Evaluating impact of fouling on reverse osmosis membranes performance
Evaluating impact of fouling on reverse osmosis membranes performance
复制标题
评估污垢对反渗透膜性能的影响
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
S. Chesters
中科院分区：
文献类型：
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作者：
N. Peña;S. Gallego;F. Vigo;S. Chesters
摘要：膜污染通常被定义为在膜表面形成不良沉积物，被认为是大多数咸淡水、海水和废水回收应用中的主要问题。根据垢和污染物的性质，污染过程将导致膜通量降低、压力需求增加和/或渗透电导率增加。在某些情况下，也可能发生对膜排斥性能的不可逆损害。膜污染会影响反渗透系统的效率，增加运行成本和能源消耗。尽管过去在这一领域已经做了大量的研究，但膜污染是一个极其复杂的过程，仍然没有完全了解。从历史上看，膜技术研究的一个重要组成部分一直致力于在实验中了解污染机制，这些实验旨在比较不同变量对特定污染物(天然有机物质……
Abstract Membrane fouling is commonly defined as an undesirable formation of deposits on membrane surfaces and it is considered a major problem in most brackish, seawater, and waste water reclamation applications. Depending on nature of the scale and foulant, fouling processes will lead to decreased membrane fluxes, increased pressures needs, and/or increased permeate conductivity. In some cases, irreversible damage on membrane rejection properties may also occur. Membrane fouling will adversely affect reverse osmosis systems efficiency and result in increased operational costs and energy consumption. Although extensive research has been done in this field in the past, membrane fouling is an extremely complex process and still not fully understood. Historically, an important part of research conducted in membrane technology has been dedicated to understand fouling mechanisms in experiments designed to compare the effects of different variables in the behavior of one specific foulant (natural organic matte...