Hongtao Wang is an associate professor in the College of Environmental Science and Engineering of Tongji University, Shanghai, P.R. China. He has also worked for UNEP-Tongji Institute of Environment for Sustainable Development from 2009. He has conducted research for three years in Bren School of Environmental Science and Management of University of California at Santa Barbara, USA. He received his Ph.D. degree in Environmental Science from Tongji University in 2010. His current research interest includes water resources management and water treatment.