EP 0777528 A1 19970611 - PROCESS FOR REDUCING THE CONCENTRATION OF MULTIVALENT CATIONS IN AQUEOUS SOLUTIONS
Title (en)
PROCESS FOR REDUCING THE CONCENTRATION OF MULTIVALENT CATIONS IN AQUEOUS SOLUTIONS
Title (de)
VERFAHREN ZUR VERMINDERUNG DES MEHRWÄRTIGEN KATIONENGEHALTES IN WÄSSERIGEN LÖSUNGEN
Title (fr)
PROCEDE POUR ABAISSER LA TENEUR EN CATIONS MULTIVALENTS DE SOLUTIONS AQUEUSES
Publication
Application
Priority
- FR 9501063 W 19950808
- FR 9410318 A 19940826
Abstract (en)
[origin: WO9606677A1] The process comprises the circulation through a column of the liquid to be purified and a superabsorbent, preferably of the polyacrylic type, the rising speed of the liquid being selected so that, in the column, a superabsorbent simply swollen is in a stationary dynamic condition, while the superabsorbent charged with multivalent ions forms sediments at the base of the column. Application to the treatment of water used for rinsing parts which have been subjected to a nickeling treatment.
IPC 1-7
IPC 8 full level
C02F 1/28 (2006.01); B01J 20/26 (2006.01); B01J 47/10 (2006.01); C23C 18/16 (2006.01); C25D 21/22 (2006.01)
CPC (source: EP KR US)
B01J 47/10 (2013.01 - EP KR US); C02F 1/285 (2013.01 - KR); C23C 18/1617 (2013.01 - EP KR US); C25D 21/22 (2013.01 - EP KR US); C02F 1/285 (2013.01 - EP US); Y10S 210/912 (2013.01 - EP KR US)
Citation (search report)
See references of WO 9606677A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI NL SE
DOCDB simple family (publication)
WO 9606677 A1 19960307; AU 3168895 A 19960322; CA 2198505 A1 19960307; CN 1160362 A 19970924; EP 0777528 A1 19970611; FR 2723935 A1 19960301; FR 2723935 B1 19970103; JP H10505275 A 19980526; KR 970705438 A 19971009; US 5885462 A 19990323
DOCDB simple family (application)
FR 9501063 W 19950808; AU 3168895 A 19950808; CA 2198505 A 19950808; CN 95195683 A 19950808; EP 95927768 A 19950808; FR 9410318 A 19940826; JP 50852696 A 19950808; KR 19970701245 A 19970226; US 79346197 A 19970505