Hofman-Caris Roberta C H M
KWR Watercycle Research Institute, P O Box 1072, 3430 BB, Nieuwegein, The Netherlands.
Adv Exp Med Biol. 2017;996:241-253. doi: 10.1007/978-3-319-56017-5_20.
At first it seemed that UV processes for disinfection and advanced oxidation were "harmless", as they didn't involve the addition of "dangerous" chemicals nor seemed to result in the formation of toxic byproducts. However, recently it has become clear that also during UV processes mutagentic/genotoxic byproducts may be formed. It was found that these are nitrogen containing aromatic compounds, which are formed by the reaction of photolysis products of nitrate with (photolysis products of) natural organic matter. Now more has become clear on the formation process of these compounds, it is possible to limit or even prevent their formation during e.g. UV/HO processes. Besides, it appears to be possible to remove such byproducts by means of filtration processes. Thus, UV based processes can safely be applied in water treatment.
起初，紫外线消毒和高级氧化工艺似乎是“无害的”，因为它们既不涉及添加“危险”化学品，也似乎不会产生有毒副产物。然而，最近已经明确，即使在紫外线工艺过程中也可能形成致突变/基因毒性副产物。研究发现，这些是含氮芳香族化合物，它们是由硝酸盐的光解产物与天然有机物（的光解产物）反应形成的。随着对这些化合物形成过程的了解越来越多，在例如紫外线/羟基工艺过程中限制甚至防止它们的形成成为可能。此外，似乎可以通过过滤工艺去除此类副产物。因此，基于紫外线的工艺可以安全地应用于水处理。
