The influence of the multi-component composition of cotton and polyester dyeing baths was investigated in a DCMD process using a PTFE membrane, aiming to water reclamation from textile wastewater. The process was evaluated with each auxiliary, solutions combining auxiliary and dye, and residual water from pilot-scale dyeing baths. The salts used in the cotton dyeing bath did not influence the DCMD process, resulting in a similar rejection rate and permeate flux to those in dye solutions. The formic acid employed in the polyester dyeing bath resulted in high permeate fluxes but decreased the permeate quality by almost 33%. The surfactants (detergent and dispersant) demonstrated the most harmful behavior in the process, evidenced by a complete membrane wetting. An absence of synergy of the dyes and auxiliaries influencing the DCMD process was verified for the textile dyeing wastewater. This work enabled identifying the influence of each dyeing bath component in the rejection rate and permeate flux, allowing to find alternatives in mitigating the remaining gaps involving DCMD operation and the MD membranes. This work contributes to consolidating this promising technique in water reclamation from textile wastewater, encouraging research on membrane development and modification or integrated operations involving MD.

在使用 PTFE 膜的 DCMD 工艺中研究了棉和涤纶染色浴的多组分组成的影响，旨在从纺织废水中回收水。使用每种助剂、助剂和染料结合的溶液以及来自中试规模染色浴的残留水对工艺进行评估。棉染色浴中使用的盐不会影响 DCMD 过程，导致与染料溶液中的盐类似的废品率和渗透通量。聚酯染色浴中使用的甲酸导致高渗透通量，但使渗透质量降低了近 33%。表面活性剂（清洁剂和分散剂）在该过程中表现出最有害的行为，完全润湿膜就证明了这一点。对于纺织印染废水，证实了影响DCMD过程的染料和助剂没有协同作用。这项工作能够确定每个染色浴组分对截留率和渗透通量的影响，从而可以找到减少涉及 DCMD 操作和 MD 膜的剩余差距的替代方案。这项工作有助于巩固这种从纺织废水中回收水的有前途的技术，鼓励对涉及 MD 的膜开发和改性或集成操作的研究。