本文概述了加拿大一家公用事业公司在二氧化氯处理以防止味道和气味方面的经验。主要投诉是由天然有机物形成的氯酚的存在引起的。二氧化氯处理成功地消除了此类投诉，但未能（即使与粉末活性炭结合使用）完全消除因城市径流（碳氢化合物）进入城市两大处理厂之一上游河流而产生的投诉。虽然随着氧化能力的增加，味觉和气味问题显著减少，但所有投诉的消除取决于固定床活性炭处理的实施。 自二氧化氯治疗机构以来，贾第虫病暴发的发生得到了解决。包括20个参考文献、表格和图表。

A Canadian utility's experience with chlorine dioxide treatment for the prevention of tastes and odors is outlined. The chief complaint was caused by the presence of chlorophenols, formed by naturally occurring organics. Chlorine dioxide treatment successfully eliminated complaints of this type but failed (even in combination with powdered activated carbon) to eliminate completely those complaints arising from urban runoff (hydrocarbons) entering the river upstream of one of the city's two major treatment plant sites. Although significant reduction of taste and odor problems was achieved with increased oxidative power, elimination of all complaints depends on implementation of fixed-bed activated carbon treatment. The occurrence of Giardiasis outbreaks since the institution of chlorine dioxide treatment is addressed. Includes 20 references, tables, figures.