Thomas Senfter^1,2, Martin Pillei^1,3, Manuel Berger^1,4, Roland Eisendle⁵, Anke Bockreis², Wolfgang Rauch² and Michael Kraxner¹, (1)Environmental, Process & Energy Engineering, MCI - The Entrepreneurial School, Innsbruck, Austria, (2)Unit of Environmental Engineering, University of Innsbruck, Innsbruck, Austria, (3)Institute of Fluid Mechanics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany, (4)Dept. of Oto-Rhino-Laryngology, MUI – Medical University of Innsbruck, Innsbruck, Austria, (5)Abwasserverband Zirl und Umgebung, Zirl, Austria