Use of a UV/H$_{2}$O$_{2}$ process for posttreatment of a biologically treated composting leachate

Authors : Mohammad Mehdi AMIN, Mohammad Mehdi Ahmad MOAZZAM

Pages : 404-410

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :This research was conducted to investigate the efficacy and feasibility of a UV/H$_{2}$O$_{2}$ process as a posttreatment step for complete treatment of a biologically treated composting leachate. This study was an experimental study and was conducted during April to September 2013. Leachate samples from the effluent of a multistep biological treatment system were used for further treatment by the UV/H$_{2}$O$_{2}$ process. The effectiveness of the pH values insert ignore into journalissuearticles values(2-10);, H$_{2}$O$_{2}$ concentrations insert ignore into journalissuearticles values(0.5-4 g/L);, and reaction times insert ignore into journalissuearticles values(15-75 min); were evaluated to determine optimum operational conditions. The highest removal efficiencies were 90%, 92%, 90%, and 88% for chemical oxygen demand insert ignore into journalissuearticles values(COD);, biochemical oxygen demand$_{5}$ insert ignore into journalissuearticles values(BOD$_{5});$, total organic carbon insert ignore into journalissuearticles values(TOC);, and total suspended solids insert ignore into journalissuearticles values(TSS); respectively, at the optimum operation conditions insert ignore into journalissuearticles values(pH 4, 3 g/L H$_{2}$O$_{2}$ concentration, and 75 min reaction time);. The UV/H$_{2}$O$_{2}$ was found to oxidize preferably COD and BOD$_{5}$ of the leachate samples and, as a consequence, a decrease in the organic loads of the leachate was observed after oxidation treatment. The UV/H$_{2}$O$_{2}$ process proved to be a feasible posttreatment method for a biologically treated composting leachate and effectively reduced the organic loads.
Keywords : Composting leachate, biological treatment, UV H 2 O 2 process, organic loads