作为开发南加州大都会水区配水系统硝化控制方法项目的一部分，使用氯胺对氨氧化细菌（AOB）进行了分批消毒试验。本研究的目的是评估暴露于不同浓度氯胺后AOB存活和再生的能力，从而为公用事业公司提供防止硝化所需氯胺条件的一些想法。研究发现，控制硝化作用所需的氯胺浓度与温度有关。此外，无论温度或残留量如何，增加5:1的Cl2:N比是有利的，因为没有多余的氨可用于硝化菌的生长。研究结果往往代表储罐，而不是水库或动态管道系统，因为这项研究基于批量实验。

As part of a program to develop methods of controlling nitrification in the Metropolitan Water District of Southern California distribution system, batch disinfection assays were performed on ammonia-oxidizing bacteria (AOB) with the use of chloramines. The purpose of this study was to assess the ability of AOB to survive and regrow following exposure to various concentrations of chloramines and thus to provide utilities with some idea of the chloramine conditions required to prevent nitrification. The concentration of chloramines necessary to control nitrification was found to be temperature-dependent. Furthermore, regardless of temperature or residual, increasing the Cl2:N ratio of 5:1 is advantageous because no excess ammonia is available for the growth of nitrifiers. The results tend to be representative of a storage tank rather than a reservoir or dynamic pipeline system because the study was based on batch experiments.