在新泽西州，Rockaway镇自来水公司安装了颗粒活性炭（GAC）系统，以去除突然开始污染其地下水供应的乙醚和三氯乙烯。该系统安装迅速，性能良好，但碳在越来越短的时间内耗尽。解决方案是在GAC处理之前添加一个曝气系统，以延长碳的使用寿命。随着有机污染物的流入水平降低，该镇能够单独使用曝气，并消除GAC系统的持续使用。详细介绍了GAC和曝气系统的设计、运行和性能。包括表格，数字。

In New Jersey, the Rockaway Township water utility installed a granular activated carbon (GAC) system to remove ethers and trichloroethylene that suddenly began contaminating its groundwater supplies. The system was installed expeditiously and performed well, but the carbon became exhausted within increasingly shorter periods of time. The solution was to add an aeration system prior to GAC treatment to extend the useful life of the carbon. As influent levels of the organic contaminants abated, the township was able to use aeration alone and to eliminate continuous use of the GAC system. Details on design, operation, and performance of both the GAC and aeration systems are provided. Includes table, figures.