This book presents the achievements of the national water pollution control and management project majoring in urban area. It proposes technical routes and solutions for sludge treatment and disposal and utilization of urban sewage.

Prof. Dr. Xiaohu Dai is once served as Dean of the College of Environmental Science and Engineering and Director of National Engineering Research Center for Urban Pollution Control of Tongji University. He studied in Germany from 1987 and graduated from Civil Engineering Department of RUHR-University Bochum, Germany, and obtained doctor’s degree in 1992. He lived and worked in Germany for 23 years. Prof. Xiaohu Dai is severed Deputy Director of division of civil environment of S&T Commission of MoE; Consultative Committee Member of Engineering and Materials Division of the National Natural Science Foundation of China; Convenor and Specialist Committee Member of “Waste Recovery”—key research program of MoST; Specialist Committee Member of “Chinese National 863 plans” for Resource and Environment (group leader of pollution control subcommittee); Specialist Committee Member of Major Water Project and Expert of Major Water Project “City Water Pollution Control.”
 
Professor Dai has long focused on the research of resource recovery from sludge and organic waste. He has proposed a resource cycle-oriented solution for urban organic solid waste, published many academic papers and monographs, and obtained a number of international patents.