Double reverse biological membrane sewage treatment device

The utility model provides a double reverse biological membrane sewage treatment device which is characterized by comprising an anoxic tank, an aerobic tank and a sedimentation tank which are connected in sequence, reverse biological membranes are placed in the anoxic tank, and each reverse biological membrane comprises a breathable hydrophobic membrane and a microbial membrane growing on the surface of the breathable hydrophobic membrane in an attached mode; the volume of the anoxic tank is larger than that of the aerobic tank. The device has the characteristics of high oxygen utilization rate, high pollutant mass transfer and removal efficiency and the like, and is small in aeration rate, low in energy consumption and convenient to manage. 本实用新型提出了一种双反向生物膜污水处理装置，其特征在于：包括依次相连的缺氧池、好氧池和沉淀池，所述缺氧池内放置反向生物膜，所述反向生物膜包括透气疏水膜和附着生长在透气疏水膜表面的微生物膜；所述缺氧池的容积大于好氧池。具有氧气利用率高，污染物传质、去除效率高等特点，曝气量小，能耗低，方便管理。