液体分散染料染色废水的循环染色  

Cyclic dyeing with wastewater from liquid dispersed dyeing process

作　　者：殷连博 李家炜[1,2] 段慧敏 宋理想 陈玉霜 厉巽巽 戚栋明 YIN Lianbo;LI Jiawei;DUAN Huimin;SONG Lixiang;CHENYushuang;LI Xuxu;QI Dongming(Zhejiang Provincial Engineering Research Center for Green and Low-Carbon Dyeing&Finishing,Zhejiang Sci-Tech University,Hangzhou,Zhejiang 310018,China;Zhejiang Provincial Innovation Center of Advanced Textile Technology,Shaoxing,Zhejiang 312000,China;Zhejiang Truelove Blanket Technology Co.,Ltd.Yiwu,Zhejiang 322000,China)

机构地区：[1]浙江理工大学绿色低碳染整技术浙江省工程研究中心,浙江杭州310018 [2]浙江省现代纺织技术创新中心,浙江绍兴312000 [3]浙江真爱毯业科技有限公司,浙江义乌322000

出　　处：《纺织学报》2025年第3期131-140,共10页Journal of Textile Research

基　　金：浙江省“尖兵”研发攻关计划项目(2023C01096);绍兴市产业关键技术攻关专项项目(2024B11007);中国纺织工业联合会应用基础研究项目(J202207)。

摘　　要：针对传统粉体分散染料染涤纶织物染色水耗高、染色废水化学需氧量(COD)高等问题,通过液体分散染料染色废水循环染色,降低水耗,实现染色废水减排。以商用粉体和液体C.I.分散红60为研究对象,探究了对涤纶织物的染色动力学及其循环染色性能;通过测试上染率,染色织物的颜色参数和色牢度,证实了液体分散染料的染色废水循环染色的可行性。结果表明:与粉体C.I.分散红60相比,液体C.I.分散红60在涤纶织物上的染色速率常数、扩散系数更大、半染时间更短,其染色废水上染率、色不匀度和色牢度与常规鲜水染色相当,更适合循环染色;在10次循环染色后废水中加入COD降解剂,COD去除率达98%,可再次循环染色;利用液体C.I.分散红60循环染色废水进行液体C.I.分散蓝291涤纶染色,染色后织物色光牢度等与鲜水效果一致。使用液体分散染料染色废水循环染色,染色效果稳定,可实现节水、减排目标,符合低碳环保要求。Objective In the field of textile printing and dyeing,the huge water consumption and pollution emission have become a problem restricting the sustainable development.Currently,polyester is the largest variety of chemical fiber,and it is reported that each ton of polyester fabric dyeing consumes about 60-80 tons of water and emits a large amount of wastewater.In response to the above issues,cyclic dyeing was implemented to reduce water consumption and wastewater emission so as to achieve low-carbon and environmental protection requirements.Method The dyeing properties,dyeing kinetics,half dyeing time and diffusion coefficient of liquid C.I.Disperse Red 60 and powder C.I.Disperse Red 60 were studied.The cyclic dyeing of liquid dispersed dye dyeing wastewater was explored,and the economic analysis was also conducted.Results The results shows that the uptake rate of C.I.Disperse Red 60 on polyester fibers is relatively fast in the initial stage.With the prolongation of dyeing time,the adsorption of the dye on the fibers gradually slows down until about 60 min later when the dyeing reaches equilibrium.Liquid C.I.Dispersed Red 60 has higher dyeing rate constants,greater diffusion coefficients and shorter half-dyeing times on polyester fabrics compared to powder C.I.Disperse Red 60 at a dyeing temperature of 130℃.In addition,as cyclic dyeing progresses,the color of the dyeing residue solution gradually deepens,and the chemical oxygen demand(COD)value of the dyeing solution also progressively increases.Compared with powder dispersed dyes,liquid dispersed dyes are more suitable for dyeing wastewater recycling dyeing by means of their dyeing residue showing lighter color and lower COD.Subsequently,the organic matter in the dyeing residue is decomposed using COD degrading agent to achieve rapid degradation of COD.When the amount of COD degrading agent is added up to 6.0 g/L,the COD value of dyeing residue decreases from 2628 mg/L to 45 mg/L,and the COD removal rate in dyeing residue is above 98%.Afterwards,the dyeing resi

关 键 词：液体分散染料 循环染色 化学需氧量 减排 涤纶织物 染色动力学 残液 

分 类 号：TS193.5[轻工技术与工程—纺织化学与染整工程]