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FR2301291A2 - Liquid surface rotary agitator for gas and liquid contacting - esp. biological aeration and mechanical destruction of foam - Google Patents

Liquid surface rotary agitator for gas and liquid contacting - esp. biological aeration and mechanical destruction of foam

Info

Publication number
FR2301291A2
FR2301291A2 FR7505523A FR7505523A FR2301291A2 FR 2301291 A2 FR2301291 A2 FR 2301291A2 FR 7505523 A FR7505523 A FR 7505523A FR 7505523 A FR7505523 A FR 7505523A FR 2301291 A2 FR2301291 A2 FR 2301291A2
Authority
FR
France
Prior art keywords
liquid
barrel
gas
impeller
helical element
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.)
Granted
Application number
FR7505523A
Other languages
French (fr)
Other versions
FR2301291B2 (en
Inventor
Jean Lefevre
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.)
Robin SA
Original Assignee
Robin SA
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 Robin SA filed Critical Robin SA
Priority to FR7505523A priority Critical patent/FR2301291A2/en
Publication of FR2301291A2 publication Critical patent/FR2301291A2/en
Application granted granted Critical
Publication of FR2301291B2 publication Critical patent/FR2301291B2/fr
Granted 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
    • C02F3/165—Activated sludge processes using surface aeration the aerator having a vertical axis using vertical aeration channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/02—Foam dispersion or prevention
    • 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
    • B01F23/234—Surface aerating
    • B01F23/2342—Surface aerating with stirrers near to the liquid surface, e.g. partially immersed, for spraying the liquid in the gas or for sucking gas into the liquid, e.g. using stirrers rotating around a horizontal axis or using centrifugal force
    • B01F23/23421—Surface aerating with stirrers near to the liquid surface, e.g. partially immersed, for spraying the liquid in the gas or for sucking gas into the liquid, e.g. using stirrers rotating around a horizontal axis or using centrifugal force the stirrers rotating about a vertical axis
    • B01F23/234211—Stirrers thereof
    • 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
    • C02F3/145—Protection against aerosols
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (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)
  • Dispersion Chemistry (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

In the parent patent a rotary, axial flow impeller for part-immersion in a liquid by suspension at the lower end of a non-horizontal, high-speed rotary shaft, the impeller comprising a helical element coaxial with the shaft and surrounded by a coaxial, tubular, open-ended barrel which is fixed to and rotatable with the helical element. The impeller is used to agitate the surface of the liquid, spraying up and dispersing droplets into the gas above the surfaces to provide excellent liquid/gas contacting. It can be used to promote biological puricn. of waste waters by aeration, the physical destruction foam, the wetting of floating powders, cooling the liquid, mixing etc. In this addn. the barrel is conically tapered in the bore from a smaller entry at the lower end containing the helical element to a larger exit above the surface. The upper half of the barrel wall is pref. perforated with holes or scots. Spaced just above the barrel exit, the shaft is pref. fitted with a radial flange. With a curved underside to divert radially outwards the axially impelled liquid. Largely eliminates the deposition of centrifugally flung solids on the internal surfaces of the barrel.
FR7505523A 1975-02-21 1975-02-21 Liquid surface rotary agitator for gas and liquid contacting - esp. biological aeration and mechanical destruction of foam Granted FR2301291A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7505523A FR2301291A2 (en) 1975-02-21 1975-02-21 Liquid surface rotary agitator for gas and liquid contacting - esp. biological aeration and mechanical destruction of foam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7505523A FR2301291A2 (en) 1975-02-21 1975-02-21 Liquid surface rotary agitator for gas and liquid contacting - esp. biological aeration and mechanical destruction of foam

Publications (2)

Publication Number Publication Date
FR2301291A2 true FR2301291A2 (en) 1976-09-17
FR2301291B2 FR2301291B2 (en) 1977-10-21

Family

ID=9151571

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7505523A Granted FR2301291A2 (en) 1975-02-21 1975-02-21 Liquid surface rotary agitator for gas and liquid contacting - esp. biological aeration and mechanical destruction of foam

Country Status (1)

Country Link
FR (1) FR2301291A2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3151160A1 (en) * 1981-10-12 1983-04-28 Hütögépgyár, 5100 Jászberény LOW PRESSURE DEVICE FOR THE AUTOMATIC CONSUMPTION-BASED FASTENING OF LIQUIDS
WO1996031438A1 (en) * 1995-04-03 1996-10-10 Schulz Verfahrenstechnik Gmbh Process and device for conveying liquids or liquids mixed with gaseous and/or solids materials
EP1520610A1 (en) * 2003-09-30 2005-04-06 Acqua & Co Srl. An improved foam removal device
CN109046003A (en) * 2018-10-11 2018-12-21 王泽红 A kind of factory's biological deodorizing equipment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104724819A (en) * 2015-03-30 2015-06-24 中国科学院城市环境研究所 Control device for solving problem of foam stacking in process of aerobic biological treatment of wastewater

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB470873A (en) * 1936-04-17 1937-08-24 James Frankland Bolton Improvements connected with surface aeration plant for treating sewage
FR1339984A (en) * 1962-11-28 1963-10-11 Yarra Invest Trust Ltd Air circulation cooling device
FR1511602A (en) * 1966-12-19 1968-02-02 Prod Chim Et Celluloses Rey Method and device for aeration of water
DE2138400A1 (en) * 1971-07-31 1973-02-08 Hans Dr Ing Kohlmann DEVICE FOR INTRODUCING GAS IN LIQUIDS AND FOR CONVEYING AND MIXING LIQUIDS, IN PARTICULAR FOR WASTE WATER PURIFICATION SYSTEMS

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB470873A (en) * 1936-04-17 1937-08-24 James Frankland Bolton Improvements connected with surface aeration plant for treating sewage
FR1339984A (en) * 1962-11-28 1963-10-11 Yarra Invest Trust Ltd Air circulation cooling device
FR1511602A (en) * 1966-12-19 1968-02-02 Prod Chim Et Celluloses Rey Method and device for aeration of water
DE2138400A1 (en) * 1971-07-31 1973-02-08 Hans Dr Ing Kohlmann DEVICE FOR INTRODUCING GAS IN LIQUIDS AND FOR CONVEYING AND MIXING LIQUIDS, IN PARTICULAR FOR WASTE WATER PURIFICATION SYSTEMS

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3151160A1 (en) * 1981-10-12 1983-04-28 Hütögépgyár, 5100 Jászberény LOW PRESSURE DEVICE FOR THE AUTOMATIC CONSUMPTION-BASED FASTENING OF LIQUIDS
WO1996031438A1 (en) * 1995-04-03 1996-10-10 Schulz Verfahrenstechnik Gmbh Process and device for conveying liquids or liquids mixed with gaseous and/or solids materials
DE19513333A1 (en) * 1995-04-03 1996-10-10 Schulz Verfahrenstechnik Gmbh Method and device for conveying liquids or liquids containing gaseous and / or solid substances
EP1520610A1 (en) * 2003-09-30 2005-04-06 Acqua & Co Srl. An improved foam removal device
US7101478B2 (en) 2003-09-30 2006-09-05 Aqua&Co S.R.L. Foam removal device
CN109046003A (en) * 2018-10-11 2018-12-21 王泽红 A kind of factory's biological deodorizing equipment

Also Published As

Publication number Publication date
FR2301291B2 (en) 1977-10-21

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