(19)

(11)

EP 1 765 734 A1

(12)

(43) Date of publication: 28.03.2007 Bulletin 2007/13 (21) Application number: 05715147.4 (22) Date of filing: 04.04.2005

(51) International Patent Classification (IPC):  C02F 9/14(2006.01) (86) International application number: PCT/DK2005/000229 (87) International publication number: WO 2005/095290 (13.10.2005 Gazette 2005/41)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (30) Priority: 02.04.2004 DK 200400549 (71) Applicant: Twin Water Production Int. Aps 9700 Brønderslev (DK)	(72) Inventor: BAK, Jørgen DK-9700 Brønderslev (DK) (74) Representative: Nielsen, Henrik Sten  Budde, Schou & Ostenfeld A/S Vester Sögade 10 DK-1601 Copenhagen V DK-1601 Copenhagen V (DK)