DE / EN / RU / AR WTE Group Services credentials R&D IMS Current Career Download Contact Patents Research projects Publications Lectures Our patents As an innovative company, we are constantly working on new processes and developing our own patents. We are proud of our patents: title Patent number Process for biological wastewater treatment using the activated sludge process and system for carrying out the process DE 198 00 664 Method for measuring the concentration of nitrogen gas in water or wastewater DE 199 06 392 Process for influencing the sludge index volume with the aim of avoiding floating sludge in sewage treatment plants EP 1 445 239 Wastewater treatment plant with improved activated sludge separation EP 1 854 524 Method and device for measuring sludge levels DE 10 2010 031 857 Process for reducing floating sludge in the sewage treatment plant DE 10 2010 031 751 begin R&D Patents Contact WTE Wassertechnik GmbH +49 201 8968 571 Lisa Heim-Neumann Fax +49 201 8968 555 info@wte.de Ruhrallee 185 45136 Essen Germany WTE Group WTE Wassertechnik GmbH WTE Betriebsgesellschaft mbH WTE management Company profile Services Project modules Planning and construction business financing Services R&D Patents Research projects Publications Lectures IMS Quality management Environmental management Osh Energy management Download Annual report Company brochure Project data sheets imprint Terms of Use Disclaimer Copyright © 2016 by WTE Wassertechnik GmbH, Ruhrallee 185, 45136 Essen, Germany