US 11,673,096 B2
Sub-block sealing for electrochemical separation devices
Michael J. Muse, Somerville, MA (US); Joshua Griffis, Ashburnham, MA (US); LI-Shiang Liang, Harvard, MA (US); Michael Shaw, Derry, NH (US); and Simon P. Dukes, Chelmsford, MA (US)
Appl. No. 16/630,226
Filed by Evoqua Water Technologies LLC, Pittsburgh, PA (US)
PCT Filed Jul. 11, 2018, PCT No. PCT/US2018/041553
§ 371(c)(1), (2) Date Jan. 10, 2020,
PCT Pub. No. WO2019/014297, PCT Pub. Date Jan. 17, 2019.
Claims priority of provisional application 62/531,030, filed on Jul. 11, 2017.
Prior Publication US 2020/0129926 A1, Apr. 30, 2020
Int. Cl. B01D 61/48 (2006.01); B01D 65/00 (2006.01); B01D 61/50 (2006.01); B01D 63/08 (2006.01); C02F 1/469 (2023.01)
CPC B01D 65/003 (2013.01) [B01D 61/50 (2013.01); B01D 63/085 (2013.01); C02F 1/4693 (2013.01); C02F 1/4695 (2013.01); B01D 2313/04 (2013.01); C02F 2201/004 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electrochemical separation device comprising:
a first electrode;
a second electrode;
a cell stack including a plurality of sub-blocks each having alternating depleting compartments and concentrating compartments disposed between the first electrode and the second electrode, each of the sub-blocks including a frame and channel portions;
an internal seal formed of a first material disposed between and in contact with the channel portions between adjacent sub-blocks in the cell stack and configured to prevent leakage between depleting compartments and concentrating compartments in the adjacent sub-blocks; and
an external seal formed of a second material having at least one material parameter different from the first material disposed between and in contact with the frames of the adjacent sub-blocks in the cell stack and configured to prevent leakage from an internal volume of the electrochemical separation device to outside of the electrochemical separation device.