Research Center for Environmental Quality Management, Kyoto University, 1-2 Yumihama, Otsu, Shiga 520-0811, Japan.
J Hazard Mater. 2011 Jun 15;190(1-3):897-902. doi: 10.1016/j.jhazmat.2011.04.010. Epub 2011 Apr 8.
N-Nitrosodimethylamine (NDMA) is a potent carcinogen that is formed during disinfection by chlorination or ozonation in wastewater treatment plants (WWTPs). At present, little is known about the occurrence and fate of NDMA and its formation potential (FP) during wastewater treatment. We investigated the fate of NDMA and NDMA FP in 12 WWTPs. NDMA occurred in the influents at a concentration ranging from below the limit of quantification (LOQ <10 ng/L) to 80 ng/L, and in the final discharges from below the LOQ to 73 ng/L. In three WWTPs located in industrial areas, the influent had a high NDMA FP (up to 8230 ng/L). The rate of NDMA FP reduction from influent to secondary effluent varied between 85 and 98%, regardless of treatment process. The rate of NDMA removal is due more to the influent properties than to the type of biological treatment process.
N-亚硝基二甲胺（NDMA）是一种强致癌物质，在废水处理厂（WWTP）的氯化或臭氧化消毒过程中形成。目前，人们对 NDMA 的发生和归宿及其形成潜力（FP）在废水处理过程中的情况知之甚少。我们调查了 12 个 WWTP 中 NDMA 和 NDMA FP 的归宿。NDMA 在进水口的浓度范围从低于定量下限（LOQ <10 ng/L）到 80 ng/L，在最终出水口的浓度范围从低于 LOQ 到 73 ng/L。在三个位于工业区的 WWTP 中，进水口的 NDMA FP 很高（高达 8230 ng/L）。无论处理工艺如何，从进水到二级出水的 NDMA FP 减少率在 85%至 98%之间。NDMA 的去除率更多地归因于进水特性，而不是生物处理工艺的类型。
