Biogas fermentation device with one-way flow of biogas slurry to promote uniform distribution of bacteria

Abstract

The invention discloses a biogas fermentation device for promoting uniform distribution of strains through unidirectional biogas slurry flow. The biogas fermentation device comprises a feed pipe, a discharge pipe and a U-shaped fermentation pipeline, wherein a water pressure room is placed at the upper part of the U-shaped fermentation pipeline; the water pressure room is connected to a bacteria distribution device; the bacteria distribution device consists of a drain pipe, a U-shaped bacteria distribution pipe and bacteria distribution holes; the side, deviating from the feed pipe and the discharge pipe, of the water pressure room is connected to the drain pipe of the bacteria distribution device, and the other side of the drain pipe is connected to the U-shaped bacteria distribution pipe fixed in the fermentation pipeline; a one-way valve for controlling biogas slurry in the water pressure room to unidirectionally flow in the feed pipe is arranged on a feed pipe drainage hole, a one-way valve for controlling biogas slurry in the discharge pipe to unidirectionally flow in the water pressure room is arranged on a discharge pipe drain hole, and a one-way valve for controlling biogas slurry in the fermentation pipeline to unidirectionally flow in the water pressure room is arranged on the drain pipe of the bacteria distribution device; the horizontal plane where the lowest point of the drain hole of the discharge pipe is positioned, is lower than the horizontal plane where the lowest point of the drain pipe of the bacteria distribution device is positioned.

Description

technical field [0001] The invention relates to the technical field of biogas, in particular to a biogas fermentation system. Background technique [0002] China's biogas originated in the 1970s and has a development history of nearly 40 years. It has experienced three stages of ups and downs. From 1971 to 1981, it was a stage of rapid development and decline; from 1981 to 1991, it was a stage of adjustment and emphasis on technology; 1991 The period from 2000 to 2000 is the stage of recovery and the benefits are highlighted; the period from 2001 to 2009 is the stage of comprehensive improvement and rapid development; after 2009, it tends to fall back. [0003] Looking back at the ups and downs of biogas development in China, we have fully analyzed the existing problems of biogas (household use) in China: 1. The structure of the biogas fermentation part is unreasonable, and the current promotion is still the pool type fermentation system in the 1980s , It is difficult to fe...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the fermentation route in the biogas fermentation system is short, the biogas slurry self-circulation effect is poor, and the uneven distribution of bacteria in the biogas slurry affects the gas production rate

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