本文着重于一个初步的成本分析，比较了液相颗粒活性炭（GAC）处理和填料塔曝气（PTA）处理，以及有无空气排放控制。还讨论了成本对设计和操作变量的敏感性。对于所检查的大多数污染物，PTA似乎比液相GAC更具成本效益，即使汽提系统中需要气相GAC。包括14个参考文献、表格和图表。

This article focuses on a preliminary cost analysis that compares liquid-phase granular activated carbon (GAC) treatment with packed-tower aeration (PTA) treatment, with and without air emissions control. The sensitivity of cost to design and operating variables is also discussed. For most of the contaminants examined, PTA appears to be more cost-effective than liquid-phase GAC, even when vapor-phase GAC is required in the stripping system. Includes 14 references, tables, figures.