CN201296753Y - Horizontal-flow biogas tank - Google Patents
Horizontal-flow biogas tank Download PDFInfo
- Publication number
- CN201296753Y CN201296753Y CNU2008200518449U CN200820051844U CN201296753Y CN 201296753 Y CN201296753 Y CN 201296753Y CN U2008200518449 U CNU2008200518449 U CN U2008200518449U CN 200820051844 U CN200820051844 U CN 200820051844U CN 201296753 Y CN201296753 Y CN 201296753Y
- Authority
- CN
- China
- Prior art keywords
- methane
- generating pit
- water
- biogas
- water inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000004744 fabric Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 8
- 239000004567 concrete Substances 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 8
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 241000209094 Oryza Species 0.000 description 7
- 235000007164 Oryza sativa Nutrition 0.000 description 7
- 235000009566 rice Nutrition 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000855 fermentation Methods 0.000 description 4
- 230000004151 fermentation Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- 241000735552 Erythroxylum Species 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 235000008957 cocaer Nutrition 0.000 description 2
- ZPUCINDJVBIVPJ-LJISPDSOSA-N cocaine Chemical compound O([C@H]1C[C@@H]2CC[C@@H](N2C)[C@H]1C(=O)OC)C(=O)C1=CC=CC=C1 ZPUCINDJVBIVPJ-LJISPDSOSA-N 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
- C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
- C12M27/18—Flow directing inserts
- C12M27/20—Baffles; Ribs; Ribbons; Auger vanes
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Genetics & Genomics (AREA)
- Biotechnology (AREA)
- Biomedical Technology (AREA)
- Microbiology (AREA)
- Sustainable Development (AREA)
- Molecular Biology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
本实用新型公开了一种平流布料沼气池，旨在提供一种结构简单、易于建设、产气效果较好的平流布料沼气池。它包括进水系统、沼气池主体和出水系统组成。进水系统包括进水口和进水管，沼气池主体是闭合长方体形的罐体，为了增加布水流长度，设置了导流墙，在沼气池出口前面0.5米处设置一个稳流墙，沼气池上盖为密封的混凝土平板，根据需要可以设置一个人孔，沼气池底板为两层混凝土结构，坡度为5％。出水系统包括出水口、出水间和水压间。本实用新型克服了现有的沼气池对开挖土坑形状的限制和地面质地的限制，方便建设。
The utility model discloses an advection distribution biogas pond, aiming at providing an advection distribution biogas pond with simple structure, easy construction and good gas production effect. It consists of water inlet system, digester body and water outlet system. The water inlet system includes a water inlet and a water inlet pipe. The main body of the biogas digester is a closed cuboid tank. In order to increase the length of the water distribution, a diversion wall is set up. A steady flow wall is set 0.5 meters in front of the biogas digester outlet. As a sealed concrete slab, a manhole can be set up as needed. The bottom plate of the biogas tank is a two-layer concrete structure with a slope of 5%. The water outlet system includes a water outlet, a water outlet room and a water pressure room. The utility model overcomes the limitation of the existing methane pool on the shape of the excavated earth pit and the limitation of the ground texture, and is convenient for construction.
Description
Technical field
The present invention relates to the device that a kind of organic waste water anaerobically fermenting prepares biogas, particularly a kind of advection cloth methane-generating pit.
Background technology
In China rural area, be the methane-generating pit of purpose to produce bioenergy at present, be called the residents methane-generating pit, this class methane-generating pit generally uses maximum 6m that has
3, 8m
3And 10m
3Three kinds of forms, simple in structure being suitable for.The GB/T4750-1984 " rural area family expenses hydraulic type biomass pool standard collective drawings " that China Standard Press in 1984 has published State Bureau of Standardization's issue has proposed the structure of methane-generating pit, be shaped as circle or sphere, be provided with opening for feed, discharge port, sweathouse, gas tank, removable cover, airway, discharge room dual-purpose ager, therefore be referred to as hydraulic type biomass pool.China Standard Press in 2002 have published middle proposition of GB/T4750-2002 " domestic methane tank standard collective drawings " " meander cloth methane-generating pit " of national quality supervision and inspection quarantine office issue, be characterized in tilting to discharge port by opening for feed at the bottom of the pond, be provided with drapery panel in the bottom surface, pond, make fermentation raw material curved mobile, increase diffusingsurface, prolonged the running of fermentation raw material.The Qiu Ling of Xibei Univ. of Agricultural ﹠ Forest Science ﹠ Technology of scientific and technical literature press publication in 2007 has narrated " revolving-flow methane-generating pit " in " garden biogas High-efficient Production and utilization " book, be characterized in, the circular arc type flow deflector that radius-of-curvature of construction is 5D/8 on pond, the end cuts off input and output material, make the pond raw material under the guide functions of flow deflector, must could arrive the bottom of circulation tube and dreg-drawing pipe along the flow deflector turn, thereby the flow path and the residence time of pit entry fermentation raw material have been prolonged, and the Qiu Ling of Xibei Univ. of Agricultural ﹠ Forest Science ﹠ Technology has also proposed Chinese patent ZL97243731.2 " revolving-flow automated cycle methane-generating pit ", and the revolving-flow methane-generating pit has been carried out technical description.
These methane-generating pits widespread use are made the methane-generating pit of different sizes, but following shortcoming is arranged in manufacture process: 1. owing to circular, be inconvenient to build, thus the biogas mould has appearred, and biogas die cost height, size is fixing, fixed in shape, and investment is greatly.2. the excavation layer of ground soil degree of depth is big, need dig dell more than two meters at underground, and this can not construct under the situation that the very shallow marshy land of ground water table and construction quality are sandy soil at all, if run into rainy season and also be to be difficult to build rainy day.3. present methane-generating pit type is built at underground, the round pool of the methane-generating pit form fit that needs excavation and built, different edges need be filled up if excavation out-of-shape, dell are with width outward, is that one side is done mould traditionally, it is that boundary is carried out concrete casting that another side is to use the soil profile that excavates, if excavate irregular words, then waste concrete in a large number, improve the methane-generating pit cost, if mould is done on the two sides, then need to excavate the just convenient building of very big heatable adobe sleeping platform.
Summary of the invention
The purpose of this utility model is to provide a kind of and uses and build simply, is shaped as rectangular parallelepiped, the advection cloth methane-generating pit that biogas fermentation efficient is higher.
The purpose of this utility model is by providing a kind of methane-generating pit with following structure to realize.
Advection cloth methane-generating pit of the present utility model comprises with the lower section to be formed:
Water inlet system, methane-generating pit main body and outlet system are formed.
Water inlet system comprises water-in and water inlet pipe; Water-in is the inlet for the treatment of water, works to collect and compile treating water; Water inlet pipe is the pipeline that treating water enters methane-generating pit, and the low side of water inlet pipe and methane-generating pit links, and forms the beginning of methane-generating pit water distribution.
The methane-generating pit main body is the tank body of closed cuboid, in order to increase cloth current length, be provided with training wall, distance between the training wall is not less than the width of methane-generating pit, the training wall openings of sizes is approximately 1/3 of methane-generating pit width, training wall is staggered, thereby has guaranteed that advection cloth and internal flow are unimpeded.At methane-generating pit outlet 0.5 meter, front a current stabilization wall is set, to guarantee having longer time and effective anaerobic sludge to rest in the methane-generating pit.The methane-generating pit loam cake is the concrete flat slab of sealing, and the centre plugs a metal biogas pipe, and this metal tube has constituted the initial joint of biogas.The methane-generating pit base plate is two-layer concrete structure, and the gradient is 5%, flows to outlet to guarantee mud.The loam cake at methane-generating pit top can be provided with each manhole of 1 meter of length and width as required, to guarantee personnel's discrepancy.Do each manhole plate of 1.4 meters of length and width on manhole, it respectively is the rubber seal of 1.3 meters length and width that manhole plate uses the gluing company of the 502# general-purpose one circle length of side apart from 0.1 meter, edge, with the sealing property of underwriter's port lid.
Outlet system comprises: between water outlet, water outlet and water pressure house; Water outlet is a rectangle mouth of a river in the end setting of methane-generating pit, it is the outlet for the treatment of water, central authorities at the terminal wide wall of methane-generating pit, a rectangle outlet below, export wide is 1 meter, the pressure that coca designs according to methane-generating pit and deciding, generally speaking, there is distance more than at least 1 meter on the top of water outlet apart from the methane-generating pit top cover, and this has constituted the air chamber of this advection cloth methane-generating pit, and guarantees the stable of biogas air pressure.Be to build outside water outlet between water outlet, length and width respectively are a rectangular parallelepiped pipeline of 1 meter, and height will be higher than water outlet; Water pressure house is the usefulness for the adjusting of aerogenesis hydraulic pressure outside between water outlet, and size is 1/3 of this advection cloth gas chamber of marsh gas tank, is traditionally arranged to be length and width and is 1.5 times of methane-generating pit width, and the degree of depth is about 1 meter.
The utility model has the advantages that:
1. simple in structure, can reducing the construction costs; 2. do not need the special building technology, general construction team can build; 3. can solve ground water table high and marshy land or the detrimentally affect of sand ground to building.
