Cross-Flow Electrochemical Separation Devices and Methods of Assembling Same

摘要

Electrochemical purification apparatuses for treating water and methods of assembling the devices are provided. The apparatuses may be cross-flow electrochemical devices. The devices may be assembled and sealed through masking and application of a potting material. The devices may comprise various structures configured to improve the current efficiency of the device, reduce leakage, and improve the distribution of potting material to the assembly.

主权项

1. An electrochemical separation apparatus, comprising:
a cell stack comprising:
a plurality of aligned cell pairs, each of the plurality of aligned cell pairs including an ion concentrating compartment constructed and arranged to provide fluid flow in a first direction and an ion diluting compartment constructed and arranged to provide fluid flow in a second direction that is different from the first direction;each of the ion concentrating compartments comprising an anion exchange membrane, a cation exchange membrane, and a first spacer positioned between the anion exchange membrane and the cation exchange membrane, the first spacer having a masked first set of end portions and a potted second set of end portions;each of the ion diluting compartments comprising an anion exchange membrane, a cation exchange membrane, and a second spacer positioned between the anion exchange membrane and the cation exchange membrane, the second spacer having a potted first set of end portions and a masked second set of end portions;the masked first set of end portions of the first spacer being aligned with the potted first set of end portions of the second spacer, and the potted second set of end portions of the first spacer being aligned with the masked second set of end portions of the second spacer;each end portion of the first and second sets of end portions defining a channel extending therethrough, each channel being in fluid communication with those spacers through whose masked end portion the channel extends, and each channel being in fluid isolation from those spacers through whose potted end portion the channel extends; a frame surrounding the cell stack to form a first module; and a housing enclosing the first module.