GB9015448D0 - Improvements in or relating to flow control - Google Patents

Improvements in or relating to flow control

Info

Publication number
GB9015448D0
GB9015448D0 GB9015448A GB9015448A GB9015448D0 GB 9015448 D0 GB9015448 D0 GB 9015448D0 GB 9015448 A GB9015448 A GB 9015448A GB 9015448 A GB9015448 A GB 9015448A GB 9015448 D0 GB9015448 D0 GB 9015448D0
Authority
GB
United Kingdom
Prior art keywords
flow control
relating
porous membrane
plastics material
perforating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
GB9015448A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LANMARK CONSULTANTS Ltd
Original Assignee
LANMARK CONSULTANTS Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LANMARK CONSULTANTS Ltd filed Critical LANMARK CONSULTANTS Ltd
Priority to GB9015448A priority Critical patent/GB9015448D0/en
Publication of GB9015448D0 publication Critical patent/GB9015448D0/en
Priority to AU81985/91A priority patent/AU8198591A/en
Priority to PCT/GB1991/001092 priority patent/WO1992000798A1/en
Priority to JP3512018A priority patent/JPH05508343A/en
Priority to IL98751A priority patent/IL98751A0/en
Priority to ZA915325A priority patent/ZA915325B/en
Priority to PT98308A priority patent/PT98308A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/0032—Organic membrane manufacture by inducing porosity into non porous precursor membranes by elimination of segments of the precursor, e.g. nucleation-track membranes, lithography or laser methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/111—Making filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/31—Self-supporting filtering elements
    • B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
    • B01D29/356—Self-supporting filtering elements arranged for outward flow filtration open-ended, the arrival of the mixture to be filtered and the discharge of the concentrated mixture are situated on both opposite sides of the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/70—Regenerating the filter material in the filter by forces created by movement of the filter element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/0025—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching
    • B01D67/0027—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching by stretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/04—Tubular membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23124—Diffusers consisting of flexible porous or perforated material, e.g. fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23126—Diffusers characterised by the shape of the diffuser element
    • B01F23/231265—Diffusers characterised by the shape of the diffuser element being tubes, tubular elements, cylindrical elements or set of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • B23K26/382—Removing material by boring or cutting by boring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • B23K26/382—Removing material by boring or cutting by boring
    • B23K26/389—Removing material by boring or cutting by boring of fluid openings, e.g. nozzles, jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/06—Making preforms having internal stresses, e.g. plastic memory
    • B29C61/0608—Making preforms having internal stresses, e.g. plastic memory characterised by the configuration or structure of the preforms
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/20—Activated sludge processes using diffusers
    • C02F3/201—Perforated, resilient plastic diffusers, e.g. membranes, sheets, foils, tubes, hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/04—Supports for the filtering elements
    • B01D2201/0461—Springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/18—Filters characterised by the openings or pores
    • B01D2201/184—Special form, dimension of the openings, pores of the filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/28—Pore treatments
    • B01D2323/283—Reducing the pores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/44—Relaxation steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/30—Organic material
    • B23K2103/42—Plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0045—Perforating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/755—Membranes, diaphragms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Plasma & Fusion (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Microbiology (AREA)
  • Forests & Forestry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

A porous membrane is made by stretching a rubber or plastics material, perforating the material and then reducing the material to decrease the pore size. The material may be a heat shrinkable plastics material which has already been stretched in the course of manufacture. The material is preferably tubular in form and a support, for example a helical spring, may be disposed therein. The porous membrane may be used as a flow control element which has particular application in a method of diffusing a fluid into a surrounding medium, for example air into sewage.
GB9015448A 1990-07-13 1990-07-13 Improvements in or relating to flow control Pending GB9015448D0 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB9015448A GB9015448D0 (en) 1990-07-13 1990-07-13 Improvements in or relating to flow control
AU81985/91A AU8198591A (en) 1990-07-13 1991-07-04 Improvements in or relating to flow control
PCT/GB1991/001092 WO1992000798A1 (en) 1990-07-13 1991-07-04 Improvements in or relating to flow control
JP3512018A JPH05508343A (en) 1990-07-13 1991-07-04 Improvements regarding flow control
IL98751A IL98751A0 (en) 1990-07-13 1991-07-05 Membrane and method for flow control
ZA915325A ZA915325B (en) 1990-07-13 1991-07-09 Flow control
PT98308A PT98308A (en) 1990-07-13 1991-07-12 Process for the manufacture of a porous membrane, porous membrane, flow control element including the membrane and process for diffusion of a membrane flow through the membranes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9015448A GB9015448D0 (en) 1990-07-13 1990-07-13 Improvements in or relating to flow control

Publications (1)

Publication Number Publication Date
GB9015448D0 true GB9015448D0 (en) 1990-08-29

Family

ID=10679053

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9015448A Pending GB9015448D0 (en) 1990-07-13 1990-07-13 Improvements in or relating to flow control

Country Status (7)

