公开(公告)号：US20190330087A1

公开(公告)日：2019-10-31

申请号：US16507626

申请日：2019-07-10

Applicant: BL TECHNOLOGIES, INC.

Inventor： Linglu Yang ,  Hai Yang ,  Wei Lu ,  John Harold Barber

IPC: C02F1/469 ,  B01D61/48

Abstract: A desalination system comprises at least one desalination cell. The at least one desalination cell comprises first and second electrodes, an anion exchange layer and a cation ion exchange layer disposed on the respective first and second electrodes, and a spacer disposed between the first and second electrodes. The at least one desalination cell further comprises an ion exchange resin disposed between the first and second electrodes. A desalination system and a method for removing ions from an aqueous stream are also presented.

公开(公告)号：US10351446B2

公开(公告)日：2019-07-16

申请号：US14349914

申请日：2012-09-19

Applicant: BL Technologies, Inc.

Inventor： Linglu Yang ,  Hai Yang ,  Wei Lu ,  John Harold Barber

IPC: B01D61/48 ,  C02F1/469

Abstract: A desalination system comprises at least one desalination cell. The at least one desalination cell comprises first and second electrodes, an anion exchange layer and a cation ion exchange layer disposed on the respective first and second electrodes, and a spacer disposed between the first and second electrodes. The at least one desalination cell further comprises an ion exchange resin disposed between the first and second electrodes. A desalination system and a method for removing ions from an aqueous stream are also presented.

公开(公告)号：US12257551B2

公开(公告)日：2025-03-25

申请号：US16978985

申请日：2019-03-12

Applicant: BL TECHNOLOGIES, INC.

Inventor： Chengqian Zhang ,  Wei Lu ,  Jiyang Xia ,  Yongchang Zheng ,  Bruce Batchelder ,  John H. Barber

IPC: B01D61/44 ,  B01D61/46 ,  B01D69/02 ,  C02F1/469 ,  B01D61/50

Abstract: A bipolar electrodialysis (BPED) cell is able to bipolar convert salt solutions into acid and base solutions. However, protons migrate through the anion exchange membranes and tend to neutralize the base solution. In a bipolar electrodialysis system described herein, multiple BPED cells are arranged to provide a multi-stage treatment system. Up to half, or up to one third, of the stages have cells with acid block anion membranes. The one or more stages with acid block anion membranes are located at the acid product output end of the system, where the acid concentration in the system is the highest. Replacing the traditional anion membranes in some of the stages with acid block anion membranes allows higher concentration products to be produced with moderate increase in energy consumption.