Domestic sewage treatment project in Derong County, Ganzi Tibetan Autonomous Prefecture, Sichuan Province, scale: 450m ³/d, adopting regulating pool + A2O (MBBR)+ inclined tube sedimentation + coagulation sedimentation + valveless filter process, meeting the first-level A standard of the "Pollutant Discharge Standards for Urban Sewage Treatment Plants"

Regulating tank + A2O(MBBR) + inclined pipe sedimentation + coagulation sedimentation + valveless filter tank

The tailwater discharge shall comply with the first-class A standard of the "Pollutant Discharge Standard for Urban Sewage Treatment Plants", and the specific indicators are as follows