Influence of filter backwashing on iron, manganese, and ammonium removal in dual-media rapid sand filters used for drinking water production. - Boersma AS; Haukelidsaeter S; Kirwan L; Corbetta A; Vos L; Lenstra WK; Schoonenberg F; Borger K; van der Wielen PWJJ; van Kessel MAHJ; Slomp CP; Lücker S (Water research, 2025)