GB1336372A - Method and apparatus for sparging gas into liquid - Google Patents

Method and apparatus for sparging gas into liquid

Info

Publication number
GB1336372A
GB1336372A GB1134771A GB1134771A GB1336372A GB 1336372 A GB1336372 A GB 1336372A GB 1134771 A GB1134771 A GB 1134771A GB 1134771 A GB1134771 A GB 1134771A GB 1336372 A GB1336372 A GB 1336372A
Authority
GB
United Kingdom
Prior art keywords
sec
arms
gas
sparging
diameter
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
GB1134771A
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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Publication of GB1336372A publication Critical patent/GB1336372A/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
    • C02F3/20—Activated sludge processes using diffusers
    • C02F3/205—Moving, e.g. rotary, diffusers; Stationary diffusers with moving, e.g. rotary, distributors
    • 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
    • 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
    • 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
    • B01F23/2336—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 location of the place of introduction of the gas relative to the stirrer
    • B01F23/23362—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 location of the place of introduction of the gas relative to the stirrer the gas being introduced under the stirrer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/503—Floating mixing devices
    • 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
    • C02F3/26—Activated sludge processes using pure oxygen or oxygen-rich gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2215/00—Auxiliary or complementary information in relation with mixing
    • B01F2215/04—Technical information in relation with mixing
    • B01F2215/0413—Numerical information
    • B01F2215/0436—Operational information
    • B01F2215/045—Numerical flow-rate values
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2215/00—Auxiliary or complementary information in relation with mixing
    • B01F2215/04—Technical information in relation with mixing
    • B01F2215/0413—Numerical information
    • B01F2215/0436—Operational information
    • B01F2215/0481—Numerical speed values
    • 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
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B01F27/1125—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades with vanes or blades extending parallel or oblique to the stirrer axis
    • B01F27/11251—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades with vanes or blades extending parallel or oblique to the stirrer axis having holes in the surface
    • 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
    • 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
    • B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

1336372 Aerating liquids UNION CARBIDE CORP 26 April 1971 [27 April 1970 8 April 1971] 11347/71 Heading C1C [Also in Division B1] In a method of aerating a liquid (as in the activated sludge process) a multiplicity of orbiting gas streams of 1/32-“ inch effective diameter is injected as bubbles at a minimum rate of 5 ft./sec. and a minimum flow rate of 0À06 ft<SP>3</SP>/sec./ft<SP>2</SP> of horizontal sparging zone area, the streams orbiting about a vertical axis at a tangential velocity of 4À5-33 ft./sec. and at a rate such that N<SP>2</SP>D<SP>2</SP> is at least 15 ft<SP>2</SP>/sec<SP>2</SP> about the axis (where N = rev.(sec. and D is the diameter in feet of the sparger arms), the ratio of the total cross-sectional area of the gas streams to the swept area being 0À006 to 0À06, and the liquid flowing downwardly through the sparging zone at 2 ft./sec. or more. A fixed apparatus. Fig. 1, comprises a rotatable hollow shaft 2 supplying pressure gas to sparging arms 5, there being vertical baffles 12 and/or spoke-like baffles 9a, 9b, 9c to prevent vortexing; as described there are eight arms and baffles. As shown the liquid is caused to flow downwardly by a propeller 4, but an external pump may be used. The sparging arms may be shrouded, and may be inclined upwardly (see Fig. 4, not shown) or downwardly; they are preferably flattened in cross-section and the major axis inclined (See Figs. 4 and 6, not shown). The effective diameter of the gas discharge openings is 1/32-“ inch; they may be non-circular and may be made on the top, bottom and/or sides of the arms so long as their axes have a vertical component. In an example there were twelve or twenty-four openings in each arm. The propeller, when provided, may be interchangeable and/or of adjustable pitch and is preferably spaced a distance of half to one diameter above the sparging arms; its preferred pitch/diameter ratio is 1À5 and the ratio of sparger arm/propeller diameter 0À8-1À1. The propeller serves also to mix suspended solids with the liquid. A floating apparatus, Fig. 5, especially suitable for use with natural bodies of water comprises a gas-tight floating dome 16 on which are mounted the rotatable shaft and the driving and pumping mechanism; gas trapped beneath the dome may be recirculated. Vertical baffles may be suspended from the dome or supported from the lagoon bottom. The method and apparatus are especially suitable when the gas is oxygen or rich in oxygen, and peferred magnitudes of the various above-quoted dimensions are recited for the treatment by oxygen of waste liquor containing organic solids.
GB1134771A 1970-04-27 1971-04-26 Method and apparatus for sparging gas into liquid Expired GB1336372A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3207070A 1970-04-27 1970-04-27
US13248371A 1971-04-08 1971-04-08

