Fenton 산화법에 의한 매립장 침출수의 생물 분해성 증진에 관한 평가

Evaluation on Enhanced Biodegradability in Landfill Leachate by Fenton Oxidation

This study was aimed to investigate treatment feasibility of leachate from D landfill that is located in gyrungbuk. From the analytical results of leachate, organic and nonbiodegradable matters were contained in high concentration. Thus chemical treatment was introduced to degrade nonbiodegradable matters in pre or post biological process. Two types of Fenton oxidation were adapted in this study. The first one is pre treatment process before biological treatment. The second one is post treatment process after biological treatment. The optimal conditions of both treatment methods were investigated as follows. In case of pre treatment process, the optimal conditions appeared in Fe^{+2}/H2O2(mmol/mmol): 0.1, H2O2/CODcr(mg/mg): 27.0, pH: 3 and reaction time: 2hrs. On the other hand, in case of post treatment process, the optimal conditions appeared in Fe^{2+}(mmol/mmol): 0.14, H2O2/COD{cr}(mg/mg): 57.4, pH: 3 and reaction time: 1.25hrs. In the above optimal conditions, high COD removal was obtained in pre and post treatment process. Also it can expect that Fenton oxidation converted nonbiodegradable matters into biodegradable matters.