Prof. Dr. Liang Duan is a Professor at the State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China. He obtained his Ph.D. Degree from the Tongji University in 2009. At the same time, he completed joint doctoral training at the University of California, Berkeley, from 2007 to 2008. From 2009 to 2012, he worked as an Assistant Professor at the Institute of Water Ecology and Environment, Chinese Academy of Environmental Sciences, then he became a postdoctoral fellow at the Department of Civil and Environmental Engineering, University of California, Berkeley, from 2011 to 2012. His main research areas are water ecological restoration technology and wastewater regeneration and reuse technology.