Affiliation: | 1. Centre for Resource and Environmental Research, Beijing University of Chemical Technology, Beijing 100029, China;2. China National General Machinery Engineering Corporation, Beijing 100050, China;3. Department of Water Supply and Environmental Engineering, Arba Minch University, P.O. Box 21, Arba Minch, Ethiopia;4. Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164, USA |