在本研究中，研究了纳滤（NF）和反渗透的污染行为 （RO）过滤含有无机胶体和 对材料和溶解有机物（DOM）进行了研究。污垢实验 在NF和RO的错流过滤系统中进行了系统的试验 膜来确定DOM化合物和胶体之间的相互作用 材料会影响污染过程，从而影响膜渗透通量。两个有机的 具有独特吸附性能的大分子、右旋糖酐和牛血清白蛋白 （BSA），用作模型DOM化合物。在所有情况下，总流量都会下降 研究了同时含有无机胶体物质和DOM的给水污染 显著高于单个污染物贡献的总和。二 分析了复合污染中产生协同效应的不同机理 鉴定:阻碍反向扩散和大分子介导的胶体相互作用。 控制机制取决于有机大分子的类型。也是 发现复合污染层的物理性质及其对环境的影响 膜通量和盐截留率在很大程度上取决于膜的盐截留率。包括8个参考文献、表格、图表。

In this study, the fouling behavior of nanofiltration (NF) and reverse osmosis (RO) membranes during filtration of feed water containing both inorganic colloidal materials and dissolved organic matter (DOM) was investigated. Fouling experiments were systematically performed in a cross-flow filtration system with both NF and RO membranes to determine how interactions between DOM compounds and colloidal materials affect the fouling process and hence membrane permeate flux. Two organic macromolecules of distinct adsorptive properties, dextran and bovine serum albumin (BSA), were used as model DOM compounds. In all cases, flux decline in combined fouling by feed waters containing both inorganic colloidal materials and DOM was significantly higher than the additive sum of contributions from individual foulants. Two different mechanisms causing the observed synergistic effect in combined fouling were identified: hindered back diffusion and macromolecule mediated colloidal interaction. The controlling mechanism depends on the type of organic macromolecules. It was also found that the physical properties of the combined fouling layer and its impact on membrane flux and salt rejection highly depend on the salt rejection of the membrane. Includes 8 references, tables, figures.