(19)

(11)

EP 4 132 689 A1

(12)

(43) Date of publication: 15.02.2023 Bulletin 2023/07 (21) Application number: 21720986.5 (22) Date of filing: 06.04.2021

(51) International Patent Classification (IPC):  B01D 63/06(1990.01) B01D 69/10(1990.01) B01D 67/00(1990.01) B01D 69/12(1990.01) (52) Cooperative Patent Classification (CPC): B01D 63/066; B01D 69/10; B01D 69/12; B01D 67/0046; B01D 67/0041; B01D 71/024; B01D 71/02; B01D 2323/08 (86) International application number: PCT/DK2021/050097 (87) International publication number: WO 2021/204337 (14.10.2021 Gazette 2021/41)

(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: 06.04.2020 DK PA202070212 11.12.2020 DK PA202070826 (71) Applicant: LiqTech International A/S 2750 Ballerup (DK)	(72) Inventors: CANDELARIO LEAL, Victor Manuel 2750 Ballrup (DK) KAISER, Nicolaj Nyboe 2750 Ballerup (DK) ZAHRTMANN, Nanette 2750 Ballerup (DK) (74) Representative: Plougmann Vingtoft a/s  Strandvejen 70 2900 Hellerup 2900 Hellerup (DK)