本powerpoint演示文稿首先简要概述了认知对健康的威胁。这项研究的目的是: 通过连续监测评价硝化控制 将亚氯酸钠添加到 加利福尼亚州格伦代尔的配电系统； 确定治疗的相关费用；和 收集系统范围内应用的信息 亚氯酸盐离子对硝化作用的控制。格伦代尔示范项目 研究阶段包括:第一阶段-2006年8月1日至2007年2月12日， 向所有三个储层中添加绿泥石； 第二阶段——2007年2月13日至2007年8月15日，不添加亚氯酸盐，断点氯化；和 第三阶段——2007年8月16日至10月31日， 2007, 三个储层中都添加了绿泥石。介绍了研究地点和化学加料系统，以及所有三个阶段的结果。 第一阶段的区别 第三阶段包括: 在第一阶段，1290号和1666号水库被关闭 亚氯酸盐进料开始时完全硝化； 在第三阶段，同样的水库也被修建 受到断点氯化杀死 在开始亚氯酸盐之前，所有的氨氧化细菌（AOB） 喂养 因此，成功地控制硝化作用 绿泥石取决于从 系统通常没有AOB。介绍了可能的AOB保护机制，以及研究总结和结论，表明以下几点:传统的硝化控制方法 在分配系统中取得不一致的结果； 以及全面的、试验性的研究 美国各地的研究表明，亚氯酸盐离子可以 有效防止硝化；和 格伦代尔示范研究的结果 证明了绿泥石的有效控制 水库中的硝化作用及其分布 当它被用于一个 还没有经历严重的 硝化作用。包括8个参考文献、表格、图表。

This powerpoint presentation begins by providing a brief overview of nitification as a health threat. The objectives of the study were to: evaluate nitrification control by continuously feeding sodium chlorite to an isolated area of the Glendale, California, distribution system; determine the associated cost of that treatment; and, gather information for system-wide application of chlorite ion control of nitrification. The Glendale Demonstration Project Study Phases included the following: Phase I - Aug 1, 2006 to Feb 12, 2007, chlorite added to all three reservoirs; Phase II - Feb 13, 2007 to Aug 15, 2007, no chlorite added, breakpoint chlorination; and, Phase III - Aug 16, 2007 to October 31, 2007, chlorite added to all three reservoirs. Study location and chemical feed system are presented, along with results of all three phases. Differences between Phase I and Phase III included the following: in Phase I, reservoirs 1290 and 1666 were fully nitrified when the chlorite feed began; in Phase III, the same reservoirs had been subjected to breakpoint chlorination killing all of the ammonia oxidizing bacteria (AOB) before starting the chlorite feed; thus, successful control of nitrification with chlorite is dependent on starting with a system generally free of AOB. Possible AOB protective mechanisms are presented, along with study summary and conclusions that indicate the following: traditional methods of nitrification control have achieved inconsistent results in distribution systems; bench, pilot, demonstration, and full-scale studies across the U.S. have shown that chlorite ion can be effective for nitrification prevention; and, the results from the Glendale demonstration study proved that chlorite effectively controlled nitrification in reservoirs and the distribution system when it was used in a system that was not already undergoing severe nitrification. Includes 8 references, tables, figures.