**About the Editors**

#### **Martin Wagner**

Prof. Dr.-Ing. habil. Martin Wagner graduated from the Technical University Darmstadt, Germany, in 1983 and holds a doctoral degree as Civil Engineer. Since 1996, he is General Manager of the Institute IWAR, Technical University Darmstadt. In 2006, he was nominated as Professor Honorarium at the Qingdao Technological University, China. Since 2009, he is Head of the Section China of German Water Partnership. In 2014, he received the certificate for Honorary Professorship from the Tongji University Shanghai. His expertise focuses on waste water treatment, aeration and gas transfer, energy in wastewater treatment plants and water infrastructure solutions for fast growing urban areas.

Prof. Wagner was honored with the "White Magnolia" of the Government of Shanghai, the top award for foreigners. Another award is the Qilu-laurate, the highest award for foreigners of Shangdong Province (China).

#### **Sonja Bauer**

Prof. Dr.-Ing. Sonja Bauer studied spatial planning at the Technische Universitat Dortmund. ¨ This was followed by activities in a private planning office for urban development as well as with a municipality in the field of urban planning and urban development. From 2012 to 2019, Ms. Bauer worked as a research assistant at the Department of Land Management at the Technische Universitat¨ Darmstadt, where she received her PhD in 2016. From September 2019 until the end of August 2022, she was a professor for Land Management at Hochschule fur Technik Stuttgart. As of September ¨ 01, 2022, Ms. Bauer was appointed to the Ostbayerische Technische Hochschule Amberg-Weiden to represent the professorship of Land Management. Her research focus is on water reuse for sustainable spatial development.
