A kind of priming agent for biogas residue aerobic fermentation and preparation method thereof

Abstract

The invention provides a primer for biogas residue aerobic fermentation and a preparation method thereof. The priming agent includes compound microbial bacterial agent, biochar, wood acetic acid and microbial culture medium. The composite microbial bacterial agent is prepared by mixing and culturing different species of microbial bacterial agents; the microbial bacterial agent includes: bacillus, lactic acid bacteria, enterococcus, brevibacillus, flavor-like bacteria and acetic acid bacteria. The present invention aims at key technical bottlenecks such as slow heating rate, short high temperature period, and unfavorable decomposing process in the biogas residue aerobic fermentation process, and combines the principles of physics, chemistry and microbiology for the change of organic matter and microbial community structure in the biogas residue aerobic fermentation process , research and develop environmentally friendly, high-efficiency and low-cost biogas residue aerobic fermentation initiators to shorten the heating time of biogas residue aerobic fermentation, prolong the high temperature period, improve the quality of aerobic fermentation products, improve the efficiency of biogas residue aerobic fermentation, and contribute to the treatment and resources of biogas residues Provide technical support for chemical utilization.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of agricultural waste, and in particular relates to a primer for aerobic fermentation with biogas residue as a main raw material and a preparation method thereof. Background technique [0002] Aerobic fermentation is an effective way of resource utilization of organic waste. Its essence is to make organic matter mineralized, humified and harmless through high-temperature fermentation under the action of microorganisms under certain conditions of moisture, C / N ratio and ventilation. The process of becoming decomposed fertilizer. The characteristics of fermentation raw materials, C / N ratio, moisture, temperature, ventilation conditions, pH value, etc. are closely related to the growth and activity of aerobic fermentation microorganisms, which in turn affect the efficiency of aerobic fermentation and the maturity of fermented products. A complete aerobic fermentation process can be divi...

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Problems solved by technology

[0004] Biogas residue is rich in nutrients and is an excellent raw material for organic fertilizer. However, biogas residue is mainly composed of cellulose and other refractory organic matter, with low C / N ratio, high moisture content, and small porosity, which lead to aerobic fermentation of biogas residue. The heating rate of the process is slow, the high temperature period is short, it is not conducive to decomposing, and the quality of aerobic fermentation products is poor, etc.

Patent CN201810265985.9 provides a rapid aerobic fermentation method for biogas residues, but in this method, the aerobic fermentation process has large ventilation and high energy consumption, which is not conducive to the large-scale treatment of biogas residues aerobic fermentation

Studies have shown that in the aerobic fermentation process with biogas residue as the main raw material, the aerobic fermentation mixture can heat up quickly within 24 hours in summer, but the temperature of the material in winter rises slowly.

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