AN EXAMPLE OF A TYPICAL KITCHEN WASTE COMPREHENSIVE TREATMENT PROJECT IN CHINA

The output of kitchen waste in China accounts for more than half of the total municipal solid waste. It is an urgent problem to promote the resource utilization and harmless treatment of kitchen waste. The typical comprehensive treatment project of kitchen waste introduced in this paper consists of five parts: pretreatment system, anaerobic fermentation system, biogas purification and storage system, biogas residue and biogas liquid treatment system and deodorization system, covering an area of 19000 m², with a total investment of RMB 99.78 million and a kitchen waste treatment scale of 200 t/d. The average biogas output is 7740 m³/d, in which the methane content is more than 60%. The reduction and recycling of kitchen waste was realized well. It can be taken as a reference for the disposal of kitchen waste in other cities in China.