Preparation method of compound enzyme preparation for promoting production of methane from kitchen waste through anaerobic fermentation

The invention discloses a preparation method of a compound enzyme preparation for promoting production of methane from kitchen waste through anaerobic fermentation. The preparation method is characterized by comprising the following steps of: 1, preparing formula compositions which comprises liquifying enzyme, saccharifying enzyme, cellulase and lipase; 2, separation: classifying and recovering non-biomass parts in the kitchen waste through a manual or mechanical method, wherein a biomass part enters into a composite enzymatic hydrolysis process; 3, crushing and homogenating: crushing the biomass part obtained after the kitchen waste is separated into paste, and homogenating for later use; 4, composite enzymatic hydrolysis; and 5, anaerobic fermentation. According to the invention, from the aspects of methane anaerobic fermentation microbial metabolism and enzyme activity change rule, through using a compound enzyme preparation formula, the effects of promoting rapid and efficient hydrolysis of the kitchen waste and growth and metabolism of methane fermentation microorganism are achieved, and the purpose of efficient and stable operation of a system for producing methane by the kitchen waste through anaerobic fermentation is further realized.