1. School of Civil Engineering, Northeast Dianli University, Jilin 132012, China; 2. State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China; 3. Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China; 4. Vanillin Factory, Jilin Petrochemical Company, China National Petroleum Corporation, Jilin 132021, China