The sedimentation tank is discrete to the biological oxidation ditch at the West Wastewater Treatment Plant (with capacity of 70 000 m 3/d) in Beidaihe summer resort, Hebei Province.

• 北戴河西部污水处理厂建设规模 7万m3 /d ,采用生化与沉淀分建式氧化沟处理工艺 ;