(19)

(11)

EP 2 558 420 A1

(12)

(43) Date of publication: 20.02.2013 Bulletin 2013/08 (21) Application number: 11769328.3 (22) Date of filing: 07.04.2011

(51) International Patent Classification (IPC):  C02F 3/02(2006.01) C02F 9/00(2006.01) (86) International application number: PCT/US2011/031534 (87) International publication number: WO 2011/130089 (20.10.2011 Gazette 2011/42)

(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 (30) Priority: 12.04.2010 US 758181 (71) Applicant: Veolia Water Solutions & Technologies Support 94417 Saint-Maurice Cedex (FR)	(72) Inventors: ZHAO, Hong Raleigh North Carolina 27604 (US) BROCKMANN, Martin 49525 Lengerich (DE) MOESLANG, Heribert 40878 Ratingen (DE) GIRODET, Pierre F-94410 Saint Maurice (FR) (74) Representative: Larcher, Dominique  Cabinet Vidon, 16 B, rue Jouanet, BP 90333 Technopole Atalante 35703 Rennes Cedex 7 35703 Rennes Cedex 7 (FR)