Purification and reclamation of wastewater by an integrated biological pond system

作者：Zhenbin Wu, Yicheng Xia, Yongyuan Zhang, Jiaqi Deng, Xitao Chen, Zhan Facui, Biao Wang · 年份：1994 · 研究领域：Water Quality Monitoring and Analysis、Water Quality Monitoring Technologies、Wastewater Treatment and Reuse

The feasibility of an inexpensive wastewater treatment system is evaluated in this study. The experiment was conducted in 3 phases with different treatment combinations for testing their purification efficiencies. The pond system was divided into 3 functional regions: influent purification, effluent upgrading and multi-utilization. Various kinds of aquatic organisms, were effectively cooperated in this system. The system attained high reduction of BOD-5, COD, TSS, TN, TP and other pollutants. The mutagenic effect and numbers of bacteria and virus significantly declined during the process of purification. After the wastewater flowed through the upgrading zone, the concentrations of pollutants and algae evidently decreased. Plant harvesting did not yield dramatic effects on reductions of the main pollutants, through it did affect remarkably the biomass productivity of the macrophytes. The wastewater was reclaimed for various purposes.