**About the Editors**

**Yuanzheng Zhai**, male, PhD, associate professor, faculty member of Beijing Normal University from 2011 to now. Perform research in hydrogeology and teach undergraduate postgraduate class in applied hydrogeology and modern hydrogeochemistry.

**Jin Wu**, male, PhD, associate professor, faculty member of Beijing University of Technology from 2017 to now. Perform research in ecological risk assessment and teach undergraduate postgraduate class in water environment model.

**Huaqing Wang**, male, PhD, professor, research team leader, faculty member of University of Normandy Le Havre. Perform higher education and scientific research in French universities, and main fields are water resources and environment, especially mass transport in groundwater and numerical simulation.
