a biogas residue discharge tank (11) through a pipeline.
3. The fully mixed flow model-based double-membrane-cover dynamic anaerobic tank as claimed in claim 1, wherein: the arc top distance between the outer membrane (7) and the inner membrane (6) is 20-30 cm.
4. The fully mixed flow model-based double-membrane-cover dynamic anaerobic tank as claimed in claim 1, wherein: the extensibility and flexibility of the material of the inner membrane (6) are higher than those of the material of the outer membrane (7), and the material of the outer membrane (7) has high strength.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710035344.XA CN107058066B (en) | 2017-01-18 | 2017-01-18 | Double-membrane-cover dynamic anaerobic tank based on complete mixed flow model |
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| CN201710035344.XA CN107058066B (en) | 2017-01-18 | 2017-01-18 | Double-membrane-cover dynamic anaerobic tank based on complete mixed flow model |
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| CN107058066B true CN107058066B (en) | 2020-04-03 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108165468A (en) * | 2017-11-30 | 2018-06-15 | 德沃（苏州）环境科技有限公司 | Bioreactor based on flexible membrane |
| CN107931299A (en) * | 2017-12-14 | 2018-04-20 | 杭州市环境集团有限公司 | Isolation anchor structure between adjacent junk-heap body |
| CN114524595B (en) * | 2022-02-11 | 2023-06-06 | 惠州市兴牧环保科技股份有限公司 | Ecological fermentation system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204211735U (en) * | 2014-09-24 | 2015-03-18 | 惠州市兴牧环保科技有限公司 | A kind of solar-energy methane pit of water system natural circulation |
| CN105420101A (en) * | 2015-11-10 | 2016-03-23 | 四川蒙特新能源科技有限公司 | Biogas double-film gasmeter system |
| CN205223239U (en) * | 2015-12-15 | 2016-05-11 | 河南省谷庄生态节能循环农业有限公司 | Corrosion resistant biogas fermentation device of high strength |
| CN205603594U (en) * | 2016-03-26 | 2016-09-28 | 广州联敦环保科技有限公司 | Integration type marsh gas gas storage holder |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204211735U (en) * | 2014-09-24 | 2015-03-18 | 惠州市兴牧环保科技有限公司 | A kind of solar-energy methane pit of water system natural circulation |
| CN105420101A (en) * | 2015-11-10 | 2016-03-23 | 四川蒙特新能源科技有限公司 | Biogas double-film gasmeter system |
| CN205223239U (en) * | 2015-12-15 | 2016-05-11 | 河南省谷庄生态节能循环农业有限公司 | Corrosion resistant biogas fermentation device of high strength |
| CN205603594U (en) * | 2016-03-26 | 2016-09-28 | 广州联敦环保科技有限公司 | Integration type marsh gas gas storage holder |
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