Elimination of micropollutants in wastewater

Project title:
Pho2zon - Electrolysis oxygen for application in wastewater treatment - elimination of micropollutants via ozonation and photocatalysis

Funding body:
Federal Ministry of Education and Research (BMBF)

Project duration:
01.05.2023 – 31.12.2025

Principal investigator of the project:
Prof. Dr. Mark Jentsch

Project partners:
Involved in the project are partners of the WIR! alliance h2-well: Institut für Angewandte Wasserstoffforschung Sonneberg gGmbH, Lynatox GmbH, Materialforschungs- und -prüfanstalt an der Bauhaus-Universität Weimar und Wasserversorgungs- und Abwasserzweckverband Sonneberg. The project is lead by the Chair of Energy Systems at Bauhaus-Universität Weimar.

Team members involved in the project:
Dipl. UWT Sebastian Büttner, Patrick Engel M. Sc.

Project outline

 The overarching goal of the joint project is to develop, implement and test a process combination for electrolysis oxygen-based micropollutant elimination by ozonation and photocatalysis as the basis for a local hydrogen supply infrastructure.  The coordination of the joint project and thus the cooperation of the project partners of the Bauhaus-Universität is incumbent on.

In the subproject of the Bauhaus-Universität Weimar, the modelling, dimensioning, development, implementation and monitoring of the ozonation including the processing of the electrolysis oxygen is carried out. In addition, as already described, the Bauhaus-Universität also takes on project coordination tasks in order to successfully integrate the overall system at the site of the Sonneberg-Heubisch experimental sewage treatment plant.

The following focal points result from the joint project as well as subproject for the Bauhaus-Universität:

  • Development, implementation and testing of a system for electrolysis oxygen drying for oxygen utilization in an ozone generator
  • Development, implementation and testing of an ozonation reactor for the efficient introduction of ozone into wastewater
  • Modelling of the overall system consisting of ozone generator, ozonation reactor and photocatalysis modules as a downstream fourth purification stage of municipal sewage treatment plant
  • Implementation of the entire system as a pilot plant on a technical scale as well as integration into the existing EI&C technology at the Sonneberg-Heubisch sewage treatment plant
  • Test operation of the entire system under real conditions with accompanying water analysis (trace substances) and data acquisition
  • Material and energy evaluation of the entire system after trial operation

The diagram of the overall system shown in Figure 1 provides an overview of the overall system as well as the components to be developed within the framework of the subproject of the Bauhaus-Universität Weimar.

(Kopie 1)

Fig. 1 - Diagram of the overall system for electrolysis oxygen-based micropollutant elimination by ozonation and photocatalysis.