自来水公司面临的一个严重且日益频繁的问题是饮用水中的味道和气味。最常见且有问题的味道和气味之一是由2-甲基异龙脑（MIB）和反式-1,10-二甲基反式-9-十醇（geosmin）引起的霉味/土味。常见的味道和气味处理方法，如粉末活性炭、氯氧化和高锰酸钾氧化，在很大程度上对减少这些化合物无效。幸运的是，臭氧氧化后再进行生物过滤可以提供一种非常合适且有效的处理组合。臭氧氧化至少可以部分去除MIB和geosmin，但它也会造成不良的生物不稳定性。后续的生物过滤可以去除残留的MIB和geosmin，同时去除生物不稳定性。在一个大型处理厂进行的初步调查表明，臭氧氧化/生物过滤串联可以有效地将MIB浓度降低到阈值以下，而生物过滤在这种降低中起着重要作用。 包括48个参考文献、表格、图表。

A serious and increasingly frequent problem that water utilities face is the occurrence of tastes and odors in drinking water. One of the most common and problematic types of tastes and odors is the musty/earthy type caused by 2-methylisoborneol (MIB) and trans-1, 10-dimethyl-trans-9-decalol (geosmin). Common taste and odor treatment methods such as powdered activated carbon, chlorine oxidation, and potassium permanganate oxidation are largely ineffective for reducing these compounds. Fortunately, ozonation followed by biofiltration can provide a well-suited and effective treatment combination. Ozonation provides at least partial removal of MIB and geosmin, but it also creates undesirable biological instability. Subsequent biofiltration can remove residual MIB and geosmin while at the same time removing the biological instability. A preliminary investigation at a full-scale treatment plant indicates that the ozonation/biofiltration tandem can effectively reduce MIB to below threshold concentrations and that biofiltration plays an important role in this reduction. Includes 48 references, tables, figures.