Abstract In this present work, vinasse, a by-product of sugarcane industry, was examined using combined treatment methods to purify it. Electrocoagulation/flocculation, ultrafiltration were applied as pre-treatment and post-treatment, respectively. The effectiveness of combined process was evaluated based on colour, turbidity and chemical oxygen demand (COD) removal. The efficiency of electrochemical reactor was investigated according to process variables such as retention time, electrode distance and electrolyte dose. From the results, the price to treat unit vinasse is found to be 2.5 US$/m3 under optimum conditions. FT-IR analysis of sludge obtained shows the results of electro-coagulation process. Ultrafiltration as post treatment experiments showed the enhanced removal efficiency of colour (91%), turbidity (88%) and COD (85%). The results showed that electrocoagulation followed by ultrafiltration is a suitable combined technique to reduce the colour, turbidity and COD from vinasse liquid.

中文翻译：

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电凝/絮凝超滤处理甘蔗渣液

摘要 在目前的工作中，甘蔗工业的副产品酒糟使用联合处理方法对其进行纯化。分别采用电凝/絮凝、超滤作为预处理和后处理。根据颜色、浊度和化学需氧量 (COD) 去除率评估组合工艺的有效性。根据保留时间、电极距离和电解质剂量等工艺变量研究电化学反应器的效率。结果表明，在最佳条件下，处理单位酒糟的价格为 2.5 美元/立方米。获得的污泥的 FT-IR 分析显示了电凝聚过程的结果。超滤作为后处理实验表明颜色 (91%)、浊度 (88%) 和 COD (85%) 的去除效率提高。