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High Rate Iron and Manganese Removal for Small Systems 小型系统的高铁锰去除率
发布日期: 2001-06-01
铁和锰在地壳中相对丰富,并进入许多地下水和地表水供应。这些金属会导致水变色、自养细菌(称为crenoforms)生长、氯需求增加、水泡形成,以及饮用水供应中的味道和气味。小型系统通常难以从水中去除这些化合物,因为它们没有作为主要污染物进行监管,需要大量的资本和运营投资。自1997年以来,许多大型和小型供水系统都修建了高速除铁除锰设施,大大降低了从地下水供应中去除铁和锰的资本成本和运营要求。除铁除锰中最常用的两种去除机制包括: 氧化、沉淀和过滤;吸附。本文重点介绍了如何利用吸附去除机制来设计设备,以在每分钟/平方英尺8加仑以上的负载率下实现有效去除。包括2个参考文献、表格和图表。
Iron and manganese are relatively abundant in the earth's crust and find their way into many ground and surface water supplies. These metals can result in discolored water, growth of autotrophic bacteria called crenoforms, increased chlorine demand, turbercule formation, and taste and odors in potable water supplies. Small systems often struggle with the task of removing these compounds from water because they are not regulated as primary contaminants and require extensive capital and operational investments. Since 1997, many water systems, both large and small, have constructed high-rate iron and manganese removal facilities that have significantly reduced the capital cost and operational requirements associated with removing iron and manganese from groundwater supplies. Two of the most commonly used removal mechanisms in iron and manganese removal include: oxidation, precipitation and filtration; and, adsorption. This paper focuses on the use of the adsorption removal mechanism to design facilities that achieve effective removal at loading rates of greater than 8 gallons per minute/square foot. Includes 2 references, tables, 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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