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.
出处
《中国给水排水》
CAS
CSCD
北大核心
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)
