EP 1701776 A4 20080806 - IN SITU TREATMENT PROCESS TO REMOVE METAL CONTAMINATION FROM GROUNDWATER
Title (en)
IN SITU TREATMENT PROCESS TO REMOVE METAL CONTAMINATION FROM GROUNDWATER
Title (de)
IN-SITU-BEHANDLUNGSVERFAHREN ZUR ENTFERNUNG VON METALLKONTAMINATION AUS GRUNDWASSER
Title (fr)
PROCEDE DE TRAITEMENT IN SITU PERMETTANT DE SUPPRIMER LA CONTAMINATION METALLIQUE DANS LES EAUX SOUTERRAINES
Publication
Application
Priority
- US 2004001093 W 20040116
- US 74172803 A 20031219
Abstract (en)
[origin: WO2005068041A1] The present invention provides a process for enhancing the metal contaminant sorption capacity of mineral compounds within a groundwater-bearing formation by manipulating the pH and the surface acidity of the mineral compounds. The process is useful in removing metal contaminants from groundwater within a groundwater-bearing formation, providing a backstop treatment for groundwater after previous water treatment, and for protection of water sources, for example well-head protection.
IPC 8 full level
B01D 15/00 (2006.01); B01J 20/30 (2006.01); B09C 1/00 (2006.01); C02F 1/42 (2006.01); C02F 1/52 (2006.01); C02F 1/66 (2006.01)
CPC (source: EP)
B01J 20/0229 (2013.01); B01J 20/06 (2013.01); B01J 20/08 (2013.01); B01J 20/103 (2013.01); B01J 20/30 (2013.01); B09C 1/002 (2013.01); B09C 1/08 (2013.01); C02F 1/5236 (2013.01); C02F 1/66 (2013.01); B09C 2101/00 (2013.01); C02F 2101/20 (2013.01); C02F 2103/06 (2013.01)
Citation (search report)
- [X] EP 0566122 A2 19931020 - WESTINGHOUSE ELECTRIC CORP [US]
- [X] NL 1005025 C1 19980720 - CORNELIS PIETER JASPERSE [NL], et al
- [A] WO 9213803 A1 19920820 - PARTEK AB [FI]
- See references of WO 2005068041A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005068041 A1 20050728; CA 2550328 A1 20050728; CA 2550328 C 20130108; EP 1701776 A1 20060920; EP 1701776 A4 20080806; ZA 200604727 B 20070328
DOCDB simple family (application)
US 2004001093 W 20040116; CA 2550328 A 20040116; EP 04702906 A 20040116; ZA 200604727 A 20060608