The study aimed to expose the level of pollution owing to textile dyeing effluents and assess the coagulant efficiency of polyaluminum chloride (PAC) for treating the textile dyeing effluents. The discharged of untreated textile dyeing effluents have severely polluted water and soils, threatened the entire environment. The study analyzed the discharged and treated effluents using standard methods of analysis. The optimized parameters of the coagulant PAC were the dose, contact time, temperature, and agitation speed. The color removal efficiency study observed that the coagulant PAC removed the color from 85 to 95% of three dyeing effluents at optimum conditions. The result showed that the maximum reduction of EC, TDS, TSS, COD, BOD, Cl⁻, HCO₃⁻ and SO₄²⁻ were found to be 83.66, 85.7, 82.05, 82.05, 83.45, 66.91, 66.91 and 72.88%, respectively. It also showed that the coagulant efficiently reduced heavy metals and the highest percentage of reduction achieved was 72.7 and 98.52 for Fe and Pb, respectively, from the effluents. Hence, the PAC would be a potential coagulant for treating the textile dyeing effluents that help to build a sustainable environment.

中文翻译：

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纺织印染废水的表征及聚氯化铝处理

该研究旨在揭示由于纺织印染废水而造成的污染水平，并评估聚氯化铝（PAC）处理纺织印染废水的凝结效率。未经处理的纺织印染废水的排放严重污染了水和土壤，威胁了整个环境。该研究使用标准分析方法分析了排放和处理后的废水。凝结剂PAC的最佳参数是剂量，接触时间，温度和搅拌速度。脱色效率研究观察到，在最佳条件下，凝结剂PAC可去除三种染料流出物中85-95％的颜色。结果表明，EC，TDS，TSS，COD，BOD，Cl组成的最大降低^-，HCO ₃ ^-和SO ₄发现^2-分别为83.66、85.7、82.05、82.05、83.45、66.91、66.91和72.88％。它还表明，该混凝剂有效地还原了重金属，废水中的铁和铅的还原率最高，分别为72.7和98.52。因此，PAC将是潜在的凝结剂，用于处理有助于建立可持续环境的纺织品染色废水。