1. Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstr. 133, 8600 Duebendorf, Switzerland
2. ERZ, Entsorgung und Recycling Stadt Zürich, WWTP Werdhölzli, Bändlistrasse 108, 8010 Zurich, Switzerland
3. ETH Zürich, Institute of Environmental Engineering, 8093 Zürich, Switzerland