Mitko Krzysztof, Laskowska Ewa, Turek Marian, Dydo Piotr, Piotrowski Krzysztof
Department of Inorganic, Analytical Chemistry and Electrochemistry, Faculty of Chemistry, Silesian University of Technology, ul. B. Krzywoustego 6, 44-100 Gliwice, Poland.
PolymemTech Sp. z o.o., Al. Niepodległości 118/90, 05-577 Warsaw, Poland.
Membranes (Basel). 2020 Oct 15;10(10):288. doi: 10.3390/membranes10100288.
Nanofiltration can be applied for the treatment of mine waters. One of the main problems is the risk of crystallization of sparingly soluble salts on the membrane surface (scaling). In this work, a series of batch-mode nanofiltration experiments of the mine waters was performed in a dead-end Sterlitech HP 4750X Stirred Cell. Based on the laboratory results, the concentration profiles of individual ions along the membrane length in a single-pass industrial-scale nanofiltration (NF) unit was calculated, assuming the tanks-in-series flow model inside the membrane module. These calculations also propose a method for estimating the maximum achievable recovery before the occurrence of the calcium sulfate dihydrate scaling in a single-pass NF 40″ length spiral wound module, simultaneously allowing metastable supersaturation of calcium sulfate dihydrate. The performance of three membrane types (NF270, NFX, NFDL) has been evaluated for the nanofiltration of mine water.
纳滤可用于矿井水的处理。其中一个主要问题是微溶盐在膜表面结晶（结垢）的风险。在这项工作中，在死端Sterlitech HP 4750X搅拌池中对矿井水进行了一系列间歇模式纳滤实验。基于实验室结果，假设膜组件内部为串联槽流模型，计算了单通道工业规模纳滤（NF）装置中沿膜长度方向各离子的浓度分布。这些计算还提出了一种方法，用于估计在单通道40英寸长的螺旋卷式膜组件中发生二水硫酸钙结垢之前可实现的最大回收率，同时允许二水硫酸钙的亚稳过饱和。对三种膜类型（NF270、NFX、NFDL）用于矿井水纳滤的性能进行了评估。
