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Recovery of Filter Backwash Water: Ultrafiltration Hollow Fiber Membrane for Cryptosporidium Removal 过滤反冲洗水的回收:去除隐孢子虫的超滤中空纤维膜
发布日期: 1999-01-01
本文介绍了一项中试研究的结果,该研究采用了一种独特的中空纤维和系统设计,用于回收市政水厂的粗滤器反冲洗水。研究目的是:评估用中空纤维超滤法处理英格拉姆轧钢厂反冲洗水的效果,以产生(渗透)水,该水的颗粒有效减少,浊度小于0.5 NTU,并且从进入的反冲洗水中减少贾第鞭毛虫和隐孢子虫4对数;确定膜系统运行参数,如流速、系统反洗周期和反洗给水的清洗计划;在试验期间对膜系统进行挑战,在全尺寸生产装置中可以看到更高的颗粒计数,以确定膜分离过程中的任何限制;并且,为设计商用中空纤维超滤系统提供充分且一致的数据。包括2个参考文献、表格和图表。
This paper presents the results of a pilot study that employs a unique hollow fiber and system design for the recovery of primary filter backwash water from a municipal water plant. Study objectives were to: evaluate the treatment of Ingram's Mill backwash water with hollow fiber ultrafiltration to produce (permeate) water having effective particle reduction, turbidity less than 0.5 NTU's, and a 4-log reduction of Giardia and Cryptosporidium from the incoming-backwash water; establish membrane system operating parameters such as flow rates, system backwash cycle, and cleaning schedule on the backwash-feed water; challenge the membrane system during the test period, with higher particle counts than otherwise will be seen with a full-scale production plant to determine any limitations in the membrane separation process; and, produce sufficient and consistent data, for the purpose of designing a commercial hollow fiber ultrafiltration system. Includes 2 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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