1. Haking Wong Building, Department of Civil Engineering, the University of Hong Kong, Pokfulam Road, Hong Kong China
2. Department of Water Resources, City of Lakewood, California, United States
3. Centre for Technology in Water and Wastewater, University of Technology Sydney, Ultimo NSW 2007, Australia
4. KWR Watercycle Research Institute, 3433 PE Nieuwegein, Netherlands
5. Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore
6. Particle and Interfacial Technology Group, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium