几种水质特性参数影响臭氧氧化过程溴酸盐生成的研究

Study on effect of several parameters of water quality on bromate formation in ozone oxidation process

通过去离子水配水的模拟试验,开展水质特性参数影响含一定浓度Br-离子的水臭氧氧化过程中溴酸盐生成量的研究。结果表明:投加不饱和有机物苯胺抑制了水中溴酸盐的生成,而投加饱和有机物酒石酸则加快了溴酸盐的生成;对氯苯甲酸能有效抑制羟基自由基生成,降低BrO_3-生成量;硬度增大,离子强度增大,水中BrO_3-的生成量增加;BrO_3-的生成量随碱度增大而增加,最后生成量增加趋于平缓。

Simulation experiments in deionized water were conducted to study the influence of water quality parameters of bromate formation during ozone oxidation for bromide-containing water under a certain bromide concentration. The result shows that as an unsaturated compound aniline in water inhibited the formation of bromate, while tartaric acid enhanced its formation as a saturated compound. Parachlorobenzoic-acid（PCBA）can effectively restrain hydroxyl radicals, thus reducing the formation amount of bromate . The Increased hardness makes the ionic strength increase, and thus enhances the formation amount of bromate. The formation amount of bromate increases with the increasing of alkalinity and fattens in the end.