An additional treatment step for the Removal of Micropollutants in Wastewater based on the BIOZONE® process, protecting our waters.
As a result of the amendment to the Water Protection Act in Switzerland, many wastewater treatment plants require a new treatment stage for the elimination of micropollutants. For the Porrentruy wastewater treatment plant, WABAG was awarded the expansion of a 4th treatment stage with the target to achieve the highest possible degree of elimination of organic micropollutants. The process chosen for the Porrentruy WWTP is a combined process of ozonation followed by a bioactive filter (BIOZONE®).
Project Features:
- Scope: EP contract. Design, engineering, supply and installation of the electromechanical equipment and commissioning of the process technology.
- Treatment Process:
- Employment of the inhouse developed BIOZONE® process, a combination of ozonation and filtration.
- Process technology:
- Ozone production and ozone input into wastewater
- Residual ozone destruction
- Single layer deep bed filtration (medium: anthracite)
- Impact: Micropollutants include a wide range of substances of mainly anthropogenic origin and infiltrate both surface and underground water reserves in a number of differing ways. Municipal WWTPs are not the sole path of input for micropollutants, but certainly the main one. Adding a 4th treatment step that removes a high degree of the micropollutants contributes significantly to protecting the aquatic environment and achieving a good chemical and ecological status in surface waters.
