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首页> 外文期刊>Separation and Purification Technology >Experimentation and modeling of foulant interaction and reverse osmosis membrane fouling during textile wastewater reclamation
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Experimentation and modeling of foulant interaction and reverse osmosis membrane fouling during textile wastewater reclamation

机译：纺织废水回收中污垢相互作用和反渗透膜结垢的实验与建模

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This research is focusing on study of the effect of foulant interaction between surfactant, reactive dye (anionic dye), and effluent organic matters (EfOMs) in textile wastewater on fouling of reverse osmosis (RO) membrane. The experimentation and modeling reveal that surfactant yielded highest flux decline and the change in permeate flux was influenced by the presence of foulant monomers and aggregates formed between the foulants. When the surfactant concentration was maintaining lower than the critical micelle concentration (CMC), permeate flux was influenced by its concentration. Nevertheless, an increase in surfactant concentration above CMC did not yield further flux decline because of the effect of micellisation. The aggregates composed EfOMs increased permeate flux comparing with the wastewater containing single foulant. The perceptible aggregation of dye and non-ionic surfactant increased permeate flux comparing with the wastewater containing single non-ionic surfactant. In the case of anionic surfactant, the repulsive force between anionic charge of dye and anionic surfactant resisted their aggregation therefore, the additional dye did not increased permeate flux comparing with wastewater containing single anionic surfactant. A mathematical model derived from the deposition of aggregates and monomers on the membrane surface could be used for prediction of RO permeate flux.
机译：这项研究的重点是研究纺织废水中表面活性剂，活性染料（阴离子染料）和废水有机物（EfOMs）之间的污垢相互作用对反渗透（RO）膜结垢的影响。实验和建模表明，表面活性剂产生最高的通量下降，并且渗透性通量的变化受污垢单体的存在和污垢物之间形成的聚集体的影响。当表面活性剂浓度保持低于临界胶束浓度（CMC）时，渗透通量受其浓度影响。然而，由于胶束化的作用，表面活性剂浓度的增加超过CMC不会导致通量进一步下降。与包含单一污垢的废水相比，由EfOM组成的聚集体增加了渗透通量。与包含单一非离子表面活性剂的废水相比，染料和非离子表面活性剂的明显聚集增加了渗透通量。在阴离子表面活性剂的情况下，染料的阴离子电荷与阴离子表面活性剂之间的排斥力阻止了它们的聚集，因此，与仅含一种阴离子表面活性剂的废水相比，另外的染料不会增加渗透通量。从聚集体和单体在膜表面上沉积得到的数学模型可用于预测RO渗透通量。

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