1. Key Laboratory of Drinking Water Science and Technology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P. R. China
2. Section of Sanitary Engineering, Department of Water Management, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, Delft 2628 CN, The Netherlands
3. College of Environmental Science and Engineering, Guilin University of Technology, Guangxi 541004, China
4. Waternet, Department Research & Innovation, P.O. Box 94370, Amsterdam 1090 GJ, The Netherlands
5. University of Chinese Academy of Sciences, Beijing 100040, China