CN101786782B - Cattle manure anaerobic fermentation process - Google Patents
Cattle manure anaerobic fermentation process Download PDFInfo
- Publication number
- CN101786782B CN101786782B CN2010101306317A CN201010130631A CN101786782B CN 101786782 B CN101786782 B CN 101786782B CN 2010101306317 A CN2010101306317 A CN 2010101306317A CN 201010130631 A CN201010130631 A CN 201010130631A CN 101786782 B CN101786782 B CN 101786782B
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- China
- Prior art keywords
- liquid
- methane
- solid
- cow dung
- fermentation
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- Expired - Fee Related
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- 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
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- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
The invention relates to a cattle manure anaerobic fermentation process which belongs to the technical field of anaerobic fermentation; the process comprises the following steps that: (1) a fluid spiral squeezing solid-liquid separator separates the fiber in cattle manure from raw materials which can be quickly fermented, and the separation process parameters are as follows: the mass ratio of cattle manure to water is 2:1, the spiral rotating speed is 68r/min, the separation gap is 1.5mm, and solid and liquid are prepared after solid-liquid separation; and (2) two-phase anaerobic digestion iscarried out to the liquid prepared in step (1), the fermentation temperature is 35DEG C, the inoculum is 30 percent when the methanogenic phase is started, the liquid is acidified for 3 days and enters a methane reactor, the daily feeding and discharge are one seventh of the effective volume of the methane reactor, the liquid discharged by the methane reactor is fermented for 1 day, the total hydraulic retention time is 11 days, and marsh gas is prepared; and the process makes full use of the crude fiber in the cattle manure, reduces the C/N of the fermentation raw materials, and has the advantages of short hydraulic retention time, high equipment utilization rate, water saving, and high methane yield in the marsh gas.
Description
Technical field
The invention belongs to anaerobic fermentation technology, relate generally to just anaerobically fermenting treatment process method of cow dung.
Background technology
At present, utilize anaerobically fermenting to handle the livestock and poultry farm ight soil methods that adopt simple pre-treatment and full mixed fermentation more.Compare with chicken manure with pig manure, crude fiber content is many in the cow dung, and carbon-nitrogen ratio is big, and in the anaeration in normal temperature fermenting process, robust fibre is difficult to be utilized by anaerobion, influences the gas producing efficiency of cattle manure; Simultaneously, simple full mixed fermentation, hydraulic detention time is long, and plant factor is low, has influenced the economical effectiveness of utilizing the cow dung anaerobically fermenting to produce methane.
Summary of the invention
Purpose of the present invention is exactly the problem that exists at above-mentioned prior art, and design provides a kind of cow dung anaerobic ferment process, reaches to make that robust fibre is fully utilized fully in the cow dung, the hydraulic detention time that ferments short, produce the high purpose of methane efficient.
The object of the present invention is achieved like this: a kind of cow dung anaerobic ferment process, 1., utilize stream shape thing screw press equipment for separating liquid from solid that fiber in the cow dung and raw material that can quick fermentation are separated, separation process parameters is: the mass ratio of cow dung and water is 2: 1,68 rev/mins of revolutions speed of screw, 1.5 millimeters of Separations; Obtain solid substance and liquid after the solid-liquid separation respectively: wherein become density behind solid substance drying, the briquetting and reach 1.2 gram per centimeters
3Fuel brick, for the biogas engineering heat tracing provides fuel; 2., utilize that the above-mentioned TS value that obtains after separating in 1. is 6%, C/N carries out diphasic anaerobic less than 20 liquid and ferments, 35 ℃ of leavening temperatures, when product methane starts mutually, inoculum size is 30%, the feed liquid acidifying entered after 3 days produces the methane reaction device, every day, inlet amount was for producing 1/7 of methane reaction device useful volume, to from producing the feed liquid secondary fermentation 1 day that the methane reaction device discharges, make and to produce the methane composition in the feed liquid and fully ferment, total hrt 11 days, get methane biogas, finish the cow dung anaerobic fermentation process.
This technology can make full use of the organic waste in the cow dung, when biogas engineering heat tracing fuel is provided, reduced the C/N of fermentation raw material again, adopt the diphasic anaerobic zymotechnique, shorten hydraulic detention time, improved plant factor, water saving, improve methane production in the biogas, had the application prospect of highly significant.
Description of drawings
Accompanying drawing is a kind of cow dung anaerobic ferment process schematic flow sheet.
