Small-Sized Non-Sludge-Discharged Sewage Treatment and Reuse System
无污泥小型生活污水处理与回用系统

A small-sized sewage treatment and reuse system without sludge discharge has been developed,based on a process consisting of two stages of contact anaerobic filters, two stages of contact aero bio filters, a slow sand filter and a fast sand filter. Generally, a domestic sewage can be treated through this system to give a satisfactory effluent, with a BOD removal of 91.7%, a COD removal of 88. 9%, a SS removal of 91.1%, and a total P removal of up to 43.5%.