Treatment method for extracting grease from kitchen waste and performing biogas fermentation on kitchen waste

The invention discloses a treatment method for extracting grease from kitchen waste and performing biogas fermentation on the kitchen waste, and belongs to the field of garbage disposal. The extraction of the grease from the kitchen waste is realized by the organic coordination of the steps of performing solid-liquid separation, extracting liquid-phase grease, crushing the waste, strengthening homogenate, extracting solid-phase grease and the like. The biogas fermentation treatment on the kitchen waste is realized by further cooperating the grease extraction process serving as pre-treatment with the steps of hydrolysis treatment, anaerobic fermentation and the like. The treatment method is simple, has good economic benefit, and is relatively lower in investment and operation cost; and after the grease is extracted from the kitchen waste, the energy generation of the kitchen waste and the virtuous cycle of resource substances can be simultaneously realized through the innocent treatment of biogas preparation b