1. Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, P.R. China, Tel. , Tel. ; Fax: , Tel.
2. State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, P.R. China
3. Kurita Water Industries Ltd., Nakano-ku, Tokyo 164-0001, Japan, Tel.