公开(公告)号：US20170056837A1

公开(公告)日：2017-03-02

申请号：US14841546

申请日：2015-08-31

申请人： LG CHEM, LTD. ,  LG NANOH2O, INC.

发明人： Alberto GOENAGA ,  Brett ANDERSON HOLMBERG ,  Andrew FORD ,  Amit SANKHE ,  Christopher KURTH ,  Robert BURK ,  Jin Kuk LEE ,  Jeff KOEHLER ,  Sung Yeol CHOI ,  Youngsik EOM ,  Hyungsam CHOI

IPC分类号： B01D69/12 ,  B01D63/10 ,  B01D71/60

CPC分类号： B01D69/125 ,  B01D63/10 ,  B01D69/02 ,  B01D69/141 ,  B01D71/56 ,  B01D71/60

摘要： Provided is an interfacial polymerization process for preparation of a highly permeable thin film composite membrane, which can be used for nanofiltration, forward osmosis, or reverse osmosis, particularly for use with brackish water or seawater. The process includes contacting a porous support membrane with an aqueous phase containing a polyamine to form a coated support membrane, and applying an organic phase containing a polyfunctional acid halide to the coated support membrane to interfacially polymerize the polyamine and the polyfunctional acid halide to form a discrimination layer of a thin film composite membrane, where the aqueous and/or organic phases include a flux-enhancing additive and a boron rejection-enhancing additive that includes a biguanide compound, dicarbonate compound, pentathiodicarbonate compound, or salts thereof. Also provided are the membranes prepared by the methods and reverse osmosis modules containing the membranes.

摘要翻译： 提供了用于制备高渗透性薄膜复合膜的界面聚合方法，其可用于纳滤，前向渗透或反渗透，特别是用于微咸水或海水。 该方法包括使多孔支撑膜与含有多胺的水相接触以形成涂覆的支撑膜，以及将包含多官能酰卤的有机相施加到涂覆的支撑膜上，以使聚胺和多官能酰卤形成一种 其中水相和/或有机相包括助焊剂增强添加剂和包含双胍化合物，二碳酸酯化合物，五硫代碳酸酯化合物或其盐的硼排斥增强添加剂。 还提供了通过包含膜的方法和反渗透模块制备的膜。