US 11,926,550 B2
Removal of ozone from process streams with ultraviolet radiation
Glen P. Sundstrom, Rockford, IL (US)
Assigned to Evoqua Water Technologies LLC, Pittsburgh, PA (US)
Appl. No. 17/290,246
Filed by Evoqua Water Technologies LLC, Pittsburgh, PA (US)
PCT Filed Oct. 29, 2019, PCT No. PCT/US2019/058473
§ 371(c)(1), (2) Date Apr. 29, 2021,
PCT Pub. No. WO2020/092307, PCT Pub. Date May 7, 2020.
Claims priority of provisional application 62/752,011, filed on Oct. 29, 2018.
Prior Publication US 2021/0403358 A1, Dec. 30, 2021
Int. Cl. B01D 53/02 (2006.01); B01D 19/00 (2006.01); C02F 9/00 (2023.01); C02F 1/20 (2023.01); C02F 1/32 (2023.01); C02F 1/66 (2023.01); C02F 101/10 (2006.01); C02F 103/34 (2006.01)
CPC C02F 9/00 (2013.01) [B01D 19/0031 (2013.01); B01D 19/0063 (2013.01); B01D 19/0073 (2013.01); C02F 1/20 (2013.01); C02F 1/32 (2013.01); C02F 1/66 (2013.01); C02F 2101/10 (2013.01); C02F 2103/346 (2013.01); C02F 2209/06 (2013.01); C02F 2209/23 (2013.01); C02F 2209/24 (2013.01); C02F 2209/40 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A method comprising:
directing an aqueous solution having a first concentration of dissolved carbon dioxide and a first concentration of dissolved ozone into a vessel;
removing an amount of the dissolved carbon dioxide from the aqueous solution to produce a first effluent having a second concentration of dissolved carbon dioxide lower than the first concentration of dissolved carbon dioxide; and
irradiating the first effluent with ultraviolet light at a dosage effective to decompose a predetermined amount of the dissolved ozone in the first effluent, to produce a second effluent having a second concentration of dissolved ozone lower than the first concentration of dissolved ozone.