College of Environmental Science and Engineering/Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tong Yan Road 38, Tianjin, 300350, China.
Department of Clinical Laboratory, Tianjin Children's Hospital, Tianjin, 300074, China.
Chemosphere. 2019 Feb;217:706-714. doi: 10.1016/j.chemosphere.2018.11.066. Epub 2018 Nov 12.
Disinfection byproducts (DBPs) have attracted extensive attention due to their cytotoxicity and genotoxicity. This study investigates the effects of different ions on DBP formation during chlorination and chloramination in artificial and real water samples. Compared with chlorination, chloramination can reduce the formation of DBPs. K only reduce the formation of DBPs during chloramination. Ca forms less DBPs than Mg does during chlorination and chloramination due to the stronger binding effect. Al and their hydroxide colloids have a significant effect on DBP formation. Anions have no significant effect on DBP formation. Due to the difference between the real and artificial water samples, the large amount of NH in the real water will form chloramine during chlorination. Furthermore, the effects of different ion in the chlorination will have the same tendency during chlorination. In the wastewater with high ionic strength, the effects of salts are mostly ignored. Studying the effects of different ions on DBP formation is important in controlling the content of DBPs in the disinfection process.
消毒副产物（DBPs）因其细胞毒性和遗传毒性而受到广泛关注。本研究探讨了不同离子在人工和实际水样中氯化和氯胺化过程中对 DBPs 形成的影响。与氯化相比，氯胺化可以减少 DBPs 的形成。K 仅在氯胺化过程中减少 DBPs 的形成。与 Mg 相比，Ca 在氯化和氯胺化过程中形成的 DBPs 较少，因为 Ca 具有更强的结合作用。Al 及其氢氧化物胶体对 DBP 的形成有显著影响。阴离子对 DBPs 的形成没有显著影响。由于实际水样和人工水样之间的差异，实际水样中大量的 NH 在氯化过程中会形成氯胺。此外，不同离子在氯化过程中的影响在氯化过程中也会有相同的趋势。在离子强度高的废水中，盐的影响大多被忽略。研究不同离子对 DBPs 形成的影响对于控制消毒过程中 DBPs 的含量非常重要。
