CN101786782B - Cattle manure anaerobic fermentation process - Google Patents
Cattle manure anaerobic fermentation process Download PDFInfo
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- 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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- liquid
- methane
- solid
- fermentation
- cow dung
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- 238000000855 fermentation Methods 0.000 title claims abstract description 30
- 210000003608 fece Anatomy 0.000 title claims abstract description 29
- 230000004151 fermentation Effects 0.000 title claims abstract description 21
- 239000010871 livestock manure Substances 0.000 title abstract description 11
- 241000283690 Bos taurus Species 0.000 title abstract 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000000926 separation method Methods 0.000 claims abstract description 17
- 239000007787 solid Substances 0.000 claims abstract description 10
- 239000000835 fiber Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002054 inoculum Substances 0.000 claims abstract description 3
- 239000000446 fuel Substances 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 2
- 239000011449 brick Substances 0.000 claims 1
- 230000003203 everyday effect Effects 0.000 claims 1
- 230000014759 maintenance of location Effects 0.000 abstract description 7
- 230000000696 methanogenic effect Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 2
- 230000029087 digestion Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 241000287828 Gallus gallus Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- 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
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
技术领域technical field
本发明属于厌氧发酵技术，主要涉及牛粪便厌氧发酵处理工艺方法。The invention belongs to anaerobic fermentation technology, and mainly relates to an anaerobic fermentation treatment process of cow manure.
背景技术Background technique
目前，利用厌氧发酵处理畜禽养殖场粪便多采用简单的预处理和全混合发酵的方法。与猪粪和鸡粪相比，牛粪中粗纤维含量多，碳氮比大，在中温厌氧发酵过程中，粗纤维难于被厌氧微生物利用，影响牛粪发酵的产气效率；同时，简单的全混合发酵，水力停留时间长，设备利用率低，影响了利用牛粪厌氧发酵生产甲烷的经济效果。At present, simple pretreatment and full mixed fermentation methods are mostly used in the treatment of manure from livestock and poultry farms by anaerobic fermentation. Compared with pig manure and chicken manure, cow manure has more crude fiber content and higher carbon-to-nitrogen ratio. During the mesophilic anaerobic fermentation process, the crude fiber is difficult to be utilized by anaerobic microorganisms, which affects the gas production efficiency of cow manure fermentation; at the same time, Simple full mixed fermentation, long hydraulic retention time and low utilization rate of equipment affect the economic effect of anaerobic fermentation of cow dung to produce methane.
发明内容Contents of the invention
本发明的目的就是针对上述已有技术存在的问题，设计提供一种牛粪厌氧发酵工艺，达到使牛粪中粗纤维得到充分的综合利用、发酵水力停留时间短、产甲烷效率高的目的。The purpose of the present invention is to solve the problems existing in the above-mentioned prior art, and to design and provide a cow dung anaerobic fermentation process, so as to achieve the purpose of fully utilizing the crude fiber in cow dung, shortening the hydraulic retention time of fermentation and high methane production efficiency .
本发明的目的是这样实现的：一种牛粪厌氧发酵工艺，①、利用流状物螺旋压榨固液分离装置将牛粪中的纤维与可以快速发酵的原料分离开，分离工艺参数为：牛粪与水的质量比为2∶1，螺旋转速68转/分，分离间隙1.5毫米；固液分离后分别得到固形物和液体：其中固形物经干燥、压块后成为密度达到1.2克/厘米3的燃料块，为沼气工程加热保温提供燃料；②、利用上述①中分离后得到的TS值为6％、C/N小于20的液体进行两相厌氧发酵，发酵温度35℃，产甲烷相启动时，接种量为30％，料液酸化3天后进入产甲烷反应装置，每天进料量为产甲烷反应装置有效容积的1/7，对从产甲烷反应装置排出的料液后发酵1天，使料液中可产甲烷成份充分发酵，总水力停留时间11天，得甲烷沼气，完成牛粪厌氧发酵过程。The object of the present invention is achieved like this: a kind of cow dung anaerobic fermentation process, 1., utilize the solid-liquid separation device of streamline screw press to separate the fiber in the cow dung and the raw material that can ferment quickly, and separation process parameter is: The mass ratio of cow dung to water is 2:1, the screw speed is 68 rpm, and the separation gap is 1.5mm; after solid-liquid separation, solids and liquids are obtained respectively: the solids are dried and briquetted to become a density of 1.2 g/min. The fuel block of cm 3 provides fuel for the heating and heat preservation of the biogas project; ②, using the liquid with a TS value of 6% and a C/N less than 20 obtained after the separation in the above ① for two-phase anaerobic fermentation, the fermentation temperature is 35 ° C, and the product When the methane phase is started, the inoculation amount is 30%, and the feed liquid is acidified for 3 days and then enters the methanogenic reaction device. The daily feeding amount is 1/7 of the effective volume of the methanogenic reaction device. 1 day to fully ferment the methane-producing components in the feed liquid, and the total hydraulic retention time is 11 days to obtain methane biogas and complete the anaerobic fermentation process of cow dung.
该工艺可以充分利用牛粪中的有机废弃物，在提供沼气工程加热保温燃料的同时，又降低了发酵原料的C/N，采用两相厌氧发酵工艺，缩短了水力停留时间，提高设备利用率，节约用水，提高了沼气中甲烷产率，具有非常显著的应用前景。This process can make full use of the organic waste in cow dung. While providing heating and heat preservation fuel for biogas projects, it also reduces the C/N of fermentation raw materials. The two-phase anaerobic fermentation process shortens the hydraulic retention time and improves equipment utilization. efficiency, save water, and increase the methane yield in biogas, which has a very significant application prospect.
附图说明Description of drawings
附图是一种牛粪厌氧发酵工艺流程示意图。The accompanying drawing is a schematic flow chart of anaerobic fermentation of cow dung.
具体实施方式Detailed ways
下面举实例对本发明进行详细描述。一种牛粪厌氧发酵工艺，①、利用流状物螺旋压榨固液分离装置将牛粪中的纤维与可以快速发酵的原料分离开，分离工艺参数为：牛粪与水的质量比为2∶1，螺旋转速68转/分，分离间隙1.5毫米；固液分离后分别得到固形物和液体：其中固形物经干燥、压块后成为密度达到1.2克/厘米3的燃料块，为沼气工程加热保温提供燃料；②、利用上述①中分离后得到的TS值为6％、C/N小于20的液体进行两相厌氧发酵，发酵温度35℃，产甲烷相启动时，接种量为30％，料液酸化3天后进入产甲烷反应装置，每天进料量为产甲烷反应装置有效容积的1/7，对从产甲烷反应装置排出的料液后发酵1天，使料液中可产甲烷成份充分发酵，总水力停留时间11天，得甲烷沼气，完成牛粪厌氧发酵过程。The present invention is described in detail with examples below. An anaerobic fermentation process for cow dung, ①, using a fluid screw press solid-liquid separation device to separate the fiber in the cow dung from the raw materials that can be fermented quickly, the separation process parameters are: the mass ratio of cow dung to water is 2 : 1, the spiral speed is 68 rev/min, and the separation gap is 1.5 mm; after the solid-liquid separation, solids and liquids are obtained respectively: the solids become fuel blocks with a density of 1.2 g/ cm3 after drying and briquetting, which is a biogas project Heat and keep warm to provide fuel; ②, use the TS value obtained after separation in the above ① to be 6%, and the liquid with C/N less than 20 to carry out two-phase anaerobic fermentation, the fermentation temperature is 35 ° C, and when the methanogenic phase is started, the inoculum size is 30 %, the feed liquid enters into the methane reaction device after being acidified for 3 days, and the daily feeding amount is 1/7 of the effective volume of the methane reaction device. The methane component is fully fermented, the total hydraulic retention time is 11 days, methane biogas is obtained, and the anaerobic fermentation process of cow dung is completed.
本工艺中，固液分离后得到的固形物部份总固体含量TS不小于40％，牛粪厌氧发酵后，沼气容积产气率达到1.3m3/(m3·d)，沼气中甲烷得率达到70％。In this process, the total solid content TS of the solid part obtained after solid-liquid separation is not less than 40%. After anaerobic fermentation of cow dung, the volumetric gas production rate of biogas reaches 1.3m 3 /(m 3 ·d), and methane in biogas Yield reaches 70%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101306317A CN101786782B (en) | 2010-03-24 | 2010-03-24 | Cattle manure anaerobic fermentation process |
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|---|---|---|---|
| CN2010101306317A CN101786782B (en) | 2010-03-24 | 2010-03-24 | Cattle manure anaerobic fermentation process |
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| Publication Number | Publication Date |
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| CN101786782A CN101786782A (en) | 2010-07-28 |
| CN101786782B true CN101786782B (en) | 2011-05-18 |
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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 |
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| 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 | Treatment method of high concentration organic wastewater |
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