本研究对混凝/絮凝/沉淀过程进行了实验室模拟，以确定胺基聚电解质是否是形成N-亚硝二甲胺（NDMA）的胺前体的来源。对几种聚合物进行了测试，本文讨论了两种阳离子聚合物[聚二烯丙基甲基氯化铵（Polydadamac）和环氧氯丙烷二甲胺（Epi DMA）]和一种非离子聚合物[聚丙烯酰胺]的结果。考虑到亚硝化的经典形成途径，选择了试验条件。亚硝酸盐和氯剂量的影响也进行了检查。聚合物结构中胺的存在并不能保证NDMA的形成；因此，必须检查聚合物的结构。在模拟的混凝/絮凝/沉淀过程中使用polyDADMAC和Epi DMA会导致显著的NDMA形成，而使用聚丙烯酰胺时，NDMA浓度低于检测值。 当polyDADMAC和Epi DMA剂量增加时，NDMA浓度增加。研究的其他因素对产生的NDMA浓度没有独立影响，但有证据表明，使用polyDADMAC时，亚硝酸盐浓度、聚合物剂量和氯浓度之间存在相互作用。包括26个参考文献、表格和图表。

Bench-scale simulations of the coagulation/flocculation/sedimentation process were performed in this study to determine if amine-based polyelectrolytes were a source of amine precursor for the formation of N-nitrosodimethylamine (NDMA). Several polymers have been tested, and results for two cationic polymers [polydiallylmethylammonium chloride (polyDADMAC) and epichlorohydrin-dimethylamine (Epi-DMA)] and one nonionic polymer [polyacrylamide] are discussed in this paper. Test conditions were chosen in consideration of the classic formation pathway of nitrosation. The effect of nitrite and chlorine dose were also examined. The presence of amine in polymer structure does not guarantee NDMA formation; therefore, the polymer structure must be examined. The use of polyDADMAC and Epi-DMA in simulated coagulation/flocculation/sedimentation processes resulted in significant NDMA formation, while NDMA concentrations were below detection when polyacrylamide was used. NDMA concentrations increased when polyDADMAC and Epi-DMA doses were increased. The other factors studied did not have independent effects on the resulting NDMA concentrations, but there was evidence of an interaction between nitrite concentration, polymer dose, and chlorine concentration when polyDADMAC was used. Includes 26 references, tables, figures.