Application of RBC and Constructed Wetland in Treating North Rural Sewage
A system of ecological gravel bed and constructed wetland has been developed to treat rural sewage with a processing capacity of 400 m3/d.The collected results demonstrated that this system/design significantly improved the rural sewage.When the COD,ammonia nitrogen and TP of raw water was no more than 200.0 mg/L,40 mg/L and 4 mg/L,the average removal rates of COD,ammonia nitrogen,TN and TP were 78.98%,92.02%,69.44%and 87.98%respectively.The major indices meet Daqing River Basin Water Pollutant Discharge Standard(DB 13/2795-2018).This system has exhibited robust treatment capabilities in processing waterways with a wide spectrum of qualities.This project is estimated to reduce Cod,nitrogen,and TP by 23.36 ton,5.548 ton,and 0.38 ton respectively annually,which significantly improved the ecological environment of the main channel in City.