Method for improving efficiency of methane production through anaerobic fermentation and methane content in biogas

Abstract

The invention belongs to the field of biogas production through anaerobic fermentation of organic solid wastes and particularly discloses a method for improving the efficiency of methane production through anaerobic fermentation and the methane content in a biogas. CaO2 is added to organic solid waste fermentation raw materials to form a microaerobic environment, thereby improving the efficiency of methane production through anaerobic fermentation and the methane content in the biogas. The method is mainly applied to the field of biogas production through anaerobic fermentation of the organic solid wastes such as straws and manure; the hydrolysis rate of anaerobic fermentation can be improved through adding a little of CaO2 to a reaction system, the methane content in the biogas is increased and the stability of a fermentation system is improved.

Description

technical field

[0001] The invention belongs to the field of producing biogas by anaerobic fermentation of organic solid waste, in particular to a method for improving the methane production efficiency of anaerobic fermentation and the content of methane in the biogas. Background technique

[0002] Worldwide, a large amount of organic solid waste such as crop straw, livestock and poultry manure, and kitchen waste is produced every year. The rational disposal of the generated waste is a difficult problem of sustainable development. Anaerobic fermentation technology is an ideal means to deal with organic waste such as crop straws, livestock and poultry manure. Anaerobic fermentation technology can not only generate renewable energy-biogas, but also the fermentation residue can be used in agriculture as organic fertilizer. Therefore, anaerobic fermentation has attracted more and more attention worldwide.

[0003] However, in the anaerobic fermentation process of organic waste...

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