EP 1001911 A1 20000524 - METHOD OF TREATING SOLVENT-CONTAINING PROCESS LIQUIDS
Title (en)
METHOD OF TREATING SOLVENT-CONTAINING PROCESS LIQUIDS
Title (de)
VERFAHREN ZUR AUFBEREITUNG VON LÖSEMITTEHALTIGEN PROZESSFLÜSSIGKEITEN
Title (fr)
PROCEDE DE TRAITEMENT DE LIQUIDES DE TRAITEMENT CONTENANT DES SOLVANTS
Publication
Application
Priority
- EP 98936427 A 19980716
- EP 9804422 W 19980716
- EP 97112200 A 19970717
Abstract (en)
[origin: EP0891950A1] The present invention relates to a method of obtaining a solvent-containing concentrate from used rinsing liquids from the paint processing industry which comprise solids fractions, organic solvents and water by: a) separating the rinsing liquid (1) by ultrafiltration (2) into a retentate (3) and a permeate (5), b) separating the ultrafiltration permeate (5) by reverse osmosis (6) into a solvent-containing concentrate (7) and into a permeate (9) which is substantially free of organic solvents, and c) separately removing (4, 8, 10) the ultrafiltration retentate (3), the solvent-containing concentrate (7) from the reverse osmosis (6), and the reverse osmosis permeate (9).
IPC 1-7
IPC 8 full level
B01D 61/04 (2006.01); B01D 61/58 (2006.01); C02F 1/44 (2006.01)
CPC (source: EP)
B01D 61/04 (2013.01); B01D 61/58 (2013.01); C02F 1/441 (2013.01); C02F 1/444 (2013.01); B01D 61/025 (2013.01); B01D 61/145 (2013.01); C02F 1/448 (2013.01); C02F 2103/14 (2013.01)
Citation (search report)
See references of WO 9903786A1
Designated contracting state (EPC)
AT BE DE ES FI FR GB IT NL PT SE
DOCDB simple family (publication)
EP 0891950 A1 19990120; AU 8542598 A 19990210; EP 1001911 A1 20000524; WO 9903786 A1 19990128
DOCDB simple family (application)
EP 97112200 A 19970717; AU 8542598 A 19980716; EP 9804422 W 19980716; EP 98936427 A 19980716