电絮凝-化学絮凝组合工艺处理聚酯醇解废水的研究  

Decolorization of polyester alcoholysis wastewater by combined electrocoagulation and chemical coagulation process

作　　者：陈欣 张家琳 李晓强[1] 葛明桥[1] CHEN Xin;ZHANG Jialin;LI Xiaoqiang;GE Mingqiao(Key Laboratory of Eco-Textiles,Ministry of Education,Jiangnan University,Wuxi 214122,China)

机构地区：[1]江南大学生态纺织教育部重点实验室

出　　处：《丝绸》2019年第12期28-35,共8页Journal of Silk

基　　金：国家重点研发计划项目(2016YFB0302901-3);中央高校基本科研业务费专项资金重点项目(JUSRP51723B)

摘　　要：运用电絮凝-化学絮凝组合工艺来去除聚酯醇解废水中的染料,在连续的实验装置中系统地研究了六个参数对脱色率的影响,即乙二醇质量分数、染料的初始质量浓度、化学絮凝剂用量、电解质质量浓度、电流密度和处理时间。为了探索设计参数的协同效应,使用Taguchi方法设计实验,进行方差分析(ANOVA)以评估每个设计参数对脱色率的贡献,通过边际均值图得到实验的最佳水平,并发现在所有因素中,乙二醇质量分数、染料初始质量浓度和电流密度对脱色率的贡献最大,分别为55.9%、14.8%和10.5%。此外,建立了二阶多项式回归模型来预测脱色率,相关系数R^2达到95.2%,预测模型和实验结果之间有极好的一致性。Combined electrocoagulation-chemical coagulation process was used to remove the dye from the polyester alcoholysis wastewater. The effects of six parameters including ethylene glycol content, initial concentration of dye, dose of chemical flocculant, electrolyte concentration, current density and treatment time on the decolorization rate were investigated systematically in the continuous experimental devices. In order to explore the synergistic effect of design parameters, the experiment was designed by the Taguchi method. ANOVA was used to evaluate the contribution of each design parameter to the decolorization rate, and the optimal level of the experiment was obtained by the marginal mean plot. It was found that the ethylene glycol content, initial dye concentration and current density were the major contributions to the decolorization rate among all of the factors(55.9%, 14.8% and 10.5%, respectively). In addition, a second-order polynomial regression model was proposed to predict the decolorization rate, with the correlation coefficient R^2 of 95.2%. There was excellent agreement between the prediction model and the experimental results.

关 键 词：电絮凝 化学絮凝 Taguchi方法 脱色 回归模型 

分 类 号：TS190.3[轻工技术与工程—纺织化学与染整工程]