Azo dyes are widely used in textile industry due to their easy production, high stability during washing and variety of colors. It raises concern over the ecosystem because of its structural features. Some advanced oxidation process that is tertiary treatment is one of the conventional treatment methods. Pollutants that cannot be removed by primary and secondary treatment are treated by tertiary treatment methods. Primary and secondary treatment methods are not generally sufficient for removal of azo dyes. For this reason, it has an important place in its treatment with advanced oxidation processes. The aim of this study is to investigate the effect of different parameters on color and COD removal yields of triple dye mixtures by Fenton method and to optimize with the Taguchi method. Moreover, the aim is to examine the relationship between these parameters and ORP by regression analysis, and the change of organic groups by FTIR analysis in the effluent. As a result of the study, it was observed that the parameters considered had different effects on COD and color removal. There was an increase in both color and COD removal only with the increase in H₂O₂ concentration. The highest COD and color removal yields were 95.8% and 99.3%, respectively. As a conclusion, Fenton process is a method that can be preferred in the treatment of textile dyestuffs since the chemicals used are non-toxic, abundant and economical, and therefore, the operation cost of the system is quite favorable, providing advantages to compete with other advanced oxidation processes.

偶氮染料由于易于生产，在洗涤过程中具有很高的稳定性和多种颜色而被广泛用于纺织工业。由于其结构特征，它引起了对生态系统的关注。作为第三级处理的一些高级氧化工艺是常规处理方法之一。不能通过一级和二级处理去除的污染物通过三级处理方法进行处理。初级和次级处理方法通常不足以去除偶氮染料。因此，它在采用高级氧化工艺进行处理中具有重要地位。这项研究的目的是研究使用Fenton方法研究不同参数对三重染料混合物的颜色和COD去除率的影响，并使用Taguchi方法进行优化。此外，目的是通过回归分析检查这些参数与ORP之间的关系，以及通过FTIR分析检查废水中有机基团的变化。研究结果表明，所考虑的参数对化学需氧量和颜色去除有不同的影响。仅随着H的增加，颜色和COD去除率均增加₂ O ₂浓度。最高的COD和脱色率分别为95.8％和99.3％。结论是，芬顿法是一种处理纺织品染料的首选方法，因为所使用的化学药品无毒，丰富且经济，因此该系统的运行成本相当可观，具有竞争优势。其他高级氧化工艺。