Abstract:

The research on the treatment 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.

Key words: highly concentrated waste emulsion, Fenton oxidation, Box-Behnken response surface method

摘要：

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。

关键词: 高浓度废乳化液, Fenton氧化, Box-Behnken响应面法

CLC Number: 

• X703.1