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首页> 外文期刊>Journal of environmental science and health >The efficiency of electrocoagulation in treating wastewater from a dairy industry, Part Ⅰ: Iron electrodes
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The efficiency of electrocoagulation in treating wastewater from a dairy industry, Part Ⅰ: Iron electrodes

机译：电凝处理乳业废水的效率，第一部分：铁电极

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Iron electrodes were used for electrocoagulation (EC) treatment of wastewater from a dairy plant. Electrolysis time, pH, current density and distance between electrodes were considered to assess the removal efficiency of chemical oxygen demand (COD), total solids (TS) and their fractions and turbidity. Samples were collected from the effluent of a dairy plant using a sampling methodology proportional to the flow. The treatments were applied according to design factorial of half fraction with two levels of treatments and three repetitions at the central point. The optimization of parameters for treating dairy industry effluent by electrocoagulalion using iron electrodes showed that electric current application for 15 minutes, an initial sample pH close to neutral (pH 7.0) and a current density of 50 Am~(-2) resulted in a significant reduction in COD by 58%; removal of turbidity, suspended solids and volatile suspended solids by 95%; and a final treated effluent pH of approximately 9.5. Negative consequences of the type of electrode used were the emergence of an undesirable color and an increase in the proportion of dissolved solids in the treated effluent.
机译：铁电极用于奶厂废水的电凝（EC）处理。考虑电解时间，pH，电流密度和电极之间的距离，以评估化学需氧量（COD），总固体（TS）的去除效率及其分数和浊度。使用与流量成比例的采样方法从奶牛场的废水中收集样品。根据半分数的设计阶乘进行处理，并在中心点进行两个级别的处理和三个重复。铁电极电凝处理乳业废水的参数优化表明，施加电流15分钟，初始样品的pH值接近中性（pH 7.0）和电流密度50 Am〜（-2）导致显着COD减少58％；去除了95％的浊度，悬浮固体和挥发性悬浮固体;最终处理后的废水pH值约为9.5。所用电极类型的负面后果是出现了不良的颜色，并增加了处理后的废水中溶解固体的比例。

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