1. College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
2. Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China
3. Technical Innovation Center of Mine Geological Environment Restoration Engineering in Southern Stony Hill Area, Nanning 530000, China
4. College of Earth Sciences, Guilin University of Technology, Guilin 541004, China