Embodiment
Give an actual example below and describe the present invention.A kind of cow dung anaerobic ferment process, 1., utilize stream shape thing screw press equipment for separating liquid from solid that fiber in the cow dung and raw material that can quick fermentation are separated, separation process parameters is: the mass ratio of cow dung and water is 2: 1,68 rev/mins of revolutions speed of screw, 1.5 millimeters of Separations; Obtain solid substance and liquid after the solid-liquid separation respectively: wherein become density behind solid substance drying, the briquetting and reach 1.2 gram per centimeters
3Fuel brick, for the biogas engineering heat tracing provides fuel; 2., utilize that the above-mentioned TS value that obtains after separating in 1. is 6%, C/N carries out diphasic anaerobic less than 20 liquid and ferments, 35 ℃ of leavening temperatures, when product methane starts mutually, inoculum size is 30%, the feed liquid acidifying entered after 3 days produces the methane reaction device, every day, inlet amount was for producing 1/7 of methane reaction device useful volume, to from producing the feed liquid secondary fermentation 1 day that the methane reaction device discharges, make and to produce the methane composition in the feed liquid and fully ferment, total hrt 11 days, get methane biogas, finish the cow dung anaerobic fermentation process.
In this technology, the solid substance that obtains after the solid-liquid separation partly total solids level TS is not less than 40%, and behind the cow dung anaerobically fermenting, the biogas volume yield rate reaches 1.3m
3/ (m
3D), the methane yield reaches 70% in the biogas.
Claims (1)
1. cow dung anaerobic ferment process, 1., utilize stream shape thing screw press equipment for separating liquid from solid that fiber in the cow dung and raw material that can quick fermentation are separated it is characterized in that:, separation process parameters is: the mass ratio of cow dung and water is 2: 1,68 rev/mins of revolutions speed of screw, 1.5 millimeters of Separations; Obtain solid substance and liquid after the solid-liquid separation respectively: wherein become density behind solid substance drying, the briquetting and reach 1.2 gram per centimeters
3Fuel brick, for the biogas engineering heat tracing provides fuel; 2., utilize that the above-mentioned TS value that obtains after separating in 1. is 6%, C/N carries out diphasic anaerobic less than 20 liquid and ferments, 35 ℃ of leavening temperatures, when product methane starts mutually, inoculum size is 30%, the feed liquid acidifying entered after 3 days produces the methane reaction device, every day, inlet amount was for producing 1/7 of methane reaction device useful volume, to from producing the feed liquid secondary fermentation 1 day that the methane reaction device discharges, make and to produce the methane composition in the feed liquid and fully ferment, total hrt 11 days, get methane biogas, finish the cow dung anaerobic fermentation process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101306317A CN101786782B (en) | 2010-03-24 | 2010-03-24 | Cattle manure anaerobic fermentation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101306317A CN101786782B (en) | 2010-03-24 | 2010-03-24 | Cattle manure anaerobic fermentation process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101786782A CN101786782A (en) | 2010-07-28 |
| CN101786782B true CN101786782B (en) | 2011-05-18 |
Family
ID=42530183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101306317A Expired - Fee Related CN101786782B (en) | 2010-03-24 | 2010-03-24 | Cattle manure anaerobic fermentation process |
Country Status (1)
| Country | Link |
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| CN (1) | CN101786782B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973684B (en) * | 2010-11-03 | 2012-10-31 | 魏世锋 | Separation and anaerobic fermentation technology after cow dung acidification |
| CN102786197A (en) * | 2012-08-15 | 2012-11-21 | 东北农业大学 | Cow dung and pig manure mixed anaerobic fermentation method |
| CN104512985A (en) * | 2014-12-13 | 2015-04-15 | 佛山市高明区合朝农业发展有限公司 | Piggery wastewater anaerobic digestion method for production of biogas |
| CN104846019A (en) * | 2015-03-25 | 2015-08-19 | 东北农业大学 | Gas making method by mixing and fermenting cow dung separating medium and kitchen garbage |
| CN108484232A (en) * | 2018-05-30 | 2018-09-04 | 甘肃前进牧业科技有限责任公司 | A kind of the treatment for cow manure system and processing method of dairy cow farm |
| CN114368889A (en) * | 2020-10-15 | 2022-04-19 | 徐州生物工程职业技术学院 | Biogas fermentation method using cow dung as raw material |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060279A (en) * | 1990-09-29 | 1992-04-15 | 上海东海水产科技服务部 | Pig farm wastewater treatment and utilize technology |
| CN1054268C (en) * | 1995-12-09 | 2000-07-12 | 杨兴容 | Food conversion method by cow dung anaerobic fermentation |
| US6464875B1 (en) * | 1999-04-23 | 2002-10-15 | Gold Kist, Inc. | Food, animal, vegetable and food preparation byproduct treatment apparatus and process |
| KR101003482B1 (en) * | 2008-09-04 | 2010-12-28 | 이정규 | Disposal method of high concentration organic matter waste water |
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2010
- 2010-03-24 CN CN2010101306317A patent/CN101786782B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101786782A (en) | 2010-07-28 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20130324 |