磁性离子交换树脂对饮用水中高氯酸盐的去除效能

发布时间：2018-01-04 09:20

本文关键词：磁性离子交换树脂对饮用水中高氯酸盐的去除效能　出处：《中国给水排水》2015年21期 　论文类型：期刊论文

【摘要】：为了解MIEX汶树脂对高氯酸盐的去除效果及机理,研究了MIEX湟树脂投加量、pH值、初始浓度、反应时间、共存阴离子等对去除率的影响。当树脂的投加量为5 m L/L时,对Cl O-4的去除率高达94.94%。该树脂对Cl O-4的最大吸附量约为1 630μg/m L。MIEX汶树脂有很宽的pH值适用范围,强酸性条件不利于高氯酸盐的去除,而在强碱性条件下OH-会与Cl O-4形成竞争吸附。共存阴离子对MIEX汶树脂去除Cl O-4的影响依次为:Cl-NO-3CO2-3H2PO-4SO2-4;Cl O-4初始浓度越高,粒子碰撞的几率越大,去除率越高;MIEX湟树脂去除Cl O-4的过程满足准二级动力学方程。
[Abstract]:In order to understand the removal effect and mechanism of perchlorate by MIEX resin, the pH value, initial concentration and reaction time of MIEX resin were studied. The effect of co-existing anions on the removal rate is obtained when the resin is added at a dosage of 5 mL / L. The removal rate of Cl O-4 is as high as 94.94. The maximum adsorption capacity of the resin for Cl O-4 is about 1 630 渭 g / m L.MIEX resin with a wide pH range. Strong acidity is not conducive to the removal of perchlorates. However, under the condition of strong alkalinity, OH- can form competitive adsorption with ClO-4. The effect of coexisting anions on the removal of ClO-4 by MIEX resin is as follows:. Cl-NO-3CO2-3H2PO-4SO2-4; The higher the initial concentration of ClO-4, the greater the probability of particle collision and the higher the removal rate. The process of removing Cl O-4 by MIEX resin meets the quasi second order kinetic equation.
【作者单位】：上海理工大学环境与建筑学院;沧州市供水排水集团有限公司;上海浦东威立雅自来水有限公司;
【分类号】：TU991.2
【正文快照】： 据报道[1],我国多个城市的饮用水均受到不同程度的高氯酸盐污染。高氯酸盐对人体健康的主要影响为干扰甲状腺素的合成和分泌,从而影响人体正常的新陈代谢,阻碍人体正常的生长和发育,严重时对骨髓、肌肉组织产生病变影响,诱发甲状腺癌[2]。磁性离子交换树脂(MIEX湟)是以聚丙烯

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