GB1494731A - Dissolving gases - Google Patents

Dissolving gases

Info

Publication number
GB1494731A
GB1494731A GB5746873A GB5746873A GB1494731A GB 1494731 A GB1494731 A GB 1494731A GB 5746873 A GB5746873 A GB 5746873A GB 5746873 A GB5746873 A GB 5746873A GB 1494731 A GB1494731 A GB 1494731A
Authority
GB
United Kingdom
Prior art keywords
dec
liquid
dissolving gases
baffles
propeller
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.)
Expired
Application number
GB5746873A
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.)
BOC Group Ltd
Original Assignee
BOC International 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 BOC International Ltd filed Critical BOC International Ltd
Priority to GB5746873A priority Critical patent/GB1494731A/en
Priority to ES0432794A priority patent/ES432794A1/en
Priority to AU76287/74A priority patent/AU494659B2/en
Priority to ZA00747937A priority patent/ZA747937B/en
Publication of GB1494731A publication Critical patent/GB1494731A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C02F3/14—Activated sludge processes using surface aeration
    • C02F3/16—Activated sludge processes using surface aeration the aerator having a vertical axis
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
    • A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
    • 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
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • 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
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23311—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer axis
    • 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
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23314—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/113—Propeller-shaped stirrers for producing an axial flow, e.g. shaped like a ship or aircraft propeller
    • B01F27/1133—Propeller-shaped stirrers for producing an axial flow, e.g. shaped like a ship or aircraft propeller the impeller being of airfoil or aerofoil type
    • 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
    • C02F3/205—Moving, e.g. rotary, diffusers; Stationary diffusers with moving, e.g. rotary, distributors
    • 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
    • C02F3/205—Moving, e.g. rotary, diffusers; Stationary diffusers with moving, e.g. rotary, distributors
    • C02F3/207—Moving, e.g. rotary, diffusers; Stationary diffusers with moving, e.g. rotary, distributors with axial thrust propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/113—Propeller-shaped stirrers for producing an axial flow, e.g. shaped like a ship or aircraft propeller
    • B01F27/1131—Propeller-shaped stirrers for producing an axial flow, e.g. shaped like a ship or aircraft propeller with holes in the propeller blade surface
    • 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

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Environmental Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

1494731 Aerating liquids BOC INTERNATIONAL Ltd 12 Dec 1974 [12 Dec 1973] 57468/73 Heading B1C A gas is dispersed in a liquid through at least part of the surface of a propeller having hollow blades 18 of aerofoil cross-section, and the permeable portions having pores which will create bubbles of 0.1mm. diameter or less; they may be of sintered metal or ceramics. The parts 10, 12 may be of aluminium. The flow of liquid is preferably downward and may be enhanced by baffles or ducts. The method and apparatus are useful in fish farming and sewage or effluent treatment.
GB5746873A 1973-12-12 1973-12-12 Dissolving gases Expired GB1494731A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB5746873A GB1494731A (en) 1973-12-12 1973-12-12 Dissolving gases
ES0432794A ES432794A1 (en) 1973-12-12 1974-12-11 Apparatus and method for dissolving gas in a mass of liquid. (Machine-translation by Google Translate, not legally binding)
AU76287/74A AU494659B2 (en) 1973-12-12 1974-12-11 Dissolving gases
ZA00747937A ZA747937B (en) 1973-12-12 1974-12-12 Dissolving gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5746873A GB1494731A (en) 1973-12-12 1973-12-12 Dissolving gases

Publications (1)

Publication Number Publication Date
GB1494731A true GB1494731A (en) 1977-12-14

Family

ID=10479255

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5746873A Expired GB1494731A (en) 1973-12-12 1973-12-12 Dissolving gases

Country Status (3)

Country Link
ES (1) ES432794A1 (en)
GB (1) GB1494731A (en)
ZA (1) ZA747937B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1243313A2 (en) * 2001-03-23 2002-09-25 R.T.N. S.r.l. Device and method for mixing a gas with a liquid or a liquid with a liquid

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1243313A2 (en) * 2001-03-23 2002-09-25 R.T.N. S.r.l. Device and method for mixing a gas with a liquid or a liquid with a liquid
EP1243313A3 (en) * 2001-03-23 2004-09-01 R.T.N. S.r.l. Device and method for mixing a gas with a liquid or a liquid with a liquid

Also Published As

Publication number Publication date
AU7628774A (en) 1976-06-17
ZA747937B (en) 1975-12-31
ES432794A1 (en) 1976-12-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Free format text: FOR 1494732 READ 1494731 IN JOURNAL 4925,PAGE 2364