Operational experience with disk fabric filters in terms of removing macro- and micropollutants from wastewater

Le résumé fourni par la source

The municipal wastewater treatment plant in Miedzyzdroje – a Polish seaside resort and tourist destination where a significant increase in the number of tourists during the summer season is regitered – was modernized, to increase the efficiency of wastewater treatment in terms of macro and micropollutants, in the context of new Directive (EU) 2024/3019 adopted in 2024, which amends EU Directive No. 91/271/EEC of May 21, 1991. The modernization consisted, among other things, of supplementing the process technology with an additional continuous gravity filtration process, known as the third stage of treatment. Filtration of wastewater treated by conventional methods (mechanical and biological) is carried out using fabric disk filters of SF6/30 type produced by Mecana AG. The purpose of this study was to analyze the efficiency of removing selected pollutants during the additional gravity filtration process, considering the high annual volumetric variability of wastewater inflowing into the treatment plant. The change in the values of selected wastewater quality indicators and the concentration values of selected micropollutants: per- and polyfluorinated organic compounds PFAS/PFOA, selected pharmaceuticals, and benzotriazoles, were analyzed. The changes in the values of the analyzed indicators confirmed the validity of the applied filtration process as the third stage of wastewater treatment. This creates the possibility of using treated wastewater for municipal purposes that are not subject to quality limits.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.