Unpowered biogas production device capable of automatically stirring and recycling feed liquid

Abstract

The invention discloses an unpowered biogas production device capable of automatically stirring and recycling feed liquid, and belongs to the technical field of biogas production. The unpowered biogas production device comprises a sewage solid-liquid separation tank, a biogas digester (8) and a biogas residue tank (13), and is characterized in that the solid-liquid separation tank comprises a coarse residue tank (14), a fine residue tank (6), a membrane filtering tank (3) and a neutral water tank (1); the coarse residue tank (14) and the fine residue tank (6) are connected with the biogas digester (8) through a biogas digester siphon (7); a middle-upper part of a wall body of the biogas residue tank (13) is connected with the biogas digester (8) through a biogas residue discharging pipe (12); an upper part of the biogas residue tank (13) is connected with a biogas liquid tank (10) through a grid filter screen (11); the bottom of the biogas liquid tank (10) is provided with a biogas liquid siphon (9) leading to the bottom of the biogas digester (8), and extending upwards in a U shape to a middle part of the biogas digester. By adopting the biogas digester, an automatic efficient stirring effect and feed liquid recycling are realized through a reasonable pipeline layout in the processes of producing biogas and using the biogas, external power is not required, and energy is not consumed.

Description

technical field [0001] The invention belongs to the technical field of biogas production, and in particular relates to a biogas production device which can automatically stir without power and recycle feed liquid. Background technique [0002] Biogas is produced by the decomposition of organic substances by a variety of microorganisms (collectively referred to as biogas bacteria) under the conditions of isolating the air and maintaining a certain moisture, temperature, and pH. The process in which biogas bacteria decompose organic matter to produce biogas is called biogas fermentation. In the biogas fermentation process, the fermentation raw material is not only the substrate for biogas production, but also the source of nutrients for the survival of biogas fermentation microorganisms. Biogas fermentation raw materials are very extensive and abundant. In addition to mineral oil and lignin, organic substances in nature can generally be used as raw materials for biogas fermen...

AI Technical Summary

Problems solved by technology

There are still some deficiencies in the three stirring methods used in the prior art, such as mechanical stirring and liquid stirring, which need a mixer and a delivery pump to complete, so it is necessary to increase equipment and energy consumption

However, the stirring power of the gas produced by biogas is limited, and it cannot be stirred evenly, which reduces the yield of biogas

Images