公开(公告)号：US20240307823A1

公开(公告)日：2024-09-19

申请号：US18572638

申请日：2022-06-30

Applicant: BL TECHNOLOGIES, INC.

Inventor： Jianwen ZHAI ,  Xiaojun XU ,  Linglu YANG

IPC: B01D61/02 ,  B01D71/56

CPC classification number: B01D61/0271 ,  B01D61/029 ,  B01D71/56 ,  B01D2257/30 ,  B01D2311/2512 ,  B01D2325/20

Abstract: A multistage nanofiltration (NF) system for filtering a solute from a feed solution where a downstream NF stage is more permissive to the solute than an upstream NF stage. In some examples. the nanofiltration system includes a plurality of nanofiltration stages in series, where each nanofiltration stage is more permissive to the solute than the nanofiltration stage that is immediately upstream.