Zhao Youcai is currently a professor of environmental engineering at School of Environmental Science and Engineering, Tongji University. He got bachelor degree from Sichuan University (1984) and Ph.D. from Institute of Chemical Metallurgy (now Institute of Process Engineering), Chinese Academy of Sciences, Beijing (1989). After finishing Postdoctoral research work at Fudan University, Shanghai, he joined in Tongji University in 1991. Meanwhile, he had ever worked at Aristotle University, Greece, National University of Singapore, Tulane University, USA, and Paul Scherrer Institute, Switzerland for 4 years as research fellow or visiting professor. He had authored or coauthored 138 publications published in the peer-reviewed internationally recognized journals, 420 publications in China journals, and 75 books (as an author or Editor-in-chief). Currently, his research interests include treatment of municipal solid wastes, sewage sludge, hazardous wastes, polluted construction wastes, and industrial wastes.