臭氧在处理饮用水过程中会将水中的溴离子氧化生成氧化性污染物溴酸盐,因其会使实验鼠发生癌变的几率增大,被认为具有潜在致癌性,对人类的健康造成严重的威胁。溴酸盐在水中具有高溶解性和易迁移性,很难用传统的水处理工艺去除。文中介绍了饮用水中溴酸盐的污染,综述了国内外部分溴酸盐还原微生物的种类和特性以及异养和自养微生物对溴酸盐的还原机理及其优缺点,重点分析了氢自养还原微生物在溴酸盐污染水体治理中的研究进展,进一步探讨了该领域今后的研究热点与方向。
Bromate ( BrO3^- ) is an oxidized contaminant produced from bromide ( Br ) during ozonation in drinking water. It makes the cancerigenic probability to mice increasingly and it is considered to have potential carcinogenicity which may causes a serious threat to human health. Bromate with high solubility and easy migration in water is difficult to be removed by conventional water treatment technologies. This paper describes the present situation of bromate in drinking water at home and abroad, reviews part of bromate reducing microorganism’s species and the characteristics, as well as the reduction mechanism of heterotrophic and autotrophic microorganisms on bromate,including their advantages and disadvantages. Analysis of application research progress of bromate polluted water treatment by hydrogen autotrophic microbial reduction is focused on. The future key research aspects and directions in this field are also proposed.