Cold area garage-type dry biogas fermentation system and working method thereof

Abstract

The invention relates to a cold area garage-type dry biogas fermentation system and a working method thereof, and belongs to the technical field of resource utilization of organic solid waste. The cold area garage-type dry biogas fermentation system comprises a fermentation tank, a solar warming system, a biogas slurry spraying system, a biogas purification storage system and an aerating system. According to the cold area garage-type dry biogas fermentation system and the working method thereof which are provided by the invention, a sun board greenhouse is adopted, so that sunlight can be guaranteed to permeate into the greenhouse as much as possible, is irradiated to a black flexible membrane, but cannot enable the flexible membrane to be exposed in the atmosphere to cause heat loss, and thus, excellent warming and heat preservation effects can be achieved; heat energy of a solar heat collection system can be accumulated in daytime in a heat storage and heat exchange water tank arranged in the tank bottom; when an environmental temperature is relatively low at night, the accumulated heat energy is transferred to materials, so that the heat energy not only can be used for ensuring the temperature of the materials in the fermentation tank, but also can heat a water tank internal aerator pipe passing through the solar warming system; the aerating system can well utilize biogas generated by a reactor to dredge a material pile so as to improve a heat transfer rate.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of organic solid waste, and in particular relates to a garage-type dry biogas fermentation system in cold regions and a working method thereof. Background technique [0002] Our province is rich in agricultural organic solid waste resources, the current situation of treatment and utilization is not good, and the pollution is serious; at the same time, we are facing the current situation of primary energy shortage in rural areas that needs to be solved urgently. The development of stable gas production in four seasons, high-efficiency and low-cost biogas devices can promote the harmless treatment and resource utilization of agricultural organic waste such as livestock manure and straw, and eliminate the pollution of surface water, groundwater, atmospheric environment and microbial pollution by manure and straw. , Improve rural and urban life and environmental quality. [0003] The exi...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a garage-type dry biogas fermentation system and its working method in cold regions, which are used to solve the problems of low energy consumption and stable operation of existing dry biogas projects in winter, uneven heating of fermentation materials, and Technical issues such as high construction costs

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