EP 1343730 A1 20030917 - METHOD FOR TREATING WATER CONTAINING MANGANESE
Title (en)
METHOD FOR TREATING WATER CONTAINING MANGANESE
Title (de)
VERFAHREN ZUR BEHANDLUNG VON MANGAN ENTHALTENDEM WASSER
Title (fr)
PROCEDE DE TRAITEMENT DES EAUX CONTENANT DU MANGANESE
Publication
Application
Priority
- FR 0103441 W 20011106
- FR 0014295 A 20001107
Abstract (en)
[origin: FR2816304A1] A water treatment process involves passing water over a bed of a filtering material made at least partly from manganese dioxide granules, where the granules make up at least 70% of the filter material by weight and are regenerated mechanically when necessary, periodically or when there is a predetermined loss of load. A water treatment process involves passing water over a bed of a filtering material (3) made at least partly from manganese dioxide granules having a size of 0.8-1 mm, an actual density of 3.5-4.5 and a hardness of at least 6 on the Mohs scale. The manganese dioxide granules make up at least 70% of the filter material by weight and are regenerated mechanically when necessary, periodically or when there is a predetermined loss of load. The regeneration can take the form of simple washing, using a flow of water and/or a gas such as air. Other materials in the filter bed can be sand, anthracite or active carbon granules, and the contact time with the water being treated is between 30 seconds and 10 minutes.
IPC 1-7
IPC 8 full level
B01D 24/02 (2006.01); B01D 24/46 (2006.01); B01D 39/20 (2006.01); B01J 20/28 (2006.01); C02F 1/64 (2006.01); C02F 1/00 (2006.01); C02F 1/66 (2006.01)
CPC (source: EP US)
B01D 39/2034 (2013.01 - EP US); C02F 1/64 (2013.01 - EP US); C02F 1/001 (2013.01 - EP US); C02F 1/283 (2013.01 - EP US); C02F 1/66 (2013.01 - EP US); C02F 2101/203 (2013.01 - EP US); C02F 2101/206 (2013.01 - EP US); C02F 2209/06 (2013.01 - EP US); Y10S 210/911 (2013.01 - EP US); Y10S 210/912 (2013.01 - EP US)
Citation (search report)
See references of WO 0238511A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
FR 2816304 A1 20020510; FR 2816304 B1 20030627; AU 2376502 A 20020521; CA 2427382 A1 20020516; CA 2427382 C 20090929; CN 1275879 C 20060920; CN 1478058 A 20040225; EP 1343730 A1 20030917; JP 2004521728 A 20040722; US 2004035796 A1 20040226; US 7273556 B2 20070925; WO 0238511 A1 20020516
DOCDB simple family (application)
FR 0014295 A 20001107; AU 2376502 A 20011106; CA 2427382 A 20011106; CN 01819737 A 20011106; EP 01993589 A 20011106; FR 0103441 W 20011106; JP 2002541052 A 20011106; US 41621503 A 20030911