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Journal AWWA - Using Powdered Activated Carbon: A Critical Review AWWA杂志-使用粉末活性炭:一篇批评性评论
发布日期: 1991-01-01
由于粉末活性炭(PAC)在除味觉和气味控制以外的其他用途中的性能记录很少,因此本文的目的是批判性地回顾已报告的用途(即杀虫剂和除草剂、合成有机化学品、三卤甲烷及其前体),并分析更有效地使用PAC的方法。背景信息讨论了PAC的特点和影响其性能的因素。PAC对合成有机化学品的吸附程度在很大程度上取决于被去除的化合物类型。据报道,PAC对三卤甲烷和三卤甲烷前体的去除率从差到很好不等。在选择PAC的添加点时,必须考虑混合程度、PAC与水的接触时间、PAC的停留时间,以及尽量减少处理剂和碳酸钙对吸附的干扰; 描述了提高吸附效率的各种技术。PAC的主要优势之一是其低资本成本。该项目的完整报告《用粉末活性炭控制有机化合物》由AWWA出版,订单号90581。包括74个参考文献和表格。
Because the performance of powdered activated carbon (PAC) for uses other than taste and odor control is poorly documented, the purpose of this article is to critically review uses that have been reported (i.e., pesticides and herbicides, synthetic organic chemicals, and trihalomethanes and their precursors) and to analyze means of employing PAC more efficiently. Background information discusses characteristics of PAC and factors affecting its performance. The extent of adsorption of synthetic organic chemicals on PAC is strongly dependent on the type of compound being removed. The reported removals of trihalomethanes and trihalomethane precursors by PAC range from poor to very good. In selecting the point of addition of PAC, consideration must be given to the degree of mixing, the contact time between the PAC and the water, the PAC residence time, and the minimization of interference of adsorption by treatment chemicals and calcium carbonate; various techniques for improving adsorption efficiency are described. One of the main advantages of PAC is its low capital cost. A full report of this project, "Control of Organic Compounds with Powdered Activated Carbon," is published by AWWA, order number 90581. Includes 74 references, tables.
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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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