1. College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541006, China
2. The Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin University of Technology, Guilin 541006, China
3. Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin 541006, China
4. College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China