Abstract The potential application of a novel continuous electrocoagulation (EC) reactor for simultaneous removal of color, chemical oxygen demand (COD), turbidity, and alkalinity from a real licorice processing wastewater was investigated. The individual and interactive effects of four key independent variables (electrolysis time, current density, NaCl concentration, and mixing intensity) was evaluated. The results suggested that color and COD removal enhances with increasing electrolysis time, current density, and mixing intensity and remains practically constant by adding higher concentrations of NaCl. The application of continuous EC process under optimal conditions, such as: electrolysis time (81.8 min), current density (350 A/m2), NaCl concentration (300 mg/L), mixing intensity (45 rpm) allows to achieve these promised removal efficiencies: 90.1 % color, 89.4 % COD, 82 % turbidity, and 73.3 % alkalinity.

中文翻译：

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一种用于处理甘草加工废水的新型单连续电絮凝工艺：使用 RSM 优化操作因素

摘要 研究了一种新型连续电凝 (EC) 反应器在同时去除实际甘草加工废水中的颜色、化学需氧量 (COD)、浊度和碱度的潜在应用。评估了四个关键自变量（电解时间、电流密度、NaCl 浓度和混合强度）的单独和交互作用。结果表明，颜色和 COD 去除率随着电解时间、电流密度和混合强度的增加而增强，并且通过添加更高浓度的 NaCl 几乎保持不变。在最佳条件下应用连续 EC 工艺，例如：电解时间（81.8 分钟）、电流密度（350 A/m2）、NaCl 浓度（300 mg/L）、混合强度（45 rpm）允许实现这些承诺的去除效率：