响应面法优化Fenton氧化处理高浓度废乳化液

摘要

The research on the tre atment of highly concentrated waste emulsion by Fenton oxidation method has been implementated. Based on Box-Behnken response surface method ,the single effects and cross effects of initial pH,FeSO4·7H2O dosage and H2O2 dosage are investigated,and a mathematical model of COD removing rate is esta-blished. The results shows that the sequence of influential-factor significance is as follows:FeSO4·7H2O dosage>ini-tial pH>H2O2 dosage. The cross effects of the dosages of initial pH and H2O2 are significant. The regression of mathe-matical model is pretty good. The best COD removing rate presumed is 89.46%. The optimum conditions for Fenton oxidation are determined as follows:the initial pH=4.1,FeSO4·7H2O dosage is 22 mmol/L,and H2O2 dosage is 636 mmol/L,the confirmatory experiment result is 89.11%,which is basically complies with the predicted value of fitted quadratic regression model.%采用Fenton氧化法对高浓度废乳化液处理进行了研究,基于Box-Behnken响应面法,考察了初始pH、FeSO4·7H2O加入量、H2O2加入量的单独作用和交叉作用,并建立了COD去除率数学模型,结果表明:影响因子显著性FeSO4·7H2O加入量>初始pH>H2O2加入量,初始pH与H2O2加入量的交叉作用显著;数学模型回归性较好,预测最佳COD去除率为89.46%.确定了Fenton氧化最佳条件为:初始pH为4.1,FeSO4·7H2O加入量为22 mmol/L,H2O2加入量为636 mmol/L,验证试验结果为89.11%,与拟合的二次回归模型预测值基本相符.