Response Surface Methodology To Optimize Leachate Treatment Process

摘要

Response Surface Methodology (RSM) was used in a statistically designed experiment in an attempt to optimize the Fenton Process for reducing the chemical oxygen demand (COD) of landfill leachate. The leachate generated in sanitary landfills is complex in composition and a primary measure of its strength is the COD. A reduction in the COD allows for greater flexibility in disposal options for the leachate. The reduction in the COD of landfill leachate using the Fenton oxidation process (advanced oxidation process (AOP) with the Fenton Reagent) was studied in the laboratory. A response surface and contour plots of optimum COD removal efficiency were developed and validated in the laboratory. Several optimal conditions were predicted at a pH of 3.0, H_2O_2:Fe(Ⅱ) mole ratio ranging from 3.18-4.00, Fe(Ⅱ) dosage ranging from 0.044-0.05 M and COD concentration of 2450 mg/L resulting in COD reductions ranging from 81.6-87.5%.