磁性离子交换(MIEX)树脂的研究与应用现状  

Study and Application of Magnetic Ion Exchange( MIEX) Resin

作　　者：焦茹媛[1] 许志珍[2] 王东升[1] 

机构地区：[1]中国科学院生态环境研究中心环境水质学国家重点实验室,北京100085 [2]北京市劳动保护科学研究所职业安全健康重点实验室,北京100054

出　　处：《中国给水排水》2015年第6期1-6,共6页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51308008)

摘　　要：磁性离子交换(MIEX)树脂通常作为一种吸附剂去除水体中的污染物,较小的尺寸、带有磁性的性质以及简单的再生过程使其有别于传统的离子交换型树脂。在之前的研究中,MIEX树脂可高效去除DOC及溴离子,因此可以有效控制消毒副产物的生成。同时,MIEX树脂对常见微污染物和金属离子也有一定的去除。MIEX树脂与常规工艺结合,不仅可以提高对有机物的去除率,还减少了后续混凝剂或氧化剂的投加量。此外,MIEX树脂还可与混凝或活性炭工艺相结合解决制约膜工艺发展的膜污染问题。主要介绍了MIEX水处理技术的原理及其对消毒副产物前驱物、无机离子和微污染物的去除特性,并对其与常规工艺相结合做了简要介绍,对未来MIEX水处理技术的研究起到一定参考作用。Magnetic ion exchange （MIEX） is an ion exchange resin developed as an adsorbent to remove the pollutants in water. The smaller size, magnetic properties and simple regeneration process dis- tinguishes MIEX from conventional ion exchange resins. In the previous works, it is well known to re- move DOC and bromide ion, thus, it can effectively control disinfection by-products. Meanwhile, MIEX resin also has a certain removal of common micro-pollutants and metal ions. MIEX resin combined with the conventional process, not only can improve the removal rate of organic matter, but also reduce the dosage of coagulant or oxidizing agents in the following process. In addition, MIEX resin can be used with a combination of coagulation or activated carbon process to solve the membrane fouling problems which constraints the development of membrane technology. The mechanism of MIEX resin treatment and the removal of disinfection by-products precursors, inorganic ions and micro-pollutants were described. The combination of MIEX resin with the conventional processes was introduced.

关 键 词：水处理技术 MIEX树脂 污染物的去除 

分 类 号：TU991.21[建筑科学—市政工程]