Hongqiang REN is Professor and Dean of School of Environment, Nanjing University. He is the winner of National Natural Science Fund for Distinguished Young Scholars and Distinguished Professor of Chang Jiang Scholars. He is Vice President of China Energy Society, Director of Engineering Center, Ministry of Education, Water Treatment and Water Environment Rehabilitation and Deputy Director of Academic Committee of National Environmental Protection Pharmaceutical Wastewater Treatment Engineering Center. He proforms research in the field of anaerobic biological treatment technology.