An anaerobic digestion reaction device based on self-sustaining air flotation screening

Abstract

The invention discloses an anaerobic digestion reaction device based on self-sustaining air floatation screening. A base is included, wherein a reaction tank is arranged above the middle position of the base; self-sustaining air floatation screening tanks are arranged on the two sides of the reaction tank; the lower end of the self-sustaining air floatation screening tank is connected with the base through a supporting base, and the self-sustaining air floatation screening tank is provided with a U-shaped cavity. A feeding pump is arranged on one side in the supporting seat; the output end ofthe feeding pump is connected with one end of a U-shaped cavity; a sludge outlet is formed in the other end of the U-shaped cavity; according to the anaerobic digestion reaction device based on self-sustaining air floatation screening, reaction operation is carried out through the arranged reaction tank; the self-sustaining air floatation screening tanks are additionally arranged on the two sidesof the reaction tank; high-activity methanogenesis microorganisms are screened and flow back into the reaction tank through the self-sustaining air floatation screening tank, inert heavy degradation-resistant substances are discharged from the sludge outlet through precipitation, traditional full-mixing type discharging is replaced, more inert substances are contained in discharged materials, andthe degradation effect in the reaction tank is prevented from being affected.

Description

technical field [0001] The invention relates to the technical field of anaerobic digestion of waste, in particular to an anaerobic digestion reaction device based on self-sustaining air flotation screening. Background technique [0002] Anaerobic digestion is a complex chain reaction process consisting of four processes: hydrolysis, acidification, acetogenic / dehydrogenation, and methane production. Each degradation step is completed by different bacterial groups that are interrelated to a certain extent, and The requirements for the environment are different. First, the high molecular weight substances or monomers in the organic matter are firstly utilized by the hydrolysis fermentation bacteria to produce acetic acid, hydrogen, propionic acid, butyric acid and other volatile fatty acids. The accumulation of hydrogen will inhibit the activity of acetic acid bacteria, so maintaining a low hydrogen partial pressure is very important for hydrogen-producing acetogenic bacteria, ...

AI Technical Summary

Problems solved by technology

The accumulation of hydrogen will inhibit the activity of acetic acid bacteria, so maintaining a low hydrogen partial pressure is very important for hydrogen-producing acetogenic bacteria, the entire anaerobic digestion process can be combined into two major stages of hydrolysis acid production and methane production, while the current After the reaction of the anaerobic digestion reactor is completed, the output is the traditional full-mixing discharge, and the discharge is not completely degraded inert materials, which is not conducive to the degradation effect of the anaerobic digestion reactor. Therefore, the present invention proposes An anaerobic digestion reaction device based on self-sustained air flotation screening to solve the problems in the prior art

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