Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO1998049107) DEVICE FOR DEWATERING A SLURRY
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/049107 International Application No.: PCT/SE1998/000731
Publication Date: 05.11.1998 International Filing Date: 22.04.1998
Chapter 2 Demand Filed: 26.10.1998
IPC:
B01D 29/15 (2006.01) ,B01D 35/16 (2006.01) ,C02F 9/00 (2006.01) ,C02F 11/12 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
29
Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/-B01D27/170;   Filtering elements therefor
11
with bag, cage, hose, tube, sleeve or like filtering elements
13
Supported filter elements
15
arranged for inward flow filtration
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
35
Filtering devices having features not specifically covered by groups B01D24/-B01D33/, or for applications not specifically covered by groups B01D24/-B01D33/230; Auxiliary devices for filtration; Filter housing constructions
16
Cleaning-out devices
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
9
Multistep treatment of water, waste water or sewage
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
11
Treatment of sludge; Devices therefor
12
by de-watering, drying, or thickening
Applicants:
POUGUS AB [SE/SE]; Kryddstigen 19 S-802 92 Gävle, SE (AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BY, CA, CF, CG, CH, CI, CM, CN, CU, CY, CZ, DE, DK, EE, ES, FI, FR, GA, GB, GE, GH, GM, GN, GR, GW, HU, ID, IE, IL, IS, IT, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MC, MD, MG, MK, ML, MN, MR, MW, MX, NE, NL, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, SN, SZ, TD, TG, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW)
GUSTAFSSON, Bernt [SE/SE]; SE (UsOnly)
POUSETTE, Kurt [SE/SE]; SE (UsOnly)
Inventors:
GUSTAFSSON, Bernt; SE
POUSETTE, Kurt; SE
Agent:
JOHANSSON, Lars; Lars Johansson Patentbyrå AB P.O. Box 68 S-801 02 Gävle, SE
Priority Data:
9701633-129.04.1997SE
Title (EN) DEVICE FOR DEWATERING A SLURRY
(FR) DISPOSITIF DE DESHYDRATATION DES BOUES
Abstract:
(EN) A device for dewatering sludge comprises a plurality of screening means (11) that are located at different levels, said screening means comprising hole-provided tube pieces which communicate with a common manifold (12) and through which water may pass in a direction from the outside and inwards, without the solid constituents of the sludge being carried along by the water. When necessary, the screening means may be back-flushed in order to keep them clean, shut-off valves (24) acting between the differently high situated screening means with the purpose of individually interrupting the communication between the manifold (12) and the screening means (11) that land(s) up above the surface (9) of the slurry (8), according as its level sinks during a dewatering operation.
(FR) L'invention concerne un dispositif de déshydratation des boues comprenant une pluralité de moyens de tamisage (11) situés à différents niveaux. Ces moyens de tamisage comportent des tubes pourvus de trous qui communiquent avec une conduite collectrice (12) et par lesquels l'eau peut passer dans le sens extérieur/intérieur sans entraîner avec elle les constituants solides des boues. Les moyens de tamisage peuvent être rincés dans le sens inverse pour rester propres. Des valves d'arrêt (24) agissent individuellement entre les moyens de tamisage situés à différents niveaux pour interrompre la communication entre la conduite collectrice (12) et le ou les différents moyens de tamisage (11) situés au-dessus de la surface (9) des suspensions de boues (8), sachant que le niveau des boues baisse au fur et à mesure au cours de l'opération de déshydratation.
front page image
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HU, ID, 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, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, 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, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: Swedish (SV)
Also published as:
NO19995186EP0979214AU1998073536