(19)

(11)

EP 0 091 919 A1

(12)

(43) Date of publication: 26.10.1983 Bulletin 1983/43 (21) Application number: 82903052.0 (22) Date of filing: 14.10.1982

(51) International Patent Classification (IPC):  B01D 19/ 00( . ) C02F 3/ 10( . ) B01D 21/ 00( . ) (86) International application number: PCT/HU1982/000051 (87) International publication number: WO 1983/001613 (11.05.1983 Gazette 1983/11)

(84) Designated Contracting States: AT DE FR GB NL SE (30) Priority: 28.10.1981 HU 19810003171 (71) Applicant: NOVEX TALALMANYFEJLESZTO ES ERTEKESITO KÜLKERESKEDELMI RT. H-Budapest 1056 (HU)	(72) Inventor: GYULAVARI, Imre H-4032 Debrecen (HU)