纳米金属氧化物催化臭氧氧化抑制溴酸盐形成的效能研究  

STUDIES ON INHIBITION OF BROMATE FORMATION DURING CATALYTIC OZONATION PROCESS IN PRESENCE OF NANO-MENTAL OXIDE

作　　者：胡彩霞[1,2,3] 吴纯德[1,2,3] 梁佳莉[1,2,3] 李商国[1,2,3] 

机构地区：[1]华南理工大学环境科学与工程学院,广东广州510006 [2]2工业聚集区污染控制与生态修复教育部重点实验室,广东广州510006 [3]污染控制与生态修复广东省普通高校重点实验室,广东广州510006

出　　处：《水处理技术》2011年第7期41-44,共4页Technology of Water Treatment

基　　金：国家自然科学基金资助项目(51078148);国家水体污染控制与治理重大专项资助(2009ZX07423-003)

摘　　要：通过纯水的模拟研究,探讨了纳米SnO2和纳米TiO2催化臭氧氧化抑制溴酸盐形成的情况及不同条件下纳米TiO2的抑制效能。结果表明,纳米SnO2催化及纳米TiO2催化均能有效抑制溴酸盐的形成,相对单独臭氧氧化条件溴酸盐生成量分别降低了45.81%和74.10%;光照对纳米TiO2催化抑制溴酸盐形成的效能影响不大;反应温度在10～26℃之间时,随着温度的升高,纳米TiO2催化抑制溴酸盐形成的作用越明显;纳米TiO2催化抑制溴酸盐生成的效能随着Br-初始质量浓度的增加和pH的上升而降低。Simulation studies in pure water were conducted to investigate the inhibition of catalytic ozonation on bromate formation in the presence of nano-SnO2 and nano-TiO2.What＇s more,the different parameters affecting the inhibition of nano-TiO2,such as light condition,initial bromide concentration,reaction temperature,the pH of solution,had also been studied.It was shown that both nano-SnO2 catalytic ozonation and nano-TiO2 catalytic ozonation could inhibit the formation of bromate during ozonation process,and the inhibition ability of nano-TiO2 catalytic ozonation was found better than that of nano-SnO2.Light condition had no measurable influence on the inhibition of nano-TiO2 catalytic ozonation.Increase of reaction temperature could augment the inhibition ability of nano-TiO2 catalytic ozonation as well when temperature ranged from 10 ℃ to 26 ℃,while the rise of initial bromide concentration and pH value could impair the inhibition ability of nano-TiO2 catalytic ozonation.

关 键 词：臭氧氧化 溴酸盐 影响因素 纳米TIO2 

分 类 号：TQ031.7[化学工程] TU991.21[建筑科学—市政工程]