1. School of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China
2. College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443000, China
3. Jilin Water Environment Monitoring Center, Jilin Provincial Bureau of Hydrology and Water Resources, Changchun 130022, China
4. College of Water Resources, North China University of Water Resources and Electric Power, Zhengzhou 450045, China