Key Laboratory of Yangtze River Water Environment Ministry of Education(Tongji University) Shanghai 200092 China;
State Key Laboratory of Pollution Control and Resources Reuse Tongji University Shanghai 200092 China;
Key Laboratory of Yangtze River Water Environment Ministry of Education(Tongji University) Shanghai 200092 China;
Key Laboratory of Yangtze River Water Environment Ministry of Education(Tongji University) Shanghai 200092 China;
School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 China;
nitrification; drinking water; ammoniaoxidizing bacteria(AOB); chloramines; organic carbon; heterotrophic bacteria;