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Removal of Bromide and Natural Organic Matter by Anion Exchange 阴离子交换法去除溴和天然有机物
发布日期: 2008-11-01
对各种水质进行了阴离子交换脱溴的探索, 工艺配置和树脂特性。模拟天然水体 不同数量的天然有机物(NOM)、重碳酸盐、氯化物和溴化物 采用磁性离子交换树脂(MIEX)进行批量处理,以评估 树脂去除溴的有效性。碱度(碳酸氢盐)和溶解 有机碳(DOC)均能抑制含溴化物水体中的溴化物去除 浓度为100和300µg/L。还使用两阶段间歇MIEX处理水 过程两段式处理对溴化物的去除只有轻微的改善 与单阶段治疗相比,这可能是由于与高剂量药物竞争所致 模型水中氯化物的浓度。聚苯乙烯和聚苯乙烯的有效性 通过处理模型水,比较了聚丙烯酸树脂对DOC和溴化物的去除效果 使用MIEX、Ionac A-641和Amberlite IRA910树脂。两种聚苯乙烯树脂- 641 IRA910被认为对溴化物去除更有效,而MIEX树脂更有效 更有效地删除文档。包括22个参考文献、表格和图表。
Bromide removal by anion exchange was explored for various water qualities, process configurations, and resin characteristics. Simulated natural waters containing different amounts of natural organic matter (NOM), bicarbonate, chloride, and bromide were treated with a magnetic ion exchange (MIEX) resin on a batch-basis to evaluate the effectiveness of the resin for removal of bromide. Alkalinity (bicarbonate) and dissolved organic carbon (DOC) were both shown to inhibit bromide removal in waters with bromide concentrations of 100 and 300 µg/L. Water was also treated using a two-stage batch MIEX process. Two-stage treatment resulted in only a slight improvement in bromide removal compared to single-stage treatment, presumably due to competition with the high concentration of chloride in the model waters. The effectiveness of polystyrene and polyacrylic resins on DOC and bromide removal were compared by treating model waters with MIEX, Ionac A-641 and Amberlite IRA910 resins. The two polystyrene resins, A-641 and IRA910, were seen to be more effective for bromide removal, while the MIEX resin was more effective at removing DOC. Includes 22 references, table, figures.
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发布单位或类别: 美国-美国给水工程协会
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