Publications (1)

Publication Number Publication Date
GB1336372A true GB1336372A (en) 1973-11-07

Family

ID=26707942

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1134771A Expired GB1336372A (en) 1970-04-27 1971-04-26 Method and apparatus for sparging gas into liquid

Country Status (4)

Country Link
JP (1) JPS5140543B1 (en)
CA (1) CA949238A (en)
DE (1) DE2120362A1 (en)
GB (1) GB1336372A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2234235A (en) * 1989-04-26 1991-01-30 Elisabeth Mary Campbell Aerating liquids
ES2662693A1 (en) * 2016-10-03 2018-04-09 Universidad De Sevilla System agitator and diffuser of a gas in liquids (Machine-translation by Google Translate, not legally binding)
ES2738225A1 (en) * 2018-07-20 2020-01-20 Univ Sevilla Agitator and gas diffuser system in liquids and liquids in other immiscible liquids (Machine-translation by Google Translate, not legally binding)
CN114044274A (en) * 2021-11-22 2022-02-15 安徽皖山食品有限公司 Rice storage is with fresh-keeping device
CN115888508A (en) * 2023-02-21 2023-04-04 喜跃发国际环保新材料股份有限公司 Processing technology and processing system of water-based paint

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047921A1 (en) * 1980-09-15 1982-03-24 Menzel GmbH. + Co. Process and apparatus for the aeration of a liquid, especially waste water
DE3124213A1 (en) * 1981-06-20 1983-01-13 Menzel Gmbh & Co, 7000 Stuttgart METHOD AND DEVICE FOR TREATING WASTEWATER
DE3124215A1 (en) * 1981-06-20 1983-01-05 Menzel Gmbh & Co, 7000 Stuttgart METHOD AND DEVICE FOR FUMING A LIQUID
HUT37071A (en) * 1984-01-04 1985-11-28 Magyar Asvanyolaj Es Foeldgaz Method and apparatus for mixing liquids by means of gases dispergated into the liquid

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2234235A (en) * 1989-04-26 1991-01-30 Elisabeth Mary Campbell Aerating liquids
GB2234235B (en) * 1989-04-26 1992-10-14 Campbell Elisabeth Mary Improved flotation for aerators
ES2662693A1 (en) * 2016-10-03 2018-04-09 Universidad De Sevilla System agitator and diffuser of a gas in liquids (Machine-translation by Google Translate, not legally binding)
ES2738225A1 (en) * 2018-07-20 2020-01-20 Univ Sevilla Agitator and gas diffuser system in liquids and liquids in other immiscible liquids (Machine-translation by Google Translate, not legally binding)
CN114044274A (en) * 2021-11-22 2022-02-15 安徽皖山食品有限公司 Rice storage is with fresh-keeping device
CN114044274B (en) * 2021-11-22 2022-11-25 安徽皖山食品有限公司 Rice storage is with fresh-keeping device
CN115888508A (en) * 2023-02-21 2023-04-04 喜跃发国际环保新材料股份有限公司 Processing technology and processing system of water-based paint

Also Published As

Publication number Publication date
JPS5140543B1 (en) 1976-11-04
CA949238A (en) 1974-06-11
DE2120362A1 (en) 1971-12-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee