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Method of utilizing rumen microbes to increase recycling rate of dry anaerobic fermentation organic solid waste

A technology of dry anaerobic fermentation and rumen microorganisms, which is applied in the integrated process field of dry anaerobic fermentation, can solve the problems of low efficiency and slow start of dry anaerobic fermentation, improve resource utilization efficiency, and increase gas production Efficiency, the effect of optimizing system parameters

Inactive Publication Date: 2016-07-20
DALIAN UNIV OF TECH
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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of low dry anaerobic fermentation efficiency, slow start, etc.

Method used

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  • Method of utilizing rumen microbes to increase recycling rate of dry anaerobic fermentation organic solid waste

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Embodiment

[0030] (1) Take the naturally air-dried corn stalks, spray the crushed stalks on the surface with the biogas slurry from the anaerobic fermentation of agricultural organic solid waste or urban sludge fermentation, control the moisture content to 40%, seal it with a plastic film, and store it at room temperature After 10 days, the ammoniated straw was naturally air-dried and used as a fermentation substrate;

[0031] (2) Using ammoniated straw and fresh chicken manure as fermentation substrates, take a number of 1000ml fermentation bottles, and use 50g of dry matter and a C / N ratio of 25-30:1 as the basis to carry out the fermentation of fresh chicken manure and ammoniated straw. Mixing, adding 5-10 g of rumen microorganisms (dry weight) acclimatized and cultured in vitro to the mixed material, and adjusting the dry matter concentration of the substrate to 20% with a buffer solution;

[0032] (3) After the mixed material is stirred evenly, it is placed in a fermentation bottle,...

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Abstract

The invention discloses a method of utilizing rumen microbes to increase recycling rate of dry anaerobic fermentation organic solid waste and belongs to the field of organic solid waste recycling. The method includes: utilizing ammoniation agents like biogas slurry to pretreat cellulose biomass; mixing the cellulose biomass after being pretreated with poultry-livestock breeding waste according to a C / N proportion of 20-30:1; adding a rumen microbial agent in the mixing process, adjusting pH to 6.5-7.5, and utilizing the characteristic that the rumen microbes are efficient in hydrolysis and can generate methanol. A substrate in the method is low in moisten content, so that the problem of absorption of the biogas slurry after fermentation is avoided; the substrate is pretreated, so that biodegradability of the cellulose biomass waste is improved; the rumen microbial agent domesticated and cultured in vitro is inoculated, so that degrading efficiency and gas generating efficiency of the substrate can be improved and fermentation period can be shortened; the biogas slurry after fermentation has good nitrogen, phosphorus and potassium fertilizer effect, can directly serve as organic fertilizer and is simple in subsequent treatment.

Description

technical field [0001] The invention belongs to the field of resourceful treatment of organic solid waste, and relates to an integrated process method of using rumen microorganisms for domestication and cultivation in vitro, and performing dry anaerobic fermentation as an inoculant. For cellulosic biomass and poultry and livestock waste, dry anaerobic fermentation is carried out. On the basis of eliminating the problem of anaerobic fermentation biogas liquid digestion, the efficiency of dry fermentation gas production and the fertilizer efficiency of fermentation residues are improved. Background technique [0002] my country is a large agricultural country. At present, the annual output of straw in our country is about 800-900 million tons, and the comprehensive utilization rate is low. A large amount of remaining straw is dumped and incinerated, causing serious air pollution. In addition, my country's agricultural breeding industry is developing rapidly, and the annual out...

Claims

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Application Information

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IPC IPC(8): C12P5/02C12N1/36C02F11/04
CPCC12N1/36C12P5/023C12P2201/00C12P2203/00Y02E50/30
Inventor 杨凤林李枞林徐晓晨靳文尧
Owner DALIAN UNIV OF TECH
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