(19)

(11)

EP 3 856 399 A1

(12)

(43) Date of publication: 04.08.2021 Bulletin 2021/31 (21) Application number: 19867292.5 (22) Date of filing: 19.09.2019

(51) International Patent Classification (IPC):  B01D 61/44(2006.01) C02F 1/469(2006.01) B01D 71/30(2006.01) (86) International application number: PCT/US2019/051861 (87) International publication number: WO 2020/068538 (02.04.2020 Gazette 2020/14)

(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: 28.09.2018 US 201862733149 P (71) Applicant: Evoqua Water Technologies LLC Pittsburgh, PA 15222 (US)	(72) Inventors: SWANSON, Catherine FULLERTON, California 92831 (US) LOMBARDO, John PLYMOUTH, Massachusetts 02360 (US) HALL, Christopher COLORADO SPRINGS, Colorado 80921 (US) MALLMANN, Thomas Kenneth ROCKFORD, Illinois 61107 (US) (74) Representative: Murgitroyd & Company  Murgitroyd House 165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)