Patent ID: 9463987
Filing Date: 2016-10-11
CPC Classification: B01D,B33Y,C02F,C25B,H01F,Y10T

Claim Text:
1. A method for making a first cell stack for an electrical purification apparatus comprising: forming a first compartment by securing a first cation exchange membrane to a first anion exchange membrane at a first portion of a periphery of the first cation exchange membrane and the first anion exchange membrane to provide a first spacer assembly having a first spacer disposed between the first cation exchange membrane and the first anion exchange membrane; forming a second compartment by securing a second anion exchange membrane to a second cation exchange membrane at a first portion of a periphery of the second cation exchange membrane and the second anion exchange membrane to provide a second spacer assembly having a second spacer disposed between the second anion exchange membrane and the second cation exchange membrane; and forming a third compartment by securing the first spacer assembly to the second spacer assembly at a second portion of the periphery of the first cation exchange membrane and at a portion of the periphery of the second anion exchange membrane to provide the first cell stack having a third spacer disposed between the first spacer assembly and the second spacer assembly, each of the first compartment and the second compartment constructed and arranged to provide a direction of fluid flow in a direction different from the direction of fluid flow in the third compartment.