Summary description： The main process adopted in the leachate treatment project of dongnanzhao domestic waste sanitary landfill site is coagulation + sedimentation + anoxic + good + MBR + two-stage DTRO, and the effluent quality meets the table 2 standard of "pollution control standard for domestic waste landfill" (GB 16889-2008). The project ensures the normal operation of the landfill site and avoids the irreversible environmental problems caused by leachate to the surrounding soil and underground water area.