脱色回用水水质分析及其在毛、棉染色中的再利用研究

Quality Analysis of the Discoloured Dye Wastewater and Its Recycling Use in Cotton and Wool Dyeing

分析经废弃生物蛋白助剂絮凝沉淀脱色后的染色废水水质,研究脱色回用水作为染色介质对羊毛和棉织物染色性能的影响。分别以脱色回用水和自来水作为染色介质,选取活性染料、直接染料对棉织物进行染色,选取酸性染料、兰纳素染料、兰纳洒脱染料对羊毛条进行染色,对比其染色性能。结果表明,脱色回用水可以用作棉织物和羊毛条的染色介质,染色效果基本达到与自来水相同的水平,进而节约染色用水,减少印染废水的排放,达到节能减排的目的。

Discolouration treatment of dye wastewater is carried out via coagulation and sedimentation with finishing agent from waste bio-protein and the discoloured wastewater is analysed for its quality and reused in the dyeing of cotton with reactive and direct dyes and of wool top with acid, Lanasol and Lanaset dyes. The dyeing properties are compared with those by using running water. The results show that discoloured dye wastewater can be reused in cotton and wool dyeing and their dyeing results are basically the same as that by running water. Furthermore, it saves water, reduces dye wastewater discharge, thus achieving the goal of energy saving and emission reduction.