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1. WO1996004069 - MEMBRANE

Publication Number WO/1996/004069
Publication Date 15.02.1996
International Application No. PCT/GB1995/001839
International Filing Date 02.08.1995
IPC
B01D 69/14 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
14Dynamic membranes
B01D 71/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
02Inorganic material
B01J 21/06 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
21Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
06Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
B01J 35/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35Catalysts, in general, characterised by their form or physical properties
B01J 35/06 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35Catalysts, in general, characterised by their form or physical properties
02Solids
06Fabrics or filaments
C02F 1/32 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
30by irradiation
32with ultra-violet light
CPC
B01D 2323/12
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2323Details relating to membrane preparation
12Specific ratios of components used
B01D 2325/02
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2325Details relating to properties of membranes
02Details relating to pores or pososity of the membranes
B01D 67/0041
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
67Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
0039Inorganic membrane formation
0041by agglomeration of particles in the dry state, e.g. sintering
B01D 69/141
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
14Dynamic membranes
141Heterogeneous membranes, e.g. containing dispersed material; Mixed matrix membranes
B01D 69/145
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
14Dynamic membranes
141Heterogeneous membranes, e.g. containing dispersed material; Mixed matrix membranes
145containing embedded catalysts
B01D 71/02
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
02Inorganic material
Applicants
  • NORTH WEST WATER GROUP PLC [GB/GB]; Dawson House Great Sankey Warrington WA5 3LW, GB (AllExceptUS)
  • LEWIS, David, Frank [GB/GB]; GB (UsOnly)
  • BAIRD, Graeme, John [GB/GB]; GB (UsOnly)
  • BONNICK, David, MacDonald [GB/GB]; GB (UsOnly)
  • COLQUHOUN, Howard, Matthew [GB/GB]; GB (UsOnly)
Inventors
  • LEWIS, David, Frank; GB
  • BAIRD, Graeme, John; GB
  • BONNICK, David, MacDonald; GB
  • COLQUHOUN, Howard, Matthew; GB
Agents
  • ATKINSON, Peter, Birch; Marks & Clerk Sussex House 83-85 Mosley Street Manchester M2 3LG, GB
Priority Data
9415601.502.08.1994GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MEMBRANE
(FR) MEMBRANE
Abstract
(EN)
A composite porous membrane for use in water treatment comprises an inorganic support having interstices and porous inorganic films of sintered non-metallic particles carried by the support and bridging the interstices thereof. Exterior and interior surfaces of the membrane are provided with a photocatalyst which upon irradiation with electromagnetic radiation of the appropriate wavelength is effective oxidatively to decompose organic materials in water. The preferred photocatalyst is the anatase form of titania.
(FR)
Une membrane poreuse composite destinée à être utilisée dans le traitement des eaux est constituée d'un support inorganique présentant des interstices reliés entre eux par des films inorganiques poreux en particules non métalliques frittées. Les surfaces extérieures et intérieures de la membrane sont dotées d'un photocatalyseur qui, lorsqu'il est irradié à l'aide d'un rayonnement électromagnétique de longueur d'onde appropriée présente des propriétés oxydatives pour décomposer les matériaux organiques dans l'eau. La forme anatase des titanes est le photocatalyseur préféré.
Also published as
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