定制的颗粒活性炭（GAC）可将地下水高氯酸盐水平从60-80降低 ug/L低于检测。具体来说，快速小规模柱状试验，也称为RSSCT， 结果表明，用草酸铁预加载活性炭，可以提高活性炭的吸附容量 提高了42%。当预加载的GAC被高氯酸盐饱和时，65-74% 通过对活性炭进行化学再生，可以恢复活性炭原有的吸附能力 用硼氢化钠。这种化学再生可以通过使用 水处理循环中处理过的水的一小部分。废物 来自化学再生的液流中的高氯酸盐浓度高达 7000-15000 ug/L。采用这种方法，本文中描述的模拟表明 当两张定制的GAC床与40个- 最小空床接触时间， 在第一个运行周期内，他们可以提供60-75天的水处理服务； 在化学再生之后，GAC床可以提供大约额外的30-40天 连续几次处理和再生循环的供水系统。 包括29个参考文献、表格和图表。

Tailored granular activated carbon (GAC) can reduce groundwater perchlorate levels from 60-80 ug/L to below detection. Specifically, rapid small-scale column tests, also called RSSCTs, showed that by preloading GAC with iron-oxalic acid, the GAC adsorption capacity could be improved up to 42%. When the preloaded GAC became saturated with perchlorate, 65-74% of the GAC's original adsorption capacity could be restored by chemically regenerating the GAC with sodium borohydride. This chemical regeneration could be achieved with the use of a small fraction of the water that had been processed during the water treatment cycle. The waste stream from chemical regeneration contained concentrated perchlorate levels as high as 7,000-15,000 ug/L. With this approach, the simulations described in this article indicated that when two tailored GAC beds were operated in series with a 40-min empty-bed contact time, they could provide water treatment service for 60-75 days during the first operations cycle; following chemical regeneration, the GAC beds could provide about an additional 30-40 days of water service for several successive treatment and regeneration cycles. Includes 29 references, tables, figures.