Abstract: In this study,bipolar three-dimensional electrocatalytic reactor was applied to benzothiazole degradation and its structural parameters were investigated in order to improve the pollutant removal efficiency and reduce the energy consumption of electrochemistry reactor.Firstly,the electrode form was improved by comparing the degree of mineralization,mineralization current efficiency and energy consumption in the reaction system.Then response surface methodology based on Box-Behnken design was successfully applied to analyze the effect of the structural parameters and their interaction on benzothiazole degradation.The effects of three variables,impressed voltage,electrode distance and particle electrodes filling ratio upon the total organic carbon removal were evaluated and the prediction model of multivariate quadratic regression equation was acquired.The results showed that electrode distance played the most important role in total organic carbon removal,followed by impressed voltage and particle electrodes filling ratio,among which the interaction of electrode distance and the impresses voltage was remarkable.Optimized condition was obtained at 9.9V,4.2cm and 60% particle electrodes for the reactor.Under the optimal condition,98.18% of total organic carbon removal was achieved and the experimental value was in an accordance with the predicted value with 1.71% deviation.

Key words: electrochemistry, degradation, model, configuration parameters, benzothiazole, response surface methodology

摘要： 采用复极性三维电催化反应器降解苯并噻唑，通过考察三维电极反应器的结构参数，从而提高污染物处理效果的同时降低电催化反应体系的能耗。首先以反应体系的矿化率、矿化电流效率及能耗为评价指标，优化了反应器的电极型式。然后利用Design-Expert软件中的Box-Behnken响应曲面法，以外加电压、电极间距和粒子电极填充比例为自变量，TOC去除率为响应值，研究了各变量及其相互作用对TOC去除率的影响，并通过求解回归方程得到多元二次回归方程的预测模型。结果表明，电极间距和外加电压对TOC的影响最大，且电极间距和外加电压具有明显的交互性作用。预测分析最大TOC去除率为98.18%，相应的最优结构参数为：外加电压9.9V，电极间距4.2cm，粒子电极填充比60%，在最优条件下进行试验，实际值与预测值具有良好的一致性，偏差为1.71%。

关键词: 电化学, 降解, 模型, 结构参数, 苯并噻唑, 响应曲面分析法