Description of drawings
The overall construction drawing (see figure 1) that Fig. 1 implements for the utility model methane-generating pit;
Fig. 2 is the vertical view (Fig. 2) of the utility model methane-generating pit;
Fig. 3 is the side-view (Fig. 3) of the utility model methane-generating pit.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
The utility model belongs to ecological energy type biogas utilization pattern, and natural pond liquid after the processing and natural pond slag can be used for fertilizer or breed fish.Building materials varies in size according to methane-generating pit, adopts different concrete.According to construction experiences, when the methane-generating pit volume is below 30 cubic metres the time, material of construction adopts plain concrete, and thickness is 150mmm; When methane-generating pit volume during at the 30-50 cubic meter, material of construction adopts the plain concrete of 200mm thickness, when volume be 50 or more during cubic metre volume employing thickness be the Reinforced Concrete Materials of 200mm.Construction finishes needs four plain ashes and the floating sealing of cement mortar in the after-bay, re-uses water-proof material and seals.
The utility model methane-generating pit volume calculation method, establishing methane-generating pit length is L (rice), and width is W (rice), and methane-generating pit central authorities highly are H (rice), and then the methane-generating pit volume is V (cubic meter)=L * W * H.
The utility model methane-generating pit size is generally W=1-4 rice, L=2-10 rice, H=1.5-3 rice.Application is that organic sewage emission treatment such as peasant household, small-sized plant, small food source mill produce the biogas use.
Water-in is a solid shape, is a rectangular tank, and the inner length and width of tank respectively are about 1 meter, and the degree of depth is unfixing, is generally the 0.4-0.6 rice degree of depth.It under the water-in water inlet pipe, it is a cement pipe that internal diameter is 0.3m, connect water-in and methane-generating pit bottom, water inlet pipe is installed in the methane-generating pit bottom, far away as far as possible apart from first training wall opening, that is to say that the feed-water end of water inlet pipe is in a side of methane-generating pit, be a end, can prolong current length like this or increase hydraulic detention time near first training wall sealing.The water-in surface is an opening, and all the other all seal, and the junction sealing of water inlet pipe and water-in and methane-generating pit will be got well, and does not leak.The distance of water-in and methane-generating pit is indefinite, decides according to water inlet pipe length, and general the construction uses the high angle of water inlet pipe and biogas pool wall to be 30-40.If the methane-generating pit height is H, the distance of the initiating terminal of water-in and biogas pool wall is 0.6H so, and the length of water inlet cement pipe approximately also is the H height, because also have the height of water-in to also have about 0.5 meter, guarantee that so the high angle of water inlet pipe and biogas pool wall is 30-40 °.Water inlet pipe is arranged on the centre of water-in.Water-in uses brick mix structure or plain concrete structure building all can because hydraulic pressure bears not quite.
The methane-generating pit main body is the cement pit of a rectangular build, it is the tank body of the cuboid of closure, in order to increase cloth current length, be provided with training wall, the distance between the training wall is not less than the width of methane-generating pit, the training wall openings of sizes is approximately 1/3 of methane-generating pit width, the training wall interleaved openings is arranged, thereby has guaranteed that advection cloth and internal flow are unimpeded, and training wall quantity is indefinite, decide according to the water quality situation, if the good training wall quantity of water quality solubility is the more the better; If handle the high excrement dirts of SS content such as ight soil, training wall quantity benefit is few, in order to avoid result in blockage and precipitate, can not use training wall in this case.The training wall design height is generally 2/3 of methane-generating pit height, is higher than the water outlet height.At methane-generating pit outlet 0.5 meter, front a current stabilization wall is set, to guarantee having longer time and effective anaerobic sludge to rest in the methane-generating pit.Current stabilization wall height is 0.5 meter, and length is 2 times of 1/3-water outlet width of methane-generating pit width.The methane-generating pit loam cake is the concrete flat slab of sealing, and the centre plugs a metal biogas pipe, and this metal tube has constituted the initial joint of biogas.The methane-generating pit base plate is two-layer concrete structure, and the gradient is 5%, flows to outlet to guarantee mud.The loam cake at methane-generating pit top can be provided with each manhole of 1 meter of length and width as required, to guarantee personnel's discrepancy.Do each manhole plate of 1.4 meters of length and width on manhole, manhole plate uses the gluing company one of 502# general-purpose to enclose the rubber seal of 1.3 meters length and width apart from 0.1 meter, edge, with the sealing property of underwriter's port lid.
