Low-temperature biogas leavening agent and preparation method thereof

Abstract

The technical problem to be solved in the invention is to overcome the defects in the prior art, so the invention provides a compound microorganism bacterium agent preparation, preservation and application technology through which biogas can be efficiently generated under the low-temperature condition. Water can be added into the compound bacterium agent and the mixture is directly added into a rural biogas digester after being uniformly mixed with low-temperature cellulose, so that the winter biogas can be kept stable. Besides, the invention further provides a compound bacterium agent preparation, preservation and application method.

Description

technical field [0001] The invention relates to a low-temperature biogas fermentation agent and a preparation method thereof, in particular to various low-temperature biogas fermentation microorganisms and their cultivation, preparation and storage methods, belonging to the field of agricultural technology. Background technique [0002] The state issued the "Agricultural Biomass Energy Industry Development Plan (2007-2015)", which focused on the development of rural biogas. Since the implementation of the rural biogas project, the state has invested 5 billion funds in the construction of rural biogas infrastructure. However, due to the long winter in the north, the low gas production of biogas digesters has plagued the development of the industry. Generally, the gas production of biogas digesters in winter accounts for about 10% of the annual gas production. 3%, so increasing the gas production in winter is a must to improve the utilization rate of biogas energy. At present...

AI Technical Summary

Problems solved by technology

[0003] A Chinese patent for a methanogenic compound bacterial agent and its preparation method, the patent number is 200910187435.0 discloses the following content: a methanogenic compound bacterial agent and its preparation method solves the problem of the lack of efficient methanogenic bacteria in existing biogas digesters, which leads to The long-standing problem of biogas initial start-up time and poor gas production stability, it adopts the Methanosarcina acetophilus DSM-No.2834, Methanobacillus forminum DSM-No. Bacillus DSM-No.1125, Methanolobus Tyndallus DSM-No.2278, and Methanolobus kenzii DSM-No.6752 were inoculated in liquid methanogen culture medium under anaerobic conditions, and were separately expanded and cultivated step by step. The final methanogen bacteria solution is mixed together according to the volume ratio, which is the liquid methanogenic composite bacterial agent; the liquid methanogenic composite bacterial agent can also be prepared into a solid methanogenic composite bacterial agent

[0006] The above-mentioned patented technologies all disclose different preparation methods of bacterial agents, but they all have the problems of low efficiency and slow response in special winter environments.