四乙酰乙二胺活化过硫酸钠处理退浆废水中的PVA  

Treatment of desizing wastewater containing PVA by tetraacetylethylenediamine activated sodium persulfate

作　　者：边立然 董永春[2] 于宾 BIAN Liran;DONG Yongchun;YU Bin(School of Textiles Engineering,Henan University of Engineering,Zhengzhou 450007,China;School of Textiles Science and Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]河南工程学院纺织工程学院,河南郑州450007 [2]天津工业大学纺织科学与工程学院,天津300387

出　　处：《印染》2021年第11期14-17,33,共5页China Dyeing and Finishing

基　　金：河南省高等学校重点科研项目指导计划(21B540002);河南工程学院博士培育基金项目(DKJ2019025)。

摘　　要：针对PVA退浆废水可生化性差的问题,以四乙酰乙二胺(TAED)作为活化剂,过硫酸钠(SPS)作为氧化剂,构建TAED/SPS氧化体系,用于PVA的氧化降解反应中,通过ESR分析和自由基淬灭试验研究PVA的氧化降解机理。结果表明,TAED对SPS具有显著的活化作用,且几乎不受体系pH的影响。TAED/SPS体系能够使PVA大分子链发生断裂并生成不饱和中间体,该中间体随着反应的进行而逐渐消失。Aiming at the problem of poor biodegradability for desizing wastewater containing polyvinyl alcohol(PVA),TAED/SPS oxidation system is constructed with tetraacetylethylenediamine(TAED)as an activator and sodium persulfate(SPS)as an oxidant.It is used in the oxidative degradation of PVA.The oxidative degradation mechanism of PVA is studied by ESR analysis and free radical quenching test.The results show that TAED has a significant activation effect on SPS,and its activation is hardly affected by pH of the system.TAED/SPS sys⁃tem can lead to the breakage of PVA macromolecular chain and the formation of unsaturated intermediates,and they disappear with the extension of reaction time.

关 键 词：废水处理 氧化降解 聚乙烯醇 过硫酸钠 四乙酰乙二胺 

分 类 号：TS199[轻工技术与工程—纺织化学与染整工程]