1. Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou Jiaotong University, No. 88 Anning West Road, Lanzhou 730070, China
2. School of Environment and Municipal Engineering, Lanzhou Jiaotong University, No. 88 Anning West Road, Lanzhou 730070, China
3. Engineering Research Center of Comprehensive Utilization of Water Resources in Cold and Drought Areas, Ministry of Education, No. 88 Anning West Road, Lanzhou 730070, China