含溴水臭氧化过程中各溴类物质的生成和分布

王欢¹, 刘冬梅¹, 赵志伟¹, 崔福义¹, 朱琦^1,2

1.哈尔滨工业大学城市水资源与水环境国家重点实验室;2.黑龙江大学化学化工与材料学院



摘要:

为寻求控制各溴类副产物生成的有效途径,研究了含溴水在臭氧氧化过程中,Br-质量浓度和臭氧投量综合作用对溴酸盐(BrO3-)和溴代三卤甲烷生成势(THMFP-Br)生成量的影响,以及臭氧投量和臭氧接触时间对THMFP-Br、BrO3-、总有机溴(TOBr)等溴类物质分布的影响.结果表明,不同Br-质量浓度下臭氧对THMFP-Br均有去除效果,低Br-质量浓度水中臭氧投量高时才有BrO3-生成.臭氧投量对TOBr中溴元素占初始Br-比例影响显著,而对THMFP-Br影响不大.臭氧化时间延长使BrO3-生成量增加,TOBr减少.

关键词:  溴  臭氧  溴代三卤甲烷生成势  溴酸盐

DOI：10.11918/j.issn.0367-6234.2010.10.016

分类号:TU991.2

基金项目:国家自然科学基金资助项目(50808052);哈尔滨工业大学城市水资源与水环境国家重点实验室自主课题(2010TS08);哈尔滨市科技创新人才研究专项基金资助项目(2010RFLXS008)



Formation and distribution of bromine species during ozonation in filtered surface water containing bromide

WANG Huan¹, LIU Dong-mei¹, ZHAO Zhi-wei¹, CUI Fu-yi¹, ZHU Qi^1,2

1.State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,Harbin 150090,China;2.School of Chemistry and Material Sciences,Heilongjiang University,Harbin 150080,China)

Abstract:

To investigate the effects of bromide concentration and ozone dosage on the formation of brominated trihalomethane formation potential (THMFP-Br) and BrO3-in ozonation,the effects of ozone dosage and reaction time on the distribution of bromide species were studied.The results show that THMFP-Br can be removed by ozone in water with different bromide concentrations.In low bromide concentration,BrO3-is formed only in high ozone dosage.Ozone dosage has great influence on the amount of total organic bromine (TOBr) on the percent conversion of Br-,but has no obvious effect on THMFP-Br.The generated BrO3-increases and the amount of TOBr decreases with the extended reaction time of ozonation.

Key words:  bromide  ozone  brominated trihalomethane formation potential  bromate