二甲基亚硝胺及其前驱物在污水处理厂中的研究进展

摘要

N-亚硝基二甲胺(NDMA)是一种具有强致癌性的亚硝胺类物质,由于可在饮用水氯化消毒过程中形成进而造成人体危害,引起了人们的高度重视.NDMA主要的前驱物质为二甲胺(DMA),含有DMA官能团的有机物质也是其前驱物质.最常用的去除NDMA的方法主要有紫外光降解(UV)、反渗透(RO)和吸附等方法,对各种方法进行综述,总结了其优缺点.此外,也论述了已被发现的NDMA 的各种前驱物质,总结了NDMA及其前驱物的去除方法,为后续研究方向提出了一定的意见.%N-nitrosodimethylamine( NDMA), a strong potent carcinogenic nitrosamine substance,can be formed during chlorination of drinking water and cause harm to human body,aroused great attention. DMA is the major precursor of NDMA, and other organic matters containing DMA functional group can also be the precursors of NDMA. The most common method used to remove NDMA is ultraviolet( UV) ,reverse os-mosis( RO) and adsorption methods, the advantages and disadvantages of these methods were reviewed. The precursors of NDMA and the methods to remove NDMA and its precursors were discussed, and the advices for the directions of sequential studies were also proposed.