Textile effluent is a highly toxic wastewater that resists conventional treatments, requiring advanced technologies for the effective removal of pollutants. A promising solution involves combining processes like coagulation-flocculation and hydrodynamic cavitation with ozone. Coagulation-flocculation, a low-cost method, enhances the effectiveness of subsequent treatments. Hydrodynamic cavitation paired with ozone is described as a synergetic oxidation process that facilitates pollutant removal and mitigates ozone-related limitations. In this study, the combination of coagulation-flocculation and hydrodynamic cavitation with ozone was evaluated. Alone, two hours of cavitation and ozone removed 45 % of apparent color and 56 % of COD, which was insufficient. Coagulation-flocculation with 700 mg L−1 of PACl yielded high pollutant removal but generated significant sludge. Using 550 mg L−1 of PGα21Ca followed by hydrodynamic cavitation and ozone achieved 94 % color, 97 % turbidity, and 84 % COD removal, meeting Brazilian disposal standards, with 86 % less sludge than PACl, highlighting its technical efficacy and potential environmental advantages.

中文翻译：

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使用混凝-絮凝和与臭氧化相关的流体动力空化反应器处理纺织品废水


纺织废水是一种剧毒废水，无法抵抗传统处理，需要先进的技术来有效去除污染物。一个有前途的解决方案是将混凝-絮凝和流体动力空化等过程与臭氧相结合。凝血-絮凝是一种低成本的方法，可增强后续治疗的有效性。流体动力空化与臭氧配对被描述为协同氧化过程，有助于去除污染物并减轻与臭氧相关的限制。在这项研究中，评估了混凝絮凝和流体动力空化与臭氧的组合。单独两个小时的空化和臭氧去除了 45% 的表观颜色和 56% 的 COD，这是不够的。用 700 mg L ⁻¹ 的 PACl 进行混凝-絮凝，去除污染物效率高，但产生大量污泥。使用 550 毫克升 ⁻¹ PGα21Ca，然后进行流体动力学空化和臭氧，实现了 94% 的着色、97% 的浊度和 84% 的 COD 去除率，符合巴西处置标准，污泥比 PACl 少 86%，突出了其技术功效和潜在的环境优势。