A kind of preparation method of biogas fermentation promoting bacterial agent

Abstract

The invention provides a preparation method of a microbial agent for promoting biogas fermentation. The preparation method includes: mixing an inoculum with a fermentation substrate, and performing anaerobic fermentation under 32-37 DEG C for 50 days to obtain the microbial agent, wherein the inoculum is prepared by mixing, based on the volumetric weight of microbial culture solutions, 15-20 partsof Firmicutes culture solution, 15-20 parts of bacteroid culture solution, 3-5 parts of spirochete culture solution, 4-6 parts of Thermotoga culture solution, 3-5 parts of mycetozoan culture solution, 3-5 parts of Synergistes culture solution, 3-5 parts of Fibrobacteres culture solution and 35-40 parts of Euryarchaeota culture solution; the fermentation substrate is agricultural organic waste. The preparation method has the advantages that the prepared microbial agent can satisfy the requirements of different types of raw materials, and the fermentation substrate of the microbial agent is lowin cost; the preparation method can greatly reduce manpower cost and time cost; the dry type anaerobic fermentation is used in the preparation process of the microbial agent, and the prepared microbial agent is low in water content and convenient to store and transport.

Description

technical field [0001] The invention relates to a preparation method of a biogas fermentation-promoting bacterial agent, which belongs to the technical field of organic waste utilization and renewable energy production. Background technique [0002] As a renewable resource of ground biomass, biogas has a long history of use. However, with the increasing demand for economical and scientific biogas production technology, many related technologies have been developed. Among them, the research on biogas accelerator is a hotspot. [0003] At present, the main accelerators can be simply divided into chemical substance accelerators and bacterial agent accelerators. [0004] The main research and development ideas of chemical substance accelerators are to promote the growth of methanogenic bacteria and improve their gas production efficiency, such as the Chinese patent with the authorization number CN 103642846 B and the Chinese patent with the publication number CN 102925493 A. ...

AI Technical Summary

Problems solved by technology

[0007] However, the research in this field is not yet mature in terms of bacterial agent accelerators, and there is still a lot of room for improvement in the technical effects of gas production efficiency, gas production cycle and raw material adaptability

[0008] In addition, although some accelerators have good effects, the strains used are difficult to obtain or require rigorous isolation and cultivation, which affects their popularization and application.

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