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1. (WO1998051620) PURIFICATION OF A LIQUID STREAM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/051620 International Application No.: PCT/AU1998/000334
Publication Date: 19.11.1998 International Filing Date: 08.05.1998
Chapter 2 Demand Filed: 01.12.1998
IPC:
B01D 61/48 (2006.01) ,B01J 47/08 (2006.01) ,C02F 1/42 (2006.01) ,C02F 1/469 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
61
Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
42
Electrodialysis; Electro-osmosis
44
Ion-selective electrodialysis
46
Apparatus therefor
48
having one or more compartments filled with ion-exchange material
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
47
Ion-exchange processes in general; Apparatus therefor
02
Column or bed processes
06
during which the ion-exchange material is subjected to a physical treatment, e.g. heat, electric current, irradiation, vibration
08
subjected to a direct electric current
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1
Treatment of water, waste water, or sewage
42
by ion-exchange
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1
Treatment of water, waste water, or sewage
46
by electrochemical methods
469
by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
Applicants:
USF FILTRATION AND SEPARATIONS GROUP INC. [US/US]; 2118 Greenspring Drive Timonium, MD 21093, US (AllExceptUS)
HODGES, Alastair, McIndoe [AU/AU]; AU (UsOnly)
OSVATH, Peter [AU/AU]; AU (UsOnly)
Inventors:
HODGES, Alastair, McIndoe; AU
OSVATH, Peter; AU
Agent:
BALDWIN SHELSTON WATERS; 60 Margaret Street Sydney, NSW 2000, AU
Priority Data:
PO 671509.05.1997AU (Priority Withdrawn 27.08.1999)
PO 959703.10.1997AU
PP 032411.11.1997AU
Title (EN) PURIFICATION OF A LIQUID STREAM
(FR) EPURATION D'UN COURANT DE LIQUIDE
Abstract:
(EN) Method and apparatus for purifying a liquid stream comprising at least two ion exchange material beds (17, 18), one of anion exchange material and the second of cation exchange material. The beds (17, 18) are connected at at least one point such that a junction (4) which is permeable to ions is formed therebetween. Liquid to be purified is passed serially through one bed than the other. A pair of electrodes (2, 3) is provided one each being associated with a respective material bed such that at least some ion exchange material is sandwiched between each electrode (2, 3) and the junction (4), and an electrical potential is applied across the pair of electrodes (2, 3) so as to produce an electric field therebetween and regenerate the ion exchange material (10, 11). In another form the beds may contain a mixture of anion and cation exchange material. A method of forming a junction between the beds is also disclosed.
(FR) L'invention concerne un procédé et un appareil permettant d'épurer un courant de liquide, comprenant au moins deux lits (17, 18) de matières échangeuses d'ions, un de matières échangeuses d'anions et le second de matières échangeuses de cations. Les lits (17, 18) sont reliés en au moins un point de façon à ce qu'une jonction (4), perméable aux ions, soit formée entre les deux lits. Le liquide à épurer est acheminé à travers un lit, puis l'autre. L'appareil comporte une paire d'électrodes (2, 3) dont chacune est associée à un lit respectif de matières de façon à ce qu'au moins une partie de la matière échangeuse d'ions soit en sandwich entre chaque électrode (2, 3) et la jonction (4). Un potentiel électrique est appliqué à la paire d'électrodes (2, 3) de façon à produire un champ électrique intermédiaire et à régénérer la matière échangeuse d'ions (10, 11). Selon une autre variante, les lits peuvent contenir un mélange de matières échangeuses d'anions et de cations. Un procédé de formation d'une jonction entre les lits fait aussi l'objet de cette invention.
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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: English (EN)
Also published as:
EP1027289JP2002538944 CN1273565AU1998073247