1. Department of Environmental Science and Engineering; Zhongnan University of Economics and Law; Wuhan China
2. Shaanxi Key Laboratory of Comprehensive Utilization of Tailing Resources; Shangluo University; Shaanxi China
3. Institute of Water Sciences and College of Engineering; Peking University; Beijing China
4. School of Economics; Zhongnan University of Economics and Law; Wuhan China
5. Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources; Inner Mongolia University of Science and Technology; Baotou China