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Effect of coagulation on the size of MF and UF membrane foulants

机译：混凝对MF和UF膜污垢尺寸的影响

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摘要

Microfiltration (MF) and ultrafiltration (UF) have become common water treatment technologies for the removal of particles from natural waters. Many water utilities are now integrating MF/UF with other treatment processes to provide treatment for nonparticulate contaminants. Research is needed to understand the impact that other processes have on MF/UF performance. This study was conducted to investigate the interactions between water quality, coagulation, and membrane fouling. The study examined the fouling of MF/UF membranes by natural waters with and without coagulation by specific fractions of constituents in natural water, separated by size. This research found that the component of natural organic matter (NOM) smaller than 100 kDa contributes relatively little to fouling during filtration of either raw or coagulated water. The fraction between 1 mu m and 100 kDa contributes a significant portion of the fouling. After coagulation pretreatment, fouling due to various size fractions in the feedwater can change.
机译：微滤（MF）和超滤（UF）已成为从天然水中去除颗粒物的常见水处理技术。现在，许多自来水公司正在将MF / UF与其他处理工艺集成在一起，以对非颗粒污染物进行处理。需要进行研究以了解其他过程对MF / UF性能的影响。进行这项研究以调查水质，凝结和膜污染之间的相互作用。这项研究检查了天然水对MF / UF膜的结垢情况，有无凝结的天然水中特定比例的成分按大小分开。这项研究发现，小于100 kDa的天然有机物（NOM）成分在过滤原水或凝结水时对结垢的贡献相对较小。 1μm和100 kDa之间的分数占污垢的很大一部分。混凝预处理后，由于进水中各种尺寸的组分而引起的结垢可能会改变。

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