Secondary effluent purification by a large-scale multi-stage surface-flow constructed wetland: A case study in northern China.
Bioresour Technol 2017 Nov 2. Epub 2017 Nov 2.
National Engineering Laboratory of Coal-Fired Pollutants Emission Reduction, Shandong University, Jinan 250061, PR China.
Assessment of treatment performance in the large-scale constructed wetland (CW) for secondary effluent purification remains limited. The aim of this case study was to therefore to investigate the long-term treatment capacity of organics and ammonium pollutants in a large-scale multi-stage surface-flow (SF) CW fed with secondary effluents from the wastewater treatment plants (WWTPs) in northern China. The results for two-and-half-year study period indicated that the water quality parameters including chemical oxygen demand (COD) and ammonium (NH4(+)-N) met the Chinese Grade III of Environmental Quality Standards. Read More