Country Link
JP (1) JPH05508343A (en)
AU (1) AU8198591A (en)
GB (1) GB9015448D0 (en)
IL (1) IL98751A0 (en)
PT (1) PT98308A (en)
WO (1) WO1992000798A1 (en)
ZA (1) ZA915325B (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9109713D0 (en) * 1991-05-03 1991-06-26 Todd John J Apparatus for the gasification of liquids
US5286432A (en) * 1992-03-30 1994-02-15 Robert Schmukler Fabrication of micron-range holes in protective barriers and encapsulating materials
WO1993025484A1 (en) * 1992-06-09 1993-12-23 Lanmark (Water) Limited Fluid diffuser
CA2089672A1 (en) * 1992-09-23 1994-03-24 Lee K. Jameson Method for forming a net-like material from a thermoplastic film
CA2090075A1 (en) * 1992-09-23 1994-03-24 Bernard Cohen Method for forming ultra-microapertures in thin thermoplastic film materials and products formed thereby
DE19528871C2 (en) * 1994-08-24 1997-08-14 Forschungszentrum Juelich Gmbh Fumigation tube module with selectively gas-permeable hose membranes and reactors provided with them for cell culture technology as well as fluidized bed reactors for cell cultivation
JP3322595B2 (en) * 1996-03-28 2002-09-09 テルモ株式会社 Filter device and method for separating / collecting biological microstructure
AT403349B (en) * 1996-05-13 1998-01-26 Staudinger Johann METHOD AND DEVICE FOR ENTERING A GAS OR GAS MIXTURE INTO A LIQUID
US5811164A (en) * 1996-09-27 1998-09-22 Plastic Specialties And Technologies Investments, Inc. Aeration pipe and method of making same
AUPO580897A0 (en) * 1997-03-25 1997-04-17 Collings, Stephen R. Foamed light building products
DE19812756A1 (en) * 1998-03-23 1999-10-07 Inst Textil & Verfahrenstech Breathable membrane
DE10038412A1 (en) 2000-08-07 2002-02-21 Mann & Hummel Filter Filter element with a filter medium applied to a support body
AUPR158300A0 (en) 2000-11-20 2000-12-14 Amcor Packaging (Australia) Pty Ltd Method for forming perforations in film
WO2002102720A1 (en) * 2001-06-15 2002-12-27 Ott Gmbh Sewage clarification device for a clarification tank
WO2009046466A1 (en) * 2007-10-10 2009-04-16 Johann Staudinger Device for introducing gas into a fluid
US8833216B2 (en) 2009-08-10 2014-09-16 Amcor Limited Method and an apparatus for perforating polymeric film
BR112012020301A2 (en) * 2010-03-02 2016-04-26 Acal Energy Ltd device for generating fine bubbles, method for manufacturing a device for generating fine bubbles, method for generating fine bubbles, catholyte regeneration system, and use of the device
CN110951106B (en) * 2019-09-26 2022-05-13 上海稀点新材料科技有限公司 Solvent type resin heat insulation material with nano porous structure and preparation method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2533609A (en) * 1949-03-19 1950-12-12 Bell Aircraft Corp Process for manufacturing minutely orificed articles
DD123779A1 (en) * 1975-10-23 1977-01-19
JPS555861A (en) * 1978-06-29 1980-01-17 Sumitomo Electric Ind Ltd Method of manufacturing porous tube
EP0069528A3 (en) * 1981-07-04 1985-01-09 B & R ENGINEERING LIMITED Filtration method and apparatus
JPS62148246A (en) * 1985-12-23 1987-07-02 Oji Yuka Gouseishi Kk Manufacture of perforated resin film
WO1987007590A1 (en) * 1986-06-12 1987-12-17 Wilke Engelbart Process and device for large surface-area fine-bubble gasification of liquids
JPS6323936A (en) * 1986-07-17 1988-02-01 Dainippon Printing Co Ltd Production of perforated film

Also Published As

Publication number Publication date
ZA915325B (en) 1992-04-29
AU8198591A (en) 1992-02-04
WO1992000798A1 (en) 1992-01-23
IL98751A0 (en) 1992-07-15
PT98308A (en) 1993-09-30
JPH05508343A (en) 1993-11-25

Similar Documents

Publication Publication Date Title
GB9015448D0 (en) Improvements in or relating to flow control
EP0598908A4 (en) Filter and filter element.
EP0633053A4 (en) Polytetrafluoroethylene porous film and method for manufacturing the same.
JPS5699242A (en) Porous sheet and production thereof
DE69401325T2 (en) Superabsorbent polymer with improved absorption properties and absorption under pressure
DE68900302D1 (en) AN ADHESIVE SIDE HAVING ABSORBING BANDAGE AND METHOD FOR THE PRODUCTION THEREOF.
ATE146698T1 (en) APPARATUS AND METHOD FOR ELIMINATION OF RADON
ATE56216T1 (en) PROCESS FOR MAKING A MICROPOROUS POLYAETHYLENE FILM.
ATE11228T1 (en) USE OF POLYVINYL ALCOHOL WATER PERMEABLE FILMS.
TW347321B (en) Porous material for absorption of aqueous body fluids, methods for preparing a superabsorbent material and absorbent articles comprising the material
CA2242332A1 (en) Membrane module for a membrane separation system, its use and process for producing the same
ATE182564T1 (en) FLUID DIFFUSER
IT1191216B (en) LIQUID GAS LIGHTER
JPS56136630A (en) Air diffuser
ES2124767T3 (en) MEMBRANE OF COMPOSITE MATERIAL WITH HIGH SELECTIVITY AND FLOW AND PROCEDURE FOR ITS MANUFACTURE.
JPS54131577A (en) Manufacture of composite permeable tube
JPS56135525A (en) Production of porous membrane
FI940876A (en) Microporous cellulose derivatives and method for their preparation
JPS55102409A (en) Deodorizing instrument, dehumidifier and water purifier which can easily be regenerated
KR860000967A (en) Replica Method of Surface Characteristics
ATE86874T1 (en) DEVICE FOR FOAM DESTROYING.
KR970010673A (en) Method of Maximizing Thermal Energy Conservation Rate and Wastewater Purification Effect by Using Synthetic Resin Ball
DK0525011T3 (en) Portable water purification system
ATE260703T1 (en) DEVICE FOR PURIFYING GASES AND LIQUIDS, SUCH AS AIR OR WATER
ATE135388T1 (en) THERMALLY STERILIZABLE POROUS SUPPORT BODY FOR BIOCATALYST