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1. WO2004022491 - DISINFECTION OF REVERSE OSMOSIS MEMBRANE

Publication Number WO/2004/022491
Publication Date 18.03.2004
International Application No. PCT/US2003/027768
International Filing Date 04.09.2003
Chapter 2 Demand Filed 31.03.2004
IPC
A61L 2/23 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
2Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
16using chemical substances
23Solid substances, e.g. granules, powders, blocks, tablets
B01D 61/04 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
02Reverse osmosis; Hyperfiltration
04Feed pretreatment
B01D 65/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
65Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
02Membrane cleaning or sterilisation
C02F 1/44 2006.01
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
44by dialysis, osmosis or reverse osmosis
C02F 1/50 2006.01
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
50by addition or application of a germicide or by oligodynamic treatment
C02F 1/76 2006.01
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
72by oxidation
76with halogens or compounds of halogens
CPC
A61L 2/18
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
2Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
16using chemical substances
18Liquid substances ; or solutions comprising solids or dissolved gases
A61L 2/23
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
2Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
16using chemical substances
23Solid substances, e.g. granules, powders, blocks, tablets
B01D 2321/168
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2321Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
16Use of chemical agents
168Use of other chemical agents
B01D 65/022
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
65Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
02Membrane cleaning or sterilisation ; ; Membrane regeneration
022Membrane sterilisation
C02F 1/441
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
44by dialysis, osmosis or reverse osmosis
441by reverse osmosis
C02F 1/50
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
50by addition or application of a germicide or by oligodynamic treatment
Applicants
  • BIOLAB, INC. [US]/[US] (AllExceptUS)
  • HARRISON, Alan, D. [US]/[US] (UsOnly)
  • SISK, Patrick [US]/[US] (UsOnly)
Inventors
  • HARRISON, Alan, D.
  • SISK, Patrick
Agents
  • WEILACHER, Robert, G.
Priority Data
60/408,09504.09.2002US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DISINFECTION OF REVERSE OSMOSIS MEMBRANE
(FR) DESINFECTION DE MEMBRANE D'OSMOSE INVERSE
Abstract
(EN)
A process for treating a reverse osmosis membrane with a biocide to kill bacteria on or in the vicinity of a membrane by contacting a reverse osmosis membrane with a halogen biocide in combined form which slowly releases halogen in a sufficient amount to disinfect the membrane and to kill any bacteria and thereby eliminate or prevent forming a biofilm on said membrane.
(FR)
La présente invention concerne un processus de traitement de membrane d'osmose inverse avec un biocide de façon à tuer les bactéries présentes sur une membrane ou dans les environs de celle-ci. Ce procédé consiste à mettre en contact une membrane d'osmose inverse avec un biocide halogène sous une forme combinée, lequel libère lentement l'halogène en quantité suffisante pour désinfecter la membrane et pour tuer toute bactérie et par suite éliminer ou prévenir la formation d'un film biologique sur cette membrane.
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