Anaerobic fermentation coupling and hydrothermal liquidation treatment method for kitchen waste

The invention belongs to the technical field of biomass energy, and in particular relates to an anaerobic fermentation coupling and hydrothermal liquidation treatment method for kitchen waste. The anaerobic fermentation coupling and hydrothermal liquidation treatment method comprises the following steps of pre-treating the kitchen waste; producing oil by carrying out hydrothermal liquidation on crude oil; producing methane, a biogas residue and biogas liquid through anaerobic fermentation; purifying and utilizing multi-stage products. According to the anaerobic fermentation coupling and hydrothermal liquidation treatment method for the kitchen waste, disclosed by the invention, the kitchen waste is treated by adopting a hydrothermal liquidation and anaerobic fermentation coupling technology, so that harmless and resourceful treatment and high-value utilization of the kitchen waste are realized.