公开(公告)号：US20180229184A1

公开(公告)日：2018-08-16

申请号：US15751753

申请日：2015-09-17

申请人： FORWARD WATER TECHNOLOGIES

发明人： Rui RESENDES ,  Amy Marie HOLLAND ,  Timothy James CLARK ,  Brian Ernest MARIAMPILLAI ,  Robert Harold Jean DUMONT

IPC分类号： B01D61/00 ,  C02F1/44 ,  B01D1/20 ,  B01D1/14

CPC分类号： B01D61/005 ,  B01D1/14 ,  B01D1/20 ,  B01D61/002 ,  B01D63/02 ,  B01D2311/04 ,  B01D2311/06 ,  B01D2311/10 ,  B01D2311/18 ,  B01D2311/25 ,  B01D2311/2661 ,  B01D2311/2673 ,  C02F1/445 ,  C02F2103/10

摘要： The present application provides a switchable forward osmosis system, and processes thereof. In particular, this application provides a process for treating an aqueous feed stream, comprising: forward osmosis using an aqueous draw solution having a draw solute concentration of ≥20 wt %, the draw solute comprising ionized trimethylamine and a counter ion; wherein, the feed stream: (i) comprises ≥5 wt % total dissolved solids; (ii) is at a temperature of ≤20° C.; (iii) is at a temperature between ≥30° C.-≤60° C.; (iv) has an acidic pH or a basic pH; (v) comprises organic content; (vi) comprises suspended solids; (vii) or any combination of two or more of i)-v). Also provided herein are the related system and draw solution for performing the process, and various uses thereof for treating typically difficult to dewater feed streams.