本文讨论了一系列曝气研究，以评估填料塔和扩散曝气作为水中三卤甲烷处理和控制技术的有效性。结果表明，在填充柱中，只要有足够的填充深度和空气，无论初始浓度如何，三卤甲烷（TTHM）的总去除率都可以达到95%。填料塔的有效性取决于水温、填料介质、水的表面负荷率、填料深度和空气水比。性能与污染物（氯仿）浓度或水源无关。因此，可以根据水源中的有机物浓度估算填料塔出水中的污染物浓度。氯仿去除的理论预测高估了填料塔的实际曝气效率。 中试规模的填料塔研究提供了概念设计数据，有助于优化操作条件和选择经济高效的设计。试验柱获得的数据代表了更大满量程系统的性能，6英寸柱与15英寸柱的结果表明了这一点。在前体浓度较高的水源中，扩散曝气对TTHMs的还原效果不如填充柱曝气。当THM形成速率等于或超过从水中去除THM的速率时，较长的滞留时间是有害的。扩散曝气随着水深和空气水比的增加而改善。与单一空气源相比，沿通道分布空气并非优势。性能更多地与所用空气量有关，而不是与如何使用空气有关。 包括8个参考文献、表格、图表。

This article discusses a series of aeration studies conducted to assess the effectiveness of packed column and diffused aeration as a treatment and control technology for trihalomethanes in water. Results indicate that total trihalomethane (TTHM) removals of >95 percent can be achieved in a packed column irrespective of the initial concentration, provided that sufficient packing depth and air are available. The effectiveness of the packed column is dependent on water temperature, packing medium, surface loading rate of the water, depth of packing, and the air to water ratio. Performance was not related to the concentration of contaminant (chloroform) or to the water source. Concentrations of contaminant in the effluent from a packed column can thus be estimated from the concentration of the organic in the water source. Theoretical predictions for chloroform removal overestimated actual packed column aeration efficiency. Pilot scale packed column studies provided conceptual design data and were useful for optimizing operational conditions and choosing cost effective designs. Data obtained for pilot columns were representative of the performance of larger full scale systems as demonstrated by results for a 6-inch compared with a 15-inch column. Diffused aeration was less effective than packed column aeration for the reduction of TTHMs in a water source with a high precursor concentration. A longer detention time is deleterious when the rate of THM formation equals or exceeds the rate at which THMs are stripped from the water. Diffused aeration improved with increased water depths and air-to-water ratios. Distribution of air along a channel was not an advantage over a single air source. Performance was related more to the volume of air applied than how it was applied. Includes 8 references, tables, figures.