Gangshan-Ciaotou Sewage Treatment Plant occupies an area of about five hectares and, when complete, will have a total capacity of 50,000 cubic meters per day. The plant is designed to treat incoming wastewater with BOD (biochemical oxygen demand) and SS (suspended solid) levels of up to 170 mg/L. According to standards set by the Environmental Protection Administration, BOD and SS levels of the effluent can be no greater than 20 mg/L prior to discharge into the Dianbao River.
　　Sinotech provided design and construction supervision services for phase one of the project. In this first phase, the plant has an average treatment capacity of 20,000 cubic meters per day. Work items include a pumping station, pre-treatment and primary sedimentation clarifiers, three-stage feed AO biological treatment basins, secondary sedimentation clarifiers, disinfection tanks, a sludge treatment building, and a control center.