响应面法优化Fenton氧化处理高浓度废乳化液

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、FeSO_4·7H_2O加入量、H_2O_2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FeSO_4·7H_2O加入量初始pHH_2O_2加入量,初始pH与H_2O_2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,FeSO_4·7H_2O加入量为22 mmol/L,H_2O_2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。

Optimization of Fenton oxidation treatment of highly concentrated waste emulsion by response surface method

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.