Preparation method and application of activated biogas residue hydrothermal carbon

Abstract

The invention discloses a preparation method and application of activated biogas residue hydrothermal carbon. The activated biogas residue hydrothermal carbon serves as an additive and is added in theanaerobic fermentation process taking fecal residue and waste water as a fermentation substrate, biogas residue is recycled, and the biogas production efficiency in the anaerobic fermentation processis improved. The preparation method and application of the activated biogas residue hydrothermal carbon have the beneficial effects that the biogas residue is recycled and used for anaerobic fermentation engineering, material circulation is achieved, and meanwhile the high value utilization path of biogas residue is developed; the cost of the preparation method is low, the technology is simple, extra raw material purchasing is not needed, and in the preparation process, the condition is mild, energy consuming is small, and the cost is low; and in addition, the biogas production in the anaerobic fermentation system and the content of methane in the biogas can further be improved, thus the fermentation efficiency is high, the fermentation system is stable, and the problems that existing biogas residue is difficult to consume, and the anaerobic fermentation efficiency of the fecal residue and waste water is low are solved.

Description

technical field

[0001] The invention relates to the field of livestock and poultry manure treatment and resource utilization, in particular to a preparation method and application of activated biogas residue hydrothermal carbon. Background technique

[0002] The unprecedented development of large-scale livestock and poultry farming has resulted in a large amount of concentrated livestock and poultry manure that is difficult to process and digest, causing increasing pressure on the environment. According to industry statistics, my country currently produces 3.8 billion tons of livestock and poultry manure every year, ranking first in the world, but the comprehensive utilization rate is less than 60%, making it the world's largest animal husbandry polluter. In fact, livestock and poultry manure is a resource that has been misplaced. If it is handled properly, it will produce a large amount of sustainable biogas, biogas and other clean energy, which will play a role in solving ...