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天然有机物NOM是饮用水处理过程产生消毒副产物的主要前驱物质,利用膜滤法(UF)和凝胶色谱法(GPC)对佛山水源水进行分离分级,深入了解原水中有机物的分子质量分布特性和化学分布特性,为控制和去除水中NOM提供基础数据。膜滤分离结果表明,原水中相对分子质量小于6 000的有机物占比最大,平均在65%以上。利用凝胶色谱法将原水中有机物分为6类,即憎水酸(HOA)、憎水碱(HOB)、憎水中性物质(HON)、亲水酸(HIA)、亲水碱(HIB)、亲水中性物质(HIN)。分离结果表明,该6类物质在原水中分布较为均匀,其中HOA占比最大,6类有机物具有不同的分子质量分布特征。
Natural organic matter (NOM) is the main precursor for disinfection byproducts in drinking water treatment. The separation and fractionation of Foshan source water by membrane filtration (UF) and gel permeation chromatography (GPC) have made it possible to understand the molecular mass distribution characteristics of organic matter in raw water And chemical distribution characteristics, to provide basic data for the control and removal of NOM in water. The results of membrane filtration showed that the organic matter with the relative molecular mass of less than 6 000 in raw water accounted for the largest proportion with an average of over 65%. The organic matter in raw water was separated into 6 classes by gel chromatography, namely HOA, HOB, HON, HIB, , Hydrophilic neutrals (HIN). The results of separation showed that the six kinds of substances distributed more evenly in the raw water, of which HOA accounted for the largest proportion of six kinds of organic matter with different molecular weight distribution characteristics.