Water outlet is a rectangle mouth of a river in the end setting of methane-generating pit, be positioned at methane-generating pit rear wall central authorities, being the outlet for the treatment of water, below the central authorities of methane-generating pit rear wall end, is a rectangle outlet, exporting wide is 1 meter, coca is decided according to the pressure of methane-generating pit design, and generally speaking, there is distance more than at least 1 meter on the top of water outlet apart from the methane-generating pit top cover, this has constituted the air chamber of advection cloth methane-generating pit of the present utility model, and guarantees the stable of biogas air pressure.Be to build outside water outlet between water outlet, length and width respectively are a rectangular parallelepiped pipeline of 1 meter, and height will be higher than water outlet; Water pressure house is the usefulness for the adjusting of aerogenesis hydraulic pressure outside between water outlet, and size is 1/3 of this advection cloth gas chamber of marsh gas tank, is traditionally arranged to be length and width and is 1.5 times of methane-generating pit width, and the degree of depth is about 1 meter.The water pressure house loam cake need use safety guard, in order to avoid artificial danger is arranged, general safety guard is the cement cover board that there is 1 meter square hole a centre, and square hole is to discharge natural pond slag and natural pond liquid.Natural pond slag and natural pond liquid can be used as fertilizer and use.
Claims (1)
1. flat flow cloth methane-generating pit, it is the sealing pond of a cuboid, by two rectangle sides, front water inlet end face and the water outlet end face in back, a bottom surface and a capping are formed, it is characterized in that: there are a manhole and port lid in capping central authorities, size is generally 1m, at the bottom of the pond and pool wall not or the flow deflector that has staggered opening to arrange, flow deflector is vertical with the methane-generating pit major axis, flow deflector length is approximately about 2/3 of methane-generating pit width, the flow deflector spacing approximately and the methane-generating pit width be equal to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200518449U CN201296753Y (en) | 2008-08-06 | 2008-08-06 | Horizontal-flow biogas tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200518449U CN201296753Y (en) | 2008-08-06 | 2008-08-06 | Horizontal-flow biogas tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201296753Y true CN201296753Y (en) | 2009-08-26 |
Family
ID=41042727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200518449U Expired - Fee Related CN201296753Y (en) | 2008-08-06 | 2008-08-06 | Horizontal-flow biogas tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201296753Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099242A (en) * | 2013-04-08 | 2014-10-15 | 罗利民 | Trapezoid flow production of biogas |
| CN105062870A (en) * | 2015-08-07 | 2015-11-18 | 无锡市悦丰化工有限公司 | Rural biogas tank |
| CN105925466A (en) * | 2016-05-23 | 2016-09-07 | 宾川佳泓养殖专业合作社 | Household underground biogas reaction pool |
-
2008
- 2008-08-06 CN CNU2008200518449U patent/CN201296753Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099242A (en) * | 2013-04-08 | 2014-10-15 | 罗利民 | Trapezoid flow production of biogas |
| CN105062870A (en) * | 2015-08-07 | 2015-11-18 | 无锡市悦丰化工有限公司 | Rural biogas tank |
| CN105925466A (en) * | 2016-05-23 | 2016-09-07 | 宾川佳泓养殖专业合作社 | Household underground biogas reaction pool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104649530B (en) | A kind of aquaculture processes the method that excrement is dirty | |
| CN204714671U (en) | The device of a kind of aquaculture process excrement dirt | |
| CN201296752Y (en) | Turbulent-flow biogas tank | |
| CN201296753Y (en) | Horizontal-flow biogas tank | |
| CN201250233Y (en) | Tunnel biogas pool with water return on the top | |
| CN104710092A (en) | Plastic steel biogas septic tank | |
| CN101263797B (en) | Fresh water culturing farm tube valve ecological irrigating and discharging system | |
| CN103923822A (en) | Invisible multistage methane tank capable of producing methane evenly | |
| CN201785384U (en) | Deflection tunnel type methane tank | |
| CN101974410B (en) | Five-stage anaerobic methane reactor | |
| CN206902004U (en) | A kind of glass toughening manure pit of antiseep | |
| CN204529451U (en) | Biogas septic tank | |
| CN203065478U (en) | Novel efficient flat barrel-shaped combined biogas generating pit | |
| CN203128556U (en) | Novel tunnel-shaped high-efficiency combined marsh gas tank | |
| CN202465465U (en) | Three-grid glass fiber reinforced plastic septic tank | |
| CN206751807U (en) | A kind of firedamp gas equipment for Karst Rocky Desertification Region | |
| CN202347008U (en) | Sealless segmented uncovering type straw methane pool | |
| CN106698659A (en) | Expressway service area sewage comprehensive treatment device | |
| CN202766529U (en) | Biogas digester feed and human hole device | |
| CN205188091U (en) | Large capacity marsh gas night -soil bucket | |
| CN208345856U (en) | A kind of river regulation purification device | |
| CN106047671A (en) | Integrated biogas production device with circulating heating function | |
| CN115784450B (en) | Corridor type ladder constructed wetland suitable for sewage dispersion treatment of river-facing villages | |
| CN102786193A (en) | Excrement innocent treatment utilizing system | |
| CN201280560Y (en) | Methane generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20100806 |