Method of producing biogas from pig manure

Abstract

The invention belongs to the field of fermentation technology, in particular to a method of producing biogas from pig manure. With pig manure, ficus microcarpa leaves, a ficus microcarpa agent, lignin degrading bacteria, a reaction auxiliary agent, bentonite and activated carbon as raw materials, the components which are proportioned have a synergistic effect, so that organic matters in the raw materials are effectively degraded, and therefore, the problem that macromolecular organic matters in a first fermenting stage have low efficiency and inadequate reaction is solved, and the gas production rate of biomass is obviously improved, and the fermenting rate is accelerated.

Description

technical field [0001] The invention belongs to the field of fermentation technology, in particular to a method for producing biogas from pig manure. Background technique [0002] Biogas fermentation is a process of microbial action, which is mainly divided into three stages: liquefaction, acid production and methane production. In the liquefaction stage, crop straw, human and animal manure, garbage and other organic wastes are usually used as carbohydrates in the form of macromolecules. , must be hydrolyzed by extracellular enzymes secreted by microorganisms, and decomposed into water-soluble small molecule compounds, that is, polysaccharides are hydrolyzed into monosaccharides or disaccharides, proteins are hydrolyzed into peptides and amino acids, and fats are decomposed into glycerol and fatty acids. Make small molecular compounds enter the cells and carry out a series of biochemical reactions; the acid production stage refers to the conversion of monosaccharides, peptid...

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Problems solved by technology

[0003] The anaerobic digestion process of biogas fermentation is divided into three stages. The first stage is the hydrolysis stage. Under the action of hydrolytic enzymes secreted by hydrolytic bacteria, large molecular complex organic matter is degraded into small molecular soluble organic matter, such as low molecular weight sugars. Compounds, fatty acids, amino acids, etc.; the second stage is the hydrogen-producing acetic acid stage, under the action of hydrogen-producing acetogenic bacteria, low-molecular-weight sugar compounds are further degraded into acetic acid, and hydrogen and carbon dioxide are produced; the third stage is methanogenic stage, methanogenic bacteria use hydrogen, carbon dioxide, and acetic acid to produce methane; most of the fermentation raw materials are usually produced as complex macromolecular organic compounds, and the reaction efficiency is low and the reaction is insufficient in the first stage of the fermentation process, which will affect the low biogas production. And other issues

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