硝化作用会影响许多使用氯胺的供水设施 作为成品水的消毒剂，传统的硝化 控制策略并不总是有效的。虽然 本实用新型可从氯胺消毒改为游离氯消毒 为了控制硝化作用，产生了消毒副产物（DBPs） 通过自由氯化和硝化一样有问题。 随着氯胺化的使用增加，以满足要求 根据消毒剂/DBP规则，硝化作用将成为 更多实用程序的问题。 斯卡森回顾了历史水质数据和事件 密歇根州安阿伯市的硝化作用、水系统和 发现高pH值和低硝化发生率之间存在相关性。 如果在全尺寸运行期间，该相关性为真 提高成品水pH值的安阿伯水厂可能 这是一种相对简单的防止硝化作用的替代方法。 成功的实验促使该实用程序设置了一个操作系统 其成品水的pH值为9.3，并进行 评估高pH值影响的八年评估 硝化作用的发生和程度。pH值升高 显著改善了硝化作用的控制，但没有 彻底消除它。这一经验表明 成品水的pH值为9。 3是控制硝化作用的实际步骤， 尽管可能需要额外的控制方法 有些案子。包括32个参考文献、表格和图表。

Nitrification affects many water utilities that use chloramine as the finished water disinfectant, but traditional nitrification control strategies are not always effective. Although the utility can change from chloramine disinfection to free chlorine to control nitrification, the disinfection byproducts (DBPs) produced by free chlorination are just as problematic as the nitrification. With increased use of chloramination to meet the requirements of the Disinfectants/DBP Rule, nitrification will become an issue for more utilities. Skadsen reviewed historical water quality data and the occurrence of nitrification in the Ann Arbor, Mich., water system and saw a correlation between high pH and low occurrence of nitrification. If this correlation held true during full-scale operation at the Ann Arbor water plant, raising the pH of finished water might be a relatively simple alternative for preventing nitrification. Successful experiments prompted the utility to set an operational goal of pH 9.3 for its finished water and to conduct an eight-year assessment to evaluate the effects of the higher pH on the occurrence and degree of nitrification. The elevated pH significantly improved the control of nitrification but did not completely eliminate it. This experience indicates that raising finished water to pH 9.3 is a practical step for controlling nitrification, although additional control methods may be required in some cases. Includes 32 references, tables, figures.