Enterprise Europe Network

Wastewater purification by ozonation via membrane contactors

Country of origin:
External Id: 
Last update
Expiration date


Partner keyword: 
Industrial Water Treatment
Municipal Water Treatment
Wastewater Recycling
Drinking Water
Water treatment equipment and waste disposal systems
Water collection, treatment and supply


A German technical university renowned for its advances in water treatment technologies has developed a novel ozone reactor for the purification of process- and wastewater. The main innovation versus conventional technologies lies within its reduced spatial requirements, modular structure and scalability, as well as its low operating costs. The institute is interested in a cooperation in the framework of a license or a research cooperation agreement to advance the technology from TRL 5 onward.



Synthetic substances like pharmaceuticals or plasticizers find their way into wastewater and influence or even harm humans and the environment. The use of ozone is one method to destroy those contaminants, as well as bacteria and viruses solved in water. However, these conventional methods are cost-intensive and require a lot of energy, which is why they are not always applicable, let alone suitable.

Therefore, the aim of this innovation developed by a German technical university is to provide an ozonation method for wastewater that can save energy and resources and thus increase its applicability in scope. The method consists of novel membrane reactors with special fluid distribution devices that allow a bubble-free emission of ozoniferous gases into the liquid phase. Moreover, this system allows for the reuse of oxygen remaining within the gaseous phase after contacting the ozoniferous gas with the liquid phase.

The university is interested in a cooperation in the framework of a license agreement or a research cooperation agreement. A future licensee would have the authorization to use the technology in return for a fee or a share of royalties. The client is also open to agree on a research cooperation agreement that aims at a joint further development of the technology. These cooperation types have been selected in order to find the most effective way of advancing the technology from TRL 5 onward - either through an external or a cooperative effort.

Advantages & innovations

Cooperation plus value: 
In contrast to conventional ozone reactors that are currently used for the ozonation of drinking water, of process water and of wastewater, the novel system greatly reduces space requirements, energy consumption and operating costs. Due to its modular structure, the system is easily scalable to the requested capacity. The plug flow enables a more effective and more efficient ozone utilization. Moreover, the technology does not encounter issues when treating wastewaters that tend toward strong foaming.

Stage of development

Cooperation stage dev stage: 
Prototype available for demonstration

Partner sought

Cooperation area: 
The university is looking for partners from the wastewater treatment sector (private and municipal) and from relevant research institutes for a license or a research cooperation agreement. In the framework of a license agreement the partners sought are industry, SMEs or research institutes (incl. universities). The partner will be authorized to use the licensed technology for, e.g., the development and production of new forms of separator material. In case of a research cooperation agreement the partner sought could also be industry, an SME or an academic partner in order to jointly continue the development of the technology.

Type and size

Cooperation task: 
SME 11-50,University,R&D Institution,SME <10,>500 MNE,251-500,SME 51-250,>500


Membrane contactor implemented in demo plant; results of cleaning wastewater as O3 conc. increases


Prototype of the reactor module (length 3.5m)