1. Department of Water Resources and Environment; Sun Yat-sen University; Guangzhou 510275 China
2. State Key Laboratory of Pulp and Paper Engineering; South China University of Technology; Guangzhou 510640 China
3. College of Environment and Energy; South China University of Technology; Guangzhou 510640 China
4. The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education; South China University of Technology; Guangzhou 510006 China