1. Sino-Canadian Joint R&D Center on Water and Environmental Safety/College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, P.R. China
2. Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore
3. School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore