Box-Behnken响应面分析法对双阳极电Fenton法处理垃圾渗滤液工艺的优化

采用双阳极电Fenton法处理垃圾渗滤液,并在阴极曝气。应用Box-Behnken响应面分析法对电Fenton法处理的结果进行了优化,将Fe2+投加量、电压、和反应时间3个因素进行实验设计,得到二次响应曲面模型。响应面分析表明,Fe2+投加量与反应时间的交互作用对COD去除率影响最大,其次是电压与反应时间的交互作用。优化后的结果:Fe2+投加量、电压、和反应时间分别为3 219.2 mg/L、6.11 V和180 min。模型方差分析得到F值和R2分别为24.2和0.977,说明该二次方程是显著的,模型在整个回归区域内拟合好,能够很好地反映电Fenton法处理垃圾渗滤液的过程。

Optimization of electro-Fenton process for landfill leachate by Box-Behnken response surface methodological analysis

Landfill leachate was treated by electro-Fenton technology.The Box-Behnken response surface analysis method was used to optimize landfill leachate treatment technology by the electro Fenton process.Three factors:Fe2+ dosing quantity, voltage, and reaction time, were studied in the Box-Behnken experimental design.The response surface model was determined by analyzing the response surface method results.The analysis showed that the interaction between Fe2+ dosing quantity and the reaction time had considerable influence on COD removal rate, followed by the voltage and reaction time interaction.The optimal results for Fe2+ dosing quantity, voltage, and reaction time were 3 219.2 mg/L, 6.11 V, and 180 min, respectively.The variance analysis of the model showed that the F value and R2 were 24.2 and 0.977, respectively, which meant that the quadratic equation was significant.The analysis of variance showed that the model was effective at simulating the treatment of landfill leachate by the electro Fenton method.