大孔强碱阴树脂去除饮用水中微量有机物

比较了大孔强碱阴树脂和颗粒活性炭在饮用水的深度处理中对有机物的去除效果。结果表明：(1)大孔强碱阴树脂的吸附容量比颗粒活性炭的大。在pH为8时,大孔强碱阴树脂对TOC的去除率最高。pH6～8时,对TOC的去除率没有明显的区别,而颗粒活性炭在pH为2时。对TOC的去除率最高;水温低能提高2种吸附材料的吸附容量。(2)在动态实验条件下。当流速相同,大孔强碱阴树脂的穿透时间明显比颗粒活性炭的长,大孔强碱阴树脂的制水量约是吸附床的10000倍。而颗粒活性炭却只有吸附床的4000倍。在饮用水的深度处理中,大孔强碱阴树脂可作为活性炭的最佳替代品。

Removing Trace Organic Substances from Drinking Water by Macro Porous Strong Base Anion Resin

Comparative study on adsorption characteristics of trace organic substances in deep treatment of drinking water between macro porous strong base anion resin and granular activated carbon (GAC) has been con-ducted. The result showed that the adsorption capac ity of macro porous strong base anion resin was far greater than that of GAC. The highest removal effect of TOC on macro porous strong base anion resin and GAC was at pH 8 and pH 2 respectively, but there was no distinct difference at pH6 - 8 for macro porous strong base anion resin. At lower temperature it in-creased adsorbing capacity of resin and GAC. In dy-namic experiments, when flow rate was same, the breakthrough time of resin was much longer than that of GAC, and the amount of produced water was about 10000 times but GAC only 4000 times than the adsorption bed volumes. So the resin could be used to substitute GAC in deep treatment of drinking water.