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EP 4 355 692 A1

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(43) Date of publication: 24.04.2024 Bulletin 2024/17 (21) Application number: 22706781.6 (22) Date of filing: 15.02.2022

(51) International Patent Classification (IPC):  C02F 1/00(2006.01) C02F 1/28(2006.01) B01D 27/02(2006.01) C02F 1/44(2006.01) B01D 63/02(2006.01) (52) Cooperative Patent Classification (CPC): B01D 2201/202; B01D 63/02; B01D 2313/24; B01D 2313/44; C02F 2307/04; C02F 2201/006; C02F 2201/009; C02F 1/003; C02F 1/283; C02F 1/44; C02F 2301/066; C02F 2201/003; C02F 2201/004; B01D 27/02; Y02A 20/212; B01D 61/081 (86) International application number: PCT/EP2022/053601 (87) International publication number: WO 2022/175234 (25.08.2022 Gazette 2022/34)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 18.02.2021 DE 202021100801 U (71) Applicant: BRITA SE 65232 Taunusstein (DE)	(72) Inventor: LEIFERT, Annika 65193 Wiesbaden (DE)