The renovation project of Dajing Landfill covers a total area of 60 mu, handling 80,000 cubic meters of old garbage. After the second phase expansion, the storage capacity of sanitary landfill is 694.38+00,000 cubic meters. The construction contents mainly include auxiliary facilities such as site cleaning of landfill (including excavation and relocation of simple landfill, earthwork cleaning of sanitary landfill phase II), groundwater collection and drainage system, seepage control system, leachate collection and drainage system, landfill gas collection and drainage system, flood interception ditch expansion, landfill operation road, rain and sewage diversion system, landfill operation facilities and equipment, and environmental monitoring system. In addition, there are leachate treatment station and drainage pipeline from regulating tank to leachate treatment station.