Dosage optimization of Moringa oleifera seed and traditional chemical coagulants solutions for concrete plant wastewater treatment
Dosage optimization of Moringa oleifera seed and traditional chemical coagulants solutions for concrete plant wastewater treatment
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辣木种子和传统化学混凝剂溶液在混凝土厂废水处理中的用量优化
DOI：
10.1016/j.jclepro.2017.10.311
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发表时间：
2018
影响因子：
11.1
通讯作者：
Leonardo S. Andrade
中科院分区：
文献类型：
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作者：
H. M. Paula;Marina Sangoi de Oliveira Ilha;A. P. Sarmento;Leonardo S. Andrade
本研究的目的是确定硫酸铝，氯化铁和辣木（MO）提取物，所有的溶液形式的应用程序的理想范围，用于处理混凝土厂废水。采用响应面法进行优化。基于三个自变量和五个水平，使用旋转中心复合设计，共产生20个测定。应用满意度函数，确定了混凝剂的最佳浓度范围。对理想范围进行了实验分析，并将结果与模型预测值进行了比较。混凝剂MO、硫酸铝（Al 2（SO 4）3）和氯化铁（FeCl 3）的最佳浓度分别为9.4 mL L-1、7.2 mL L-1和3.6 mL L-1，浊度降低99.9%。在混凝土厂外重新使用处理过的废水需要校正pH值、碱度和硬度。
The purpose of this study was to determine the ideal ranges for the application of aluminum sulfate, ferric chloride andMoringa oleifera(MO) extract, all in the form of solutions, for the treatment of concrete plant wastewater. This optimization was performed using the response surface methodology. A rotational central composite design was used based on three independent variables and five levels, which yielded a total of 20 assays. Applying a desirability function, were identified the optimum ranges of the coagulant concentrations. The ideal ranges were experimentally analyzed and the results compared to the predicted values by the model. The optimum concentrations of the coagulants MO, aluminum sulfate (Al2(SO4)3) and ferric chloride (FeCl3) were 9.4 mL L−1, 7.2 mL L−1and 3.6 mL L−1, respectively, with a 99.9% reduction in the turbidity. Reuse of the treated wastewater outside the concrete plant requires the correction of pH, alkalinity and hardness.