1. Research Institute of Resources and Environment Innovation, Shandong Jianzhu University, Jinan 250101, China
2. School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China
3. Shandong Urban Construction Vocational College, Jinan 250103, China
4. State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China