Method for producing biogas in large biogas project

Abstract

The invention discloses a method for producing biogas in a large biogas project, and relates to the field of biogas projects. The method specifically comprises the following steps of: (1) conveying pig manure and wastewater to a wastewater treatment station, and filtering sands and suspensions in pig manure through a grating tank; (2) conveying treated pig manure and wastewater to a hydrolysis acidification pool to dilute and stir so as to improve the biodegradability of wastewater and removing COD (Chemical Oxygen Demand) in wastewater; (3) conveying raw materials treated by the step (2) to a fermenting chamber through a feeding pump to hermetically ferment so as to product biogas; (4) treating biogas produced by the step (3) through a gas-water separator and a desulfurizing tower device; (5) collecting biogas treated by the step (4) to a gas storage cabinet; and (6) metering biogas stored by the step (5) through a biogas flowmeter, pressurizing by a frequency conversion pressurizing device, conveying the biogas to a generator room to generate electricity so as to solve electricity for production and living in farms. The method provided by the invention has the advantages of saving the energy resource, improving the environment, enhancing the fertilizer effect, improving the soil, accelerating the development of breeding industry, saving the labor force and the like, so that the method is an energy-saving and environmental-friendly green project.

Description

Technical field: [0001] The invention relates to a method for producing biogas, in particular to a method for producing biogas in a large-scale biogas project using poultry manure as a raw material in poultry storage farms. Background technique: [0002] The production and development of biogas utilize a large amount of crop stalks. As a rich energy source, it has been widely used in people's life and industrial and agricultural production. However, with the development of animal husbandry, it brings excessive concentration of livestock and poultry excrement and a large increase in flushing water. According to the survey, the total sewage discharge of livestock and poultry breeding in the province is as high as more than 900 million tons, and intensive farms account for a relatively large proportion. The development of animal husbandry and the transformation of production methods have not only promoted agricultural efficiency and farmers' income, but also brought about a la...

AI Technical Summary

Problems solved by technology

These odors have seriously deteriorated the quality of the atmospheric environment inside and outside the livestock and poultry farms, and are harmful to the staff of the livestock and poultry industry. They will also affect the production performance of livestock and poultry and reduce their productivity.

[0005] Third: The organic matter in the livestock and poultry manure that enters the soil can be completely decomposed by the action of microorganisms. Not only will it not pollute the environment, but it can also provide the soil with nutrients needed for plant growth and maintain the self-purification fertility of the soil. However, due to If the manure is piled up and not applied to the soil, it will be piled up near the farm, exceeding the digestion capacity of the piled soil, causing pollution

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