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Identifying the Role of Bromamines in Minimizing Bromate Formation

机译:识别溴胺在最小化溴酸盐形成中的作用

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Ozonation of bromide-containing water can result in bromate formation.rnThe USEPA established a maximum contaminant level (MCL) of 10 μg/Lrnfor bromate. There are several methods to minimize bromate formationrnincluding pH adjustment, ammonia, and chloramine-based techniques.rnBromamines are thought to be an integral part of both ammonia andrnchloramine mitigation techniques. In this study, vanillin was used as arnprobe compound to quantify the amount of bromamine formation. Thernreaction between vanillin and bromamine results in a single brominatedrnbyproduct (bromovanillin) which allows for a quantitative measurement tornbe made. Pretreatment with ammonia, free chlorine followed by ammoniarn(FCl2-NH3), and ammonia followed by free chlorine (NH3-FCl2) wererninvestigated. Varying dosages of FCl2-NH3 were applied in order tornpreform bromamine prior to ozonation. Results showed that thernchloramine-based techniques were highly effective bromate control.
机译:含溴化物的水进行臭氧处理会导致溴酸盐的形成。美国环保局(USEPA)确定溴酸盐的最大污染物水平(MCL)为10μg/ Lrn。有几种方法可以最大程度地减少溴酸盐的生成,包括pH调节,氨水和基于氯胺的技术。溴胺被认为是氨水和氯胺减缓技术不可或缺的一部分。在这项研究中,香草醛被用作arnprobe化合物来量化溴胺形成的数量。香兰素和溴胺之间的反应产生单一的溴化副产物(溴香兰素),从而可以进行定量测定。研究了用氨,游离氯,然后用氨水(FCl2-NH3)预处理,然后用氨气接着用游离氯(NH3-FCl2)预处理的方法。施加不同剂量的FCl2-NH3,以便在臭氧化之前撕碎溴胺。结果表明,基于三氯胺的技术可有效控制溴酸盐。

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