A pilot study of three-stage biological-chemical treatment of landfill leachate applying continuous ferric sludge reuse in Fenton-like processKlein, Kati; Kivi, Arthur; Dulova, Niina; Zekker, Ivar; Mölder, Erik; Tenno, Toomas; Trapido, Marina; Tenno, TaavoClean technologies and environmental policy2017 / p. 541-551 : ill https://doi.org/10.1007/s10098-016-1245-5