US 12,030,795 B2
Desalination device and method of manufacturing such a device
Joydeep Dutta, Vällingby (SE); and Karthik Laxman Kunjali, Täby (SE)
Assigned to Stockholm Water Technology AB, Stockholm (SE)
Appl. No. 16/623,280
Filed by Stockholm Water Technology AB, Vällingby (SE)
PCT Filed Jun. 20, 2018, PCT No. PCT/EP2018/066435
§ 371(c)(1), (2) Date Dec. 16, 2019,
PCT Pub. No. WO2018/234386, PCT Pub. Date Dec. 27, 2018.
Claims priority of application No. 1750797-1 (SE), filed on Jun. 21, 2017.
Prior Publication US 2020/0180982 A1, Jun. 11, 2020
Int. Cl. C02F 1/469 (2023.01); B01D 61/42 (2006.01); B01D 63/10 (2006.01); C02F 1/46 (2023.01); C02F 1/461 (2023.01); C02F 103/08 (2006.01)
CPC C02F 1/4691 (2013.01) [B01D 61/4281 (2022.08); B01D 63/101 (2022.08); C02F 1/4604 (2013.01); C02F 1/46109 (2013.01); C02F 2001/46138 (2013.01); C02F 2001/46152 (2013.01); C02F 2103/08 (2013.01); C02F 2201/46 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A capacitive deionization device (10) comprising a first electrode (2) and a second electrode (3), the second electrode (3) opposing the first electrode (2), wherein the first electrode (2) and the second electrode (3) are separated from each other by at least one electrically non-conductive spacer (4, 4′) arranged between the first electrode and the second electrode,
wherein the device further comprises a third electrode (7) between the first electrode (2) and the second electrode (3), the third electrode (7) allowing substantially unrestricted flow of aqueous media from a first side of the third electrode facing the first electrode (2) to a second side of the third electrode facing the second electrode (3),
wherein the third electrode (7) is electrically grounded, and the first electrode (2) and the second electrode (3) are polarizable with opposite charges with respect to the third electrode (7),
wherein each one of the first electrode (2), the second electrode (3) and the third electrode (7) is made of a chemically inert and flexible material, and
wherein the first electrode (2), the second electrode (3), and the third electrode (7) are arranged in a spiral form around a longitudinal and/or common central axis such that the first electrode (2), third electrode (7) and second electrode (3) are periodically repeated along the radius in a plane perpendicular to the longitudinal and/or central axis and jointly form a substantially cylindrical structure.