Thomas Bierbaum¹, Daniela Schmid¹, Norbert Klaas¹, Claus P Haslauer¹, Jürgen Braun², Frank Thomas Lange³ and Marco Scheurer³, (1)University of Stuttgart, IWS, VEGAS, Stuttgart, Germany, (2)University Stuttgart, IWS, VEGAS, Stuttgart, Germany, (3)Technologiezentrum Wasser, Karlsruhe, Germany