1. School of Civil Engineering, Chang'an University, Xi'an, China.
2. Key Laboratory of Water Supply & Sewage Engineering, Ministry of Housing and Urban-rural Development, Chang'an University, Xi'an, China.
3. School of Environmental Science and Engineering, Chang'an University, Xi'an, China.
4. Key Laboratory of Environmental Protection & Pollution and Remediation of Water and Soil of Shaanxi Province, Chang'an University, Xi'an, China.