Straw and excrement mixed anaerobic fermentation reactor and biogas fermentation process thereof

Abstract

The invention belongs to the technical field of anaerobic fermentation, and particularly relates to a straw and excrement mixed anaerobic fermentation reactor and a biogas fermentation process thereof. The reactor comprises a tank body and supporting legs; the supporting legs are fixedly mounted on the lower surface of the tank body; a feeding hole is fixedly formed in the upper surface of the tank body; a discharge hole is fixedly formed in the side surface of the tank body; a vertical pipe and a transverse pipe are fixedly mounted on the side surface of the tank body; the lower end of the vertical pipe is fixedly connected with the transverse pipe, and the vertical pipe and the transverse pipe communicate with each other; an air guide pipe is fixedly mounted in the vertical pipe through a bracket; the lower end of the air guide pipe extends into the transverse pipe, and the upper end of the air guide pipe enters the tank body; the two ends of the transverse pipe are communicated with the inner space of the tank body; and an air outlet is fixedly formed in the upper surface of the vertical pipe. The reactor is simple in structure, the biogas slurry in the tank body is stirred in the biogas discharging process, energy consumption is reduced, and meanwhile, the fermentation efficiency is improved and the volume gas production rate is increased through dry and wet two-step fermentation.

Description

technical field [0001] The invention belongs to the technical field of anaerobic fermentation, in particular to a straw and feces mixed anaerobic fermentation reactor and a biogas fermentation process thereof. Background technique [0002] The commonly used method for treating organic waste is anaerobic fermentation, which can turn waste into treasure, that is, organic waste can be anaerobically fermented to generate biogas and biogas residue. Biogas is a renewable new energy source. It can be used as an organic fertilizer or a substrate for the production of organic compound fertilizers. At present, the conventional anaerobic fermentation device generally adopts a fully mixed fermenter (CSTR). Oxygen fermentation, on the one hand, due to the low density of straw, it is often easy to float on the top of the fermentation tank, which may easily cause crusting on the top of the material or short circuit of the material, and easily lead to blockage of the sludge pump; The biog...

AI Technical Summary

Problems solved by technology

[0004] In order to make up for the deficiencies of the existing technology and solve the problem of additional power consumption and increased energy consumption during the stirring process, at the same time, through two-step dry and wet fermentation, the fermentation effect of the material is improved, and the volumetric gas production rate is increased. The present invention proposes a straw , Feces mixed anaerobic fermentation reactor and its fermentation biogas process

Images