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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。
Through the simulation of pure water, the formation of bromate catalyzed by nano-SnO2 and nano-TiO2 catalyzed by ozone oxidation and the inhibitory efficiency of nano-TiO2 under different conditions were discussed. The results show that the formation of bromate can be effectively inhibited by both nano-sized SnO 2 and nano-sized TiO 2 catalyst. The formation of bromate is reduced by 45.81% and 74.10%, respectively, compared with the single ozone oxidation condition. The effect of nano-TiO2 on the formation of bromate is more obvious with the increase of temperature. The efficiency of nano-TiO2 catalyzed to inhibit the formation of bromate increases with the increase of Br- The initial mass concentration is increased and the pH is increased.