Abstract: The method of leachate treatment using Fenton and improved coagulation processes was described. Experiments were carried on leachate from municipal landfill in Promnik near Kielce (Poland). Coagulation was helped by fly ash taken from municipal heat-power plant. The amount of ferric (II) coagulant dosage on efficiency of permanganate index removal were studied. The characteristic values of main physico-chemical parameters for the examined leachate samples are presented. Results show that advanced oxidation processes enable mineralization of refractory organic compounds contained in leachate, which are not readily biodegradable. The addition of ashes (0.2%o) during flocculation is beneficial.
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