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1. (WO1997018887) METHOD FOR CLEANING AN IMMERSED-MEMBRANE FILTRATION APPARATUS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/018887 International Application No.: PCT/FR1996/001827
Publication Date: 29.05.1997 International Filing Date: 19.11.1996
Chapter 2 Demand Filed: 19.06.1997
IPC:
B01D 65/02 (2006.01) ,B01D 65/06 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
65
Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
02
Membrane cleaning or sterilisation
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
65
Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
02
Membrane cleaning or sterilisation
06
with special washing compositions
Applicants:
OTV OMNIUM DE TRAITEMENTS ET DE VALORISATION [FR/FR]; L'Aquarène 1, place Montgolfier F-94417 Saint-Maurice Cédex, FR (AllExceptUS)
ZENON ENVIRONMENTAL INC. [CA/CA]; 845 Harrington Court Burlington, Ontario L7N 3P3, CA (AllExceptUS)
COTE, Pierre [FR/FR]; FR (UsOnly)
TAZI-PAIN, Annie [FR/FR]; FR (UsOnly)
GRELIER, Patricia [FR/FR]; FR (UsOnly)
Inventors:
COTE, Pierre; FR
TAZI-PAIN, Annie; FR
GRELIER, Patricia; FR
Agent:
VIDON, Patrice; Cabinet Patrice Vidon Immeuble Germanium 80, avenue des Buttes-de-Coësmes F-35700 Rennes, FR
Priority Data:
95/1418822.11.1995FR
Title (EN) METHOD FOR CLEANING AN IMMERSED-MEMBRANE FILTRATION APPARATUS
(FR) PROCEDE DE NETTOYAGE D'UNE INSTALLATION DE FILTRATION DU TYPE A MEMBRANES IMMERGEES
Abstract:
(EN) A method for cleaning a filtration apparatus comprising a plurality of membranes immersed in at least one tank containing the effluent to be treated. According to the method, the effluent is at least partially removed from the tank to expose the membranes to the air, and at least one cleaning solution is fed through said membranes in the opposite direction to the effluent filtration flow by delivering said cleaning solution to the permeate side of said membranes.
(FR) L'invention concerne un procédé de nettoyage d'une installation de filtration du type comportant une pluralité de membranes immergées dans au moins une cuve contenant un effluent à filtrer, ledit procédé étant caractérisé en ce qu'il comprend les étapes consistant à: vidanger au moins partiellement l'effluent contenu dans ladite cuve de façon à exposer lesdites membranes à l'air; faire passer au moins une solution de nettoyage à travers lesdites membranes selon un flux inverse au flux de filtration de l'effluent, en amenant ladite solution de nettoyage du côté perméat desdites membranes.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, US, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)
Also published as:
MXPA/a/1998/004058ES2140914BRPI9611625EP0863793US6045698JP2000500392
CA2236840CA2484573DE000069604818KR1019990071569AU1996076300FR2741280