N-亚硝二甲胺（NDMA）是一种新型消毒副产物 （DBP）问题，也是一个特别重要的问题， 因为它会影响氯胺化反应 意味着水务公司必须解决其他DBP问题。本文 展示了广泛用于凝固的阳离子聚合物是如何 也是微量NDMA的来源，它是在 用这种聚合物处理过的水被氯胺化。作者 进行这项研究是因为 在大型配电系统中测量的NDMA。没有以前的 报告了类似病例，并进行了全面研究 用于确定NDMA的来源。 这是一个新的调查领域，可能会导致 更多的研究和最终的指导方针的建立 有机聚合物在饮用水中的应用。 公用水 可以使用本文中的信息来最小化NDMA的形成 在使用阳离子有机物的氯胺化水系统中 有助于凝固的聚合物。这些发现还可能导致更多的研究 严格处理过滤器反冲洗循环流。包括24个参考文献、表格和图表。

N-Nitrosodimethylamine (NDMA) is a new disinfection byproduct (DBP) issue, and a particularly important one, because it affects chloramination, one of the principle means water utilities have for addressing other DBPs. This article shows how cationic polymers, widely used for coagulation, are also a source of trace levels of NDMA, which is formed when water treated with the polymer is chloraminated. The authors undertook this study because of elevated and variable levels of NDMA measured in a large distribution system. No previous similar cases were reported, and a comprehensive study was conducted to determine the sources of NDMA. This is a new field of investigations and will likely result in more studies and eventually the establishment of guidelines for application of organic polymers in drinking water. Water utilities can use the information in this article to minimize NDMA formation in chloraminated water systems that use cationic organic polymers to aid coagulation. The findings may also lead to more stringent treatment of filter backwash recycle streams. Includes 24 references, tables, figures.