Using Ozonation And Biologically Active Filtration To Remove Micropollutants

By Uwe Hübner, PhD

In wastewater treatment applications, organic micropollutants (OMPs) pose a unique challenge due to their diverse chemical structures, chemical stability, and resistance to biological treatment processes. In the early 2000s, water authorities in the EU began using ozonation and biologically active filtration (O3-BAF) to address the issue of OMPs in wastewater treatment. O3-BAF has been used for drinking water disinfection and oxidation since the 1970s, but ongoing studies have shown its effectiveness in removing wastewater contaminants, including OMPs.

In particular, water authorities in the U.S. are considering its benefits as a more cost-effective alternative to RO systems for potable reuse. Understanding how this technology works, what contaminants it can treat, what it can’t treat, and more can help water authorities determine if O3-BAF is right for them.