This paper examines the removal of mineral oil from oily wastewater by a hybrid ultrasonic and electrochemical circulating flow process. The Box-Behnken design was used to study the effects of number of cycles, current density, flow rate and the presence of ultrasound on the efficiency of mineral oil removal and process optimization. A reduced cubic regression model with estimated coefficients was developed to describe the mineral oil removal rate. The experimental results show that this novel hybrid system can effectively reduce mineral oil by 94.3 % under the optimal conditions of 14.130 cycles, current density of 53.07 A/m² and a flow rate of 0.234 L/s. The experimental observations agreed well with the modelled values, and the model was verified experimentally. Under the optimal conditions, the electrical energy consumption was 10.04 kWh/m³ and the average operational costs were 2.04 EUR/m³.

本文研究了通过混合超声波和电化学循环流动工艺从含油废水中去除矿物油。Box-Behnken 设计用于研究循环次数、电流密度、流速和超声波对矿物油去除效率和工艺优化的影响。开发了具有估计系数的简化三次回归模型来描述矿物油去除率。实验结果表明，该新型混合系统在14.130次循环、53.07 A/m ^{2电流密度的最佳条件下，可有效减少矿物油94.3%。}和 0.234 L/s 的流速。实验观察结果与模拟值吻合良好，并通过实验验证了模型。在最佳条件下，电能消耗为10.04 kWh/m ³，平均运行成本为2.04 EUR/m ³。