1. Chair of Urban Water Systems Engineering, Technical University of Munich, Am Coulombwall 3, 85748 Garching, Germany
2. National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China
3. Water Chemistry and Water Technology, Engler-Bunte-Institut, Karlsruhe Institute of Technology, Karlsruhe 85748, Germany
4. Department of Civil and Environmental Engineering, Northwestern University, Evanston, Illinois 60208, United States
5. School of Chemical Engineering, the University of Queensland, St. Lucia, Queensland 4072, Australia