Functional biocatalyst for biogas fermentation and method for fermenting using catalyst

A biocatalyst and biogas fermentation technology, which is applied to the multifunctional biocatalyst containing microcrystalline phosphate rock powder and the field of biogas fermentation using the catalyst, can solve the problem of reduced biogas production, low biogas conversion rate, and lack of biogas fermentation raw materials Fully decompose and utilize problems to achieve the effects of easy operation, good effect, deodorization and inhibition of pathogenic microorganisms

Active Publication Date: 2014-04-23
INNER MONGOLIA HUAMENG KECHUANG ENVIRONMENTAL PROTECTION TECH ENG CO LTD
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Problems solved by technology

For example, (1) The biogas production decreases significantly in the cold season, and the gas production of the same amount of biogas raw materials is often less than one-third of th...

Method used

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  • Functional biocatalyst for biogas fermentation and method for fermenting using catalyst
  • Functional biocatalyst for biogas fermentation and method for fermenting using catalyst
  • Functional biocatalyst for biogas fermentation and method for fermenting using catalyst

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Embodiment Construction

[0047] The following examples can enable those skilled in the art to understand the present invention more comprehensively, but do not limit the present invention in any way.

[0048] The present invention utilizes the fermentation method of functional biocatalyst for biogas fermentation to carry out according to the following method:

[0049] The first step is to prepare microcrystalline phosphate rock powder:

[0050] Put the phosphorus mineral containing 96%-98% by mass in the crushing equipment, put the pulverized powder in the grinding equipment, and add 2%-4% of the mass percentage of activator in the grinding equipment to carry out ultrafine Processing, using mechanochemical and high-shear mechanical impact to prepare natural minerals into products with an average particle size of more than 400 mesh, and obtain P 2 o 5 Biogas fermented microcrystalline phosphate rock powder with a content between 15% and 25%, and packaged for later use.

[0051] Microcrystalline zeol...

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Abstract

The invention discloses a functional biocatalyst for biogas fermentation and a method for fermenting using the catalyst. The catalyst comprises 1-3 parts of a microbial composite bacterial agent, 100 parts of hydrolase accelerant and 61-329 parts of mineral nutrient accelerant, wherein the mineral nutrient accelerant is one or more of microcrystalline ground phosphate rock, microcrystalline zeolite powder, microcrystalline calcium carbonate powder, urea, phosphate, bentonite and active carbon. The biogas fermentation method comprises the following steps: performing biogas fermentation by using 350-650 parts of poultry excrement, 100-300 parts of inoculum and 163-430 parts of functional biocatalyst while controlling the moisture content of the poultry excrement at 75-85%; and stirring and mixing for fermentation, wherein the concentration of the whole original feed liquid is 7-12%. In the invention, apart from the supplement of the nutritive elements for biogas fermentation, the effects of deodorization and inhibition of pathogenic microorganisms are realized through the functional complementation effect among the adsorption of an adsorbent, ion exchange, biodegradation and membrane filtration so that the biocatalyst is harmless; and moreover, the preparation technology has the advantages of simple process, easiness in operation, good effect, low investment, no pollution and wide application value.

Description

technical field [0001] The invention belongs to the technical field of biogas fermentation, and relates to a multifunctional biocatalyst containing microcrystalline phosphate rock powder and a method for using the catalyst to carry out biogas fermentation. Background technique [0002] According to a survey conducted by the State Environmental Protection Administration in 2000 on 23 provinces and cities where large-scale livestock and poultry farms are concentrated, in 1995, the total COD discharge of industrial wastewater in the country was 7.6837 million tons, while the waste from livestock and poultry breeding industry The emission converted into COD is 7.286 million tons, which is close to the total COD emission of industrial wastewater in the country. In 1999, the amount of livestock and poultry breeding waste in my country was about 1.9 billion tons, which was 2.4 times that of industrial solid waste. In 2000, the annual production of livestock and poultry manure in C...

Claims

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Application Information

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IPC IPC(8): C12P5/02
CPCY02E50/30
Inventor 云斯宁张仙梅杨玉芬何振全
Owner INNER MONGOLIA HUAMENG KECHUANG ENVIRONMENTAL PROTECTION TECH ENG CO LTD
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