Process for treating kitchen waste by mechanical sorting and two-phase anaerobic fermentation

The invention relates to a process for treating kitchen waste by mechanical sorting and two-phase anaerobic fermentation. The process for treating kitchen waste by mechanical sorting and two-phase anaerobic fermentation comprises the following steps in sequence: a pre-sorting step, an anaerobic fermentation step, a hydrolysis and acidification step, a fermentation product treatment step and an oxidation compositing step. By the adoption of the process, the kitchen waste can be recycled safely and efficiently, environment-friendly treatment is realized, the hazard of kitchen leftovers can be eradicated from the origin, the problem of resource shortage in China can be relieved.