[Research advances in anaerobic co-digestion of biogas fermentation substrates].

With global climate change,more and more attention has been paid to the development of bio-energy.Biogas fermentation,as a fairly mature technology of bio-matter energy transformation,has received considerable attention and experienced much development.How to improve the efficiency of biogas fermentation and promote its industrialization is a pressing issue.Anaerobic co-digestion is a simple,low-cost,and high-efficiency method for enhancing the efficiency of biogas fermentation,and received increasing attention from related researchers.This paper summarized the characteristics of various fermentation substrates,reviewed the research advances in the co-digestion of animal manure,sewage sludge,and industrial waste,with the focus on the advantages of co-digestion and the factors affecting the rate and efficiency of co-digestion,and prospected the future research of co-digestion and its application,aimed to provide theoretical guidance for the promotion and application of co-digestion techniques.