FR2279451A1 - Incorporating device for gas into activated sludge - with rotating nozzle head and deflector plate - Google Patents

Incorporating device for gas into activated sludge - with rotating nozzle head and deflector plate

Info

Publication number
FR2279451A1
FR2279451A1 FR7522801A FR7522801A FR2279451A1 FR 2279451 A1 FR2279451 A1 FR 2279451A1 FR 7522801 A FR7522801 A FR 7522801A FR 7522801 A FR7522801 A FR 7522801A FR 2279451 A1 FR2279451 A1 FR 2279451A1
Authority
FR
France
Prior art keywords
gas
liq
head
bubbles
coil
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.)
Withdrawn
Application number
FR7522801A
Other languages
French (fr)
Inventor
Otto Bruckmuller
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.)
Messer Griesheim GmbH
Original Assignee
Messer Griesheim GmbH
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 Messer Griesheim GmbH filed Critical Messer Griesheim GmbH
Publication of FR2279451A1 publication Critical patent/FR2279451A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
    • 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
    • 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
    • B01F23/2336—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
    • B01F23/23364—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 between the stirrer elements
    • B01F23/233642—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 between the stirrer elements at the stirrer elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
    • B01F25/452—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces
    • B01F25/4521—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces the components being pressed through orifices in elements, e.g. flat plates or cylinders, which obstruct the whole diameter of the tube
    • 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
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B01F27/1121—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades pin-shaped
    • 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
    • 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
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • 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)
  • Hydrology & Water Resources (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Gas Separation By Absorption (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

Device for incorporating a gas in a liq. is partic. intended for the introduction of oxygen into the liq. contd. in an activated sludge tank of a clarification plant. It comprises a nozzle head, provided with four gas outlet tubes, which is fixed to a vertical, rotating shaft. The fixed gas feed pipe penetrates into the lower part of the head and widens out to form a gas distribution chamber. A perforated disc, rigidly fixed to the envelope, is placed above the head. The envelope is provided with deflectors; an axial agitator is attached to the shaft. The head is arranged so that the outlet tubes only receive gas in certain positions as they rotate; a press. drop is produced which causes a rapid detachment of the gas bubbles from the inclined ends of the tubes. The gas bubbles pass through the perforated disc where they are broken down by the shearing effect of the blades in the agitated zone. The deflectors prevent the formation of a vortex and amplify the turbulence. The intermittent gas feed prevents the formation of large bubbles so that it is incorporated as very fine bubbles with a long dwell time in the liq. It is partic. advantageous if the cylindrical envelope forms part of an assembly in which the liq. receiving the gas circulates through a tubular coil. The dwell time of the gas bubbles in such a coil can be extended at will. The coil should be used when the gas consists of pure oxygen.
FR7522801A 1974-07-27 1975-07-22 Incorporating device for gas into activated sludge - with rotating nozzle head and deflector plate Withdrawn FR2279451A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2436273A DE2436273A1 (en) 1974-07-27 1974-07-27 DEVICE FOR ENTERING A GAS INTO A LIQUID

Publications (1)

Publication Number Publication Date
FR2279451A1 true FR2279451A1 (en) 1976-02-20

Family

ID=5921719

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7522801A Withdrawn FR2279451A1 (en) 1974-07-27 1975-07-22 Incorporating device for gas into activated sludge - with rotating nozzle head and deflector plate

Country Status (5)

Country Link
BE (1) BE831783A (en)
DE (1) DE2436273A1 (en)
ES (1) ES439381A1 (en)
FR (1) FR2279451A1 (en)
NL (1) NL7508670A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1504683A1 (en) * 2003-08-08 2005-02-09 Hauni Maschinenbau AG Method and apparatus for producing a filter rod

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4137285A (en) * 1976-06-24 1979-01-30 Mitsui Engineering & Shipbuilding Co., Ltd. Gas-liquid contact apparatus
DE10340024B3 (en) * 2003-08-28 2005-04-14 Thomas Funk Device for enriching a liquid with at least one gas
CN110465249A (en) * 2019-07-01 2019-11-19 华东理工大学 A kind of regulation size bubble fractal structure strengthens the method and device of mass transfer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1504683A1 (en) * 2003-08-08 2005-02-09 Hauni Maschinenbau AG Method and apparatus for producing a filter rod

Also Published As

Publication number Publication date
NL7508670A (en) 1976-01-29
BE831783A (en) 1975-11-17
ES439381A1 (en) 1977-03-01
DE2436273A1 (en) 1976-02-12

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Legal Events

Date Code Title Description
ST Notification of lapse