Department of Materials Engineering, University of Concepción, Edmundo Larenas 270, Concepción, Chile.
Departament of Environmental Chemistry, Faculty of Sciences, Catholic University of the Santísima Concepción, Alonso de Ribera 2850, casilla 297, Concepción, Chile.
J Hazard Mater. 2019 Jun 5;371:705-711. doi: 10.1016/j.jhazmat.2019.03.030. Epub 2019 Mar 6.
The possibility of using electrocoagulation for efficient removal of pollutants in the industrial liquid waste of a textile industry was studied. The performance of the process was evaluated through the analysis of color, turbidity, and chemical oxygen demand (COD). The analysis was first done with the wastewater coming from the process of dyeing linen, which is the most polluting of all effluents that reach the residual effluent pool (REP). For the analysis, the MODDE 7.0 software was used to construct a statistical model. With the results obtained from this model and the experimental measurements, response surfaces were obtained. These response surfaces predicted the behavior of electrocoagulation for different values of the studied variables (pH, current density, and treatment time). Based on the obtained results, the wastewater coming from the REP was treated using the optimum values for the operational variables. After the treatment it was possible to remove 86% color, 82% turbidity, and 59% COD. It was demonstrated that reusing the treated water in the process of wool dyeing does not have a negative effect on the quality of the dyed fabric. Thus, it is possible to implement the process in the textile industry to reduce the consumption of water.
研究了利用电化学凝聚高效去除纺织工业工业废液中污染物的可能性。通过分析颜色、浊度和化学需氧量（COD）来评估该工艺的性能。首先对来自亚麻染色过程的废水进行了分析，该废水是到达剩余废水池（REP）的所有废水中最具污染性的一种。为此分析，使用了 MODDE 7.0 软件构建了一个统计模型。根据该模型和实验测量结果，得到了响应面。这些响应面预测了不同研究变量（pH 值、电流密度和处理时间）下电化学凝聚的行为。基于获得的结果，使用最佳操作变量值对 REP 废水进行了处理。处理后，可去除 86%的颜色、82%的浊度和 59%的 COD。结果表明，将处理后的水再用于羊毛染色过程不会对染色织物的质量产生负面影响。因此，在纺织工业中实施该工艺以减少水的消耗是可行的。
