In this study, Taguchi experimental design was used to the optimize operating parameters for the degradation of paper mill effluent using electrochemical (EC) process with two-dimensional concentric aluminum tube electrodes (CATE). For this purpose, four significant experimental factors were used in four levels pH (6–9), electrolysis time (10–40 min), voltage (6–12 V) and surface area (357–624 cm²). The process parameters were optimized, through performing L16 orthogonal array of Taguchi technique, for the removal of chemical oxygen demand (COD) and turbidity. The percent COD and turbidity reductions were transferred into an accurate S/N ratio for a larger value is the better (LBT) response. The study presents a unique method of finding optimum combination of process parameters to illustrate their effect on the turbidity and COD reduction. The treatment conditions for the maximum elimination of the pollutants were second level of pH (7), third level of ET (30 min), fourth level of voltage (12 V) and second level of surface area (446 cm²). The confirmation experiment results were within the confidence intervals (CI) indicating an acceptable agreement between predicted and observed values. Based on the p-values, the electrolysis time and voltages were found to be the most significant factors for both COD and turbidity reduction. The findings of research indicated, that the Taguchi method can be used successfully for the treatment of paper industry effluent by electrochemical technique.

在本研究中，田口实验设计用于优化使用二维同心铝管电极 (CATE) 电化学 (EC) 工艺降解造纸厂废水的操作参数。为此，在四个水平 pH (6–9)、电解时间 (10–40 分钟)、电压 (6–12 V) 和表面积 (357–624 cm ² ) 中使用了四个重要的实验因素。通过田口技术L16正交阵列优化工艺参数，去除化学需氧量（COD）和浊度。 COD 和浊度降低百分比被转换为准确的信噪比，值越大越好 (LBT) 响应。该研究提出了一种寻找工艺参数最佳组合的独特方法，以说明它们对浊度和 COD 降低的影响。最大限度去除污染物的处理条件为二级pH（7）、三级ET（30 min）、四级电压（12 V）和二级表面积（446 cm ² ）。确认实验结果在置信区间 (CI) 内，表明预测值和观测值之间存在可接受的一致性。根据p值，电解时间和电压被发现是 COD 和浊度降低的最重要因素。研究结果表明，田口法可以成功地用于电化学技术处理造纸工业废水。