Abstract:

In response to the issues of unclear construction and operational status of food waste treatment facilities and the excessive government subsidies affecting decision-making management, this study systematically collected and analyzed operational data from 530 centralized treatment facilities and 3,971 decentralized treatment facilities nationwide, with a -total treatment capacity of 141,100 tons per day. The research finds that the average load rate of existing treatment facilities is below 70%. Centralized treatment facilities primarily operate at a  scale range of 100-300 tons per day, the application of technologies ranked as follows: anaerobic digestion > co-incineration > aerobic fermentation > biotransformation. The unit investment intensity ranges from 300,000 to 800,000 yuan per ton, and the median government subsidy for waste treatment is 232 yuan per ton. Decentralized treatment facilities generally face technical challenges such as high energy consumption, unstable output quality, incomplete product evaluation systems, and difficulties in odor pollution control, making them suitable mainly for specific scenarios where centralized treatment is not economically feasible. The study indicates that low revenue from resource recovery products is a key factor driving high government subsidies. It is recommended to implement cost-reduction and efficiency-improvement measures, such as increasing subsidies for biogas resource utilization and developing low-cost treatment technologies, to narrow the gap with incineration treatment subsidies. This research provides data support and decision-making references for optimizing the layout of food waste treatment facilities and subsidy policies.

Key words: Food waste')">

Food waste, Treatment technologies, Cost analysis, Cost reduction and efficiency improvement