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The Effects of Chlorine Exposure on the Performance and Properties of Polyamide Reverse Osmosis Membranes 氯暴露对聚酰胺反渗透膜性能的影响
发布日期: 2005-03-01
通过膜分离工艺处理城市废水, 例如,反渗透(RO)需要对给水进行消毒。氯是 通常用于限制膜生物污染的发生。使用 氯会对聚酰胺膜有害,而聚酰胺膜会受到污染 化学侵蚀和降解。本研究的重点是调查 商用反渗透膜的固有化学耐受性 将其置于各种氯中(例如,次氯酸, 次氯酸盐离子和氯胺)在受控条件下。溶质运移 对水通量进行监测,以评估膜性能的变化 确定膜降解的总体速率。膜 然后,采用表征技术来检查这些变化 因接触氯而产生的膜特性。包括22个参考文献、表格和图表。
The treatment of municipal wastewater by membrane separation processes, such as reverse osmosis (RO) requires disinfection of the feed water. Chlorine is typically used to limit the occurrence of membrane biological fouling. The use of chlorine can be deleterious to polyamide membranes, which are subject to chemical attack and degradation. The focus of this study was to investigate intrinsic chemical tolerances of commercially available RO membranes by subjecting them to various species of chlorine (e.g., hypochlorous acid, hypochlorite ion and chloramines) under controlled conditions. Solute transport and water flux were monitored to assess changes in membrane performance to determine the overall rate of membrane degradation. Membrane characterization techniques were then employed to examine changes in the membrane properties resulting from exposure to chlorine. 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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