WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO2000029099) METHOD AND APPARATUS FOR REMOVING FLOATING SUBSTANCES AND SALTS FROM A LIQUID BY MEANS OF A MEMBRANE FILTRATION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2000/029099    International Application No.:    PCT/NL1999/000696
Publication Date: 25.05.2000 International Filing Date: 12.11.1999
Chapter 2 Demand Filed:    05.04.2000    
IPC:
B01D 61/02 (2006.01), B01D 61/04 (2006.01), B01D 65/02 (2006.01), B01D 65/08 (2006.01)
Applicants: DHV WATER B.V. [NL/NL]; Laan 1914 nr. 35 NL-3818 EX Amersfoort (NL) (For All Designated States Except US).
N.V. WATERLEIDING FRIESLAND [NL/NL]; Zaailand 106 NL-8911 BN Leeuwarden (NL) (For All Designated States Except US).
STORK FRIESLAND B.V. [NL/NL]; Stationsweg 84 NL-8401 DT Gorredijk (NL) (For All Designated States Except US).
DE MOEL, Petrus, Jacob [NL/NL]; (NL) (For US Only).
VAN DER MEER, Walterus, Gijsbertus, Joseph [NL/NL]; (NL) (For US Only).
VAN DALFSEN, Harm [NL/NL]; (NL) (For US Only)
Inventors: DE MOEL, Petrus, Jacob; (NL).
VAN DER MEER, Walterus, Gijsbertus, Joseph; (NL).
VAN DALFSEN, Harm; (NL)
Agent: PLAGGENBORG, M., B.; Octrooibureau Los & Stigter Weteringschans 96 NL-1017 XS Amsterdam (NL)
Priority Data:
1010544 13.11.1998 NL
Title (EN) METHOD AND APPARATUS FOR REMOVING FLOATING SUBSTANCES AND SALTS FROM A LIQUID BY MEANS OF A MEMBRANE FILTRATION
(FR) PROCEDE ET APPAREIL PERMETTANT D'ELIMINER LES SUBSTANCES FLOTTANTES ET LES SELS D'UN LIQUIDE AU MOYEN DE LA FILTRATION SUR MEMBRANE
Abstract: front page image
(EN)A membrane filtration, for removing floating substances and salts from a liquid uses vertically positioned capillary or tube membranes which are suitable for performing nano or hyper filtration. Repeatedly and consecutively the following steps are performed: a) a permeate is produced without discharge of concentrate for a predetermined period of time; b) then a gas, for example air, is guided along side the membrane, at least almost without discharge of permeate and without discharge of concentrate; c) and finally a concentrate is discharged without discharge of permeate. During step a) and step c) use can be made of a combined supply of liquid and gas. An apparatus for performing this method is described as well.
(FR)L'invention concerne la filtration sur membrane destinée à éliminer les substances flottantes et les sels d'un liquide, au moyen de membranes à capillaires ou à tubes placées verticalement, qui conviennent pour la nanofiltration ou l'hyperfiltration. Le procédé de l'invention consiste, de façon répétée et consécutive, à: (a) produire un perméat sans déconcentration pendant une période de temps déterminée; (b) diriger un gaz, par exemple de l'air, le long de la membrane, pratiquement sans sortie de perméat ni déconcentration; (c) et enfin à sortir un concentrat sans sortie du perméat. Au cours des étapes (a) et (c), on peut utiliser une alimentation combinée en liquide et en gaz. L'invention concerne également un appareil permettant d'exécuter ce procédé.
Designated States: AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, 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, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, 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, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)