Environment-friendly power generation method utilizing livestock and poultry excrement to produce biogas

Abstract

The invention discloses an environment-friendly power generation method utilizing livestock and poultry excrement to produce biogas. The method comprises the following steps that (1) the livestock andpoultry excrement is primarily screened through a discharging system; (2) the livestock and poultry excrement without sand is added into a blending tank, and auxiliary materials are added for blending; (3) the blended livestock and poultry excrement is added into an acidification precipitation tank for precipitation and acidification; (4) the material obtained after acidification and precipitation is fed into a fermentation tank to produce the biogas, and the produced biogas is pretreated and delivered to a power generation device for power generation; (5) generated biogas residues and biogasslurry enter a transfer tank, the biogas residues obtained after filtration are used for producing solid organic fertilizer, and the biogas slurry enters a biogas slurry tank; and (6) the biogas slurry in the biogas slurry tank is subjected to anaerobic treatment and returned to the discharging system or the blending tank to be blended into livestock and poultry excrement water or irrigation water. According to the method, the livestock and poultry excrement is firstly fermented to generate the biogas, the generated biogas is used for power generation, and the biogas residues generated afterfermentation are used as a raw material for producing the organic fertilizer, so that the purpose of fully utilizing the livestock and poultry excrement is achieved.

Description

technical field [0001] The invention relates to the technical field of environmentally friendly treatment of livestock and poultry manure, in particular to a power generation method for producing biogas and generating electricity in an environmentally friendly manner using livestock and poultry manure. Background technique [0002] As the country's environmental protection requirements for animal breeding and production are getting higher and higher, the environmental protection treatment of livestock and poultry animal manure has become more and more difficult to solve in the industry. Most of the current breeding enterprises adopt intensive captive breeding. Under this breeding mode, it is necessary to wash the ground in the pens every day to clean up the feces, which leads to the water content of livestock and poultry feces as high as 85-95%. Under such circumstances, to use high-moisture livestock and poultry manure to produce organic fertilizers, it is necessary to add ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is aimed at the current animal breeding industry, the environmental protection requirements of the production process are getting higher and higher, the treatment of livestock and poultry manure has become a difficult problem in the industry, and the methods for processing livestock and poultry manure in the industry are not ideal at present, and Provided is a power generation method that uses livestock and poultry manure to produce biogas for environmentally friendly power generation

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