Published on 01 October 2020
Feasibility study describes the O3-STEP® filter as very promising
In a newly published study, the O3-STEP® filter concept is described as very promising by STOWA and the Ministry of Infrastructure and Water Management. The O3-STEP® filter scores better than the reference technique on set criteria. This innovative purification technique removes nutrients, suspended matter and micropollutants in one compact purification step through the clever combination of ozone oxidation and adsorption of active carbon.
Current technical, social and administrative attention to the presence of medicines and other (organic) micropollutants in surface water, groundwater and drinking water requires extra steps in water purification. That is why Witteveen+Bos, together with Waternet, TU Delft and CABOT Norit, demonstrated the feasibility of the O3-STEP® filter on a laboratory scale in 2018. This autumn, a long-term pilot study will be started at rwzi Horstermeer, on which Nijhuis Industries is also collaborating.
The report can be found on the STOWA website (report available in Dutch only)