酰基化弱碱性树脂对高浓度含铬废水的处理应用  

Application of acylated weak base resin for treatment of highly chromium-containing wastewater

作　　者：曹飞婷[1] 刘晓宁[1] 李响[1] 魏荣卿[1] 刘涛[1] 陈晓 张利民[3] 夏明芳[3] 

机构地区：[1]南京工业大学生物与制药工程学院,江苏南京210009 [2]南京麦科菲高效分离载体有限公司,江苏南京211000 [3]江苏省环境科学研究院,江苏南京210029

出　　处：《化工学报》2009年第8期2074-2079,共6页CIESC Journal

基　　金：国家高技术研究发展计划项目(2007AA02Z200);科技部"十一五"国家科技支撑计划(2006BAK03A06)~~

摘　　要：研究了酰基化叔胺型弱碱性树脂对高浓度含铬废水的动态处理。建立了一套树脂吸附和梯度解吸工艺。叔胺型弱碱性树脂经酸洗活化后树脂的离子交换吸附性能改善明显。采用洗脱液梯度循环套用,使得高浓度的含铬废水浓缩约6倍,不仅废液可达标排放,且可实现资源回收,同时对原料树脂和重复使用的树脂进行红外和元素分析,结果表明其树脂结构和性能稳定。Acylated weak base resin was used to the treatment of highly chromium-containing wastewater. A set of technology about resin adsorption and gradient desorption was established. The ionexchange ability of the acylated weak base resin could be improved obviously by acid pickling. The application of gradient desorption made the concentration of chromium enriched for 6 times. With these techniques, the treated wastewater could meet the regulation for draining, and also the waste chromium resource could be recovered. IR and elemental analysis of the fresh and recovered resin samples indicated that the resin structure and efficiency are stable.

关 键 词：酰基化弱碱性树脂 含铬废水 梯度解吸 离子交换 资源回收 

分 类 号：TQ050.4[化学工程]