臭氧及其高级氧化工艺对消毒副产物的控制研究

Research on control of disinfection by-products by ozone and ozone-based advanced oxidation processes

饮用水处理中产生的消毒副产物(DBPs)具有致癌致突变等健康风险,且其在水中广泛存在,引起了水处理行业的广泛关注。DBPs的前体物主要是消毒前未被水处理工艺去除,且能与消毒剂反应形成DBPs的有机物或无机离子。在消毒前,通过增设新的处理工艺(如预处理或深度处理工艺)以去除DBPs前体物,是控制DBPs的有效措施。臭氧及其高级氧化工艺能够有效氧化降解部分有机污染物,所以其已经成为控制某些典型DBPs的重要工艺。综述了臭氧及其高级氧化技术对典型DBPs——三卤甲烷及卤乙酸的控制效果,详细讨论了这些技术的降解效率、机理及反应动力学,以期为微污染原水条件下DBPs的有效控制提供有益参考。

The disinfection by-products （DBPs） in drinking water treatment have been identified to be carcinogenic and mutagenie and widely exist in water. This has attracted attention in water treatment indus- try. The DBP precursors were the organic matter or inorganic ions that could not be removed before disin- fection, and could also react with disinfection drug to form DBPs. Adding new treatment process （e. g. , pre-treatment or advanced process） before disinfection was an effective measure to control DBPs. Ozone and ozone-based advanced oxidation process could effectively oxidize and degrade partial organic pollutants and they have been important processes to control some typical DBPs. This paper summarized the effects of o- zone and ozone-based advanced oxidization technologies to control the typical DBPs-THMs and HAAs and discussed the degrading efficiency, mechanism, and reaction kinetics of these technologies. This paper could provide helpful references for the effective control of DBPs in micro-polluted raw water treatment.