Wastewater treatment with hydrogen and energy recovery in the dairy industry

In the REWAGEN project "Electrochemical WAter treatment system in the dairy industry with hydroGEN REcovery and electricity production", a European project consortium with partners from research and industry under the leadership of the Fraunhofer IGB is developing a multi-stage process for the efficient electrochemical treatment of process and waste water from the milk-processing industry. The individual process steps are combined and integrated into a closed process. The aim is that each process step delivers a material flow that can be further processed or returned to the system. For example, the hydrogen produced during the electrolytic treatment of the water is to be used to supply parts of the plant with electrical energy. The purified water can be directly reused, depending on requirements. By means of a modular design, the system is to be flexibly adapted to the wastewater volumes of even smaller dairies and milk-processing plants.


Project information

Project titel

REWAGEN –  Electrochemical WAter treatment system in the dairy industry with hydroGEN REcovery and electricity production


Project duration

June 2012 – May 2016



  • Fraunhofer IGB


Cooperation partners

  • Fraunhofer IGB (Germany)
  • Asociacion Acondicionamiento Tarrasense – LEITAT (Spain)
  • HyGear B.V. (Netherlands)
  • Aqon Water Solutions GmbH (Germany)
  • Knowledge Innovation Market S.L.U. – KIM (Spain)
  • Idropan Dell Orto Depuratori SRL (Italy)
  • Productes El Canadell SL (Spain)
  • C-Tech Innovation Limited (United Kingdom)
  • ISA - Intelligent Sensing Anywhere S.A. (Portugal)
  • Eilenburger Elektrolyse- und Umwelttechnik GmbH (Germany)
  • LGI Consulting (France)
  • Unité Technique du SEMIDE (France)


The research leading to results in this project will be funded under the Seventh Framework Programme of the European Union (FP7/2007-2013) in accordance with Grant Agreement No 283018.

flag eu