磁性离子交换树脂在饮用水预处理中的应用

Application of magnetic ion exchange resin in drinking water pretreatment

磁性离子交换树脂(MIEX Resin)是水处理领域新开发的一种新型树脂,由于其在给水预处理中的良好效果,成为研究的热点。文章对MIEX Resin的基本工作原理、MIEX DOC工艺的组成和效果、MIEX DOC工艺与其它水处理工艺的联合应用情况作了简要综述。MIEXR树脂的珠粒粒径和磁性,是MIEXR树脂有别于传统树脂的最大特点,并且这两个特点使此种树脂在给水预处理中得以有效应用。MIEX DOC工艺对相对分子质量中等和小的有机物有较高的去除率,与混凝在去除有机物方面具有互补作用,磁性离子交换树脂能极大改善后续工艺的处理效果。

Magnetic ion exchange resin （MIEX@ resin） is a newly developed resin applied in drinking water treatment, since MIEX@ resin shows a good performance in feedwater pretreatment, it has received significant interests from researchers. The basic working principle, the major constituents and performance of MIEX@ DOC process, the combination application of MIEX@ DOC and other water treatment processes were summarized. It can be seen that the greatest difference between the MIEX@ resin and the traditional resin is the particle size and magnetism, and because of these two characteristics, the MIEX@ resin can be effectively applied in feedwater pretreatment. MIEX@ DOC process has higher removal effect on the organic matters with medium molecular weight or small molecular weight and shows a complementary effect on organic matter removal when be combined with coagulation process, so it can draw a conclusion that, MIEX@ resin can greatly improve the treatment efficiency of the subsequent process.