On the basis of single factor experiment,the operating conditions of rotary electric Fenton device for removing COD from landfill leachate was optimized by Box-Behnken response surface method.The optimal operating conditions obtained by response surface fitting were that the external voltage was 9.36 V,the elec-trode stirring rate was 119.73 r/min,the effective contact area of electrode was 89.1 cm2,and the predicted COD removal rate was 68.56％.Under these optimal conditions,using rotary electric Fenton device to treat 6 L of actual water samples,the removal rate of COD was 69.83％,and the absolute error between measured and predicted values was 1.27％,indicating a good agreement between them.
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