1. College of Resource and Environmental Engineering, Guizhou University, Guiyang 550025, China
2. Key Laboratory of Karst Georesources and Environment, Ministry of Education (MOE), Guiyang 550025, China
3. Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong
4. College of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, China
5. Key Laboratory of Industrial Ecology and Environmental Engineering (MOE) and School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China