1) 2018.01-present: Associate professor, doctoral student advisor, Department of Environmental Sciences and Engineering, Xi’an Jiaotong University, China.

2) 2016.12-2017.12: Visiting scholar in Nebraska-Lincoln University, USA 2016.1-Present: Associate professor, doctoral student advisor, Department of Environmental Sciences and Engineering, Xi’an Jiaotong University, China.

3) 2011.01-2015.12: Lecturer, master student advisor, Department of Environmental Sciences and Engineering, Xi’an Jiaotong University, China.

4) 2009.3-2010.4: Assistant researcher, institute of Environmental Systems Research, University of Osnabrueck, Germany.

 5) 2007.10-2009.02: Post-doctor in Chemical Engineering and Technology Post-doctoral Research Center, Dalian University of Technology, China.

6) 2001.9-2003.8: Engineering in Landa Bio-environmental and technology company, Dalian, China