1. Centre for Technology in Water and Wastewater School of Civil and Environmental Engineering University of Technology Sydney Sydney NSW 2007 Australia
2. School of Civil and Environmental Engineering University of New South Wales Sydney NSW 2052 Australia
3. Department of Civil and Environmental Engineering The Hong Kong Polytechnic University Kowloon Hong Kong P. R. China
4. Tianjin Key Laboratory of Aquatic Science and Technology School of Environmental and Municipal Engineering Tianjin Chengjian University Jinjing Road 26 Tianjin 300384 China
5. Department of Chemical and Biological Engineering University of Sheffield Sheffield S10 2TN UK
6. Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy The Hong Kong Polytechnic University Hung Hom, Kowloon Hong Kong P. R. China