(19)

(11)

EP 2 403 808 A1

(12)

(43) Date of publication: 11.01.2012 Bulletin 2012/02 (21) Application number: 10714440.4 (22) Date of filing: 04.03.2010

(51) International Patent Classification (IPC):  C02F 1/32(2006.01) (86) International application number: PCT/EP2010/052738 (87) International publication number: WO 2010/100216 (10.09.2010 Gazette 2010/36)

(84) Designated Contracting States: 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 SE SI SK SM TR (30) Priority: 06.03.2009 SE 0950128 (71) Applicant: Wallenius Water Aktiebolag 112 51 Stockholm (SE)	(72) Inventor: JUNGSAND, Christer S-141 70 Segeltorp (SE) (74) Representative: Bergström, Johan Erik  Mindmap IPR AB P.O. Box 138 683 23 Hagfors 683 23 Hagfors (SE)