GB1527895A - Surface aeration system with controlled aerator submergence - Google Patents

Surface aeration system with controlled aerator submergence

Info

Publication number
GB1527895A
GB1527895A GB4241375A GB4241375A GB1527895A GB 1527895 A GB1527895 A GB 1527895A GB 4241375 A GB4241375 A GB 4241375A GB 4241375 A GB4241375 A GB 4241375A GB 1527895 A GB1527895 A GB 1527895A
Authority
GB
United Kingdom
Prior art keywords
gas
liquid
aerator
oct
power consumption
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
GB4241375A
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 GB1527895A publication Critical patent/GB1527895A/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
    • C02F3/006—Regulation methods for biological treatment
    • 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
    • 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
    • B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
    • B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
    • B01F23/23761—Aerating, i.e. introducing oxygen containing gas in 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
    • B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
    • B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
    • B01F23/23761—Aerating, i.e. introducing oxygen containing gas in liquids
    • B01F23/237612—Oxygen
    • 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
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/70—Mixers specially adapted for working at sub- or super-atmospheric pressure, e.g. combined with de-foaming
    • B01F33/71—Mixers specially adapted for working at sub- or super-atmospheric pressure, e.g. combined with de-foaming working at super-atmospheric pressure, e.g. in pressurised vessels
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Molecular Biology (AREA)
  • Health & Medical Sciences (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

1527895 Aerating liquids UNION CARBIDE CORP 16 Oct 1975 [17 Oct 1974] 42413/75 Heading B1C [Also in Division G3] In a method of and apparatus for contacting a gas with a liquid, e.g. oxygen-rich gas with BOD liquor, and in which rotary surface aeration means 12, Fig. 2, are positioned in an enclosed treatment chamber 25 to which the liquid and gas are fed, the power consumption of the aeration means 12 is sensed by sensing means 89, a control signal generated and transmitted, 23, 24 and gas flow control means 6 adjusted in dependence thereon in order to adjust the gas pressure in the chamber and thereby the liquid level so as to maintain the power consumption at a predetermined optimum value and the liquid level at the design value. The rotary aerator may comprise four radially-extending, forwardly-angled blades mounted on a vertical shaft (Fig. 1 not shown) or alternatively a horizontally mounted brush-type aerator 39, Fig. 3, which extends through successive aeration chambers 40, 41, 42. In another embodiment (Fig. 5, not shown) the vertically arranged shafts of radial blade type aerators extend down into the liquid and carry mixing propellers at their lower ends. Controls (see Division G3) may be provided for controlling the oxygen concentration of the liquid undergoing treatment and the oxygen concentration of the spent gas.
GB4241375A 1974-10-17 1975-10-16 Surface aeration system with controlled aerator submergence Expired GB1527895A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US51568174A 1974-10-17 1974-10-17

Publications (1)

Publication Number Publication Date
GB1527895A true GB1527895A (en) 1978-10-11

Family

ID=24052313

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4241375A Expired GB1527895A (en) 1974-10-17 1975-10-16 Surface aeration system with controlled aerator submergence

Country Status (5)

Country Link
JP (1) JPS5436415B2 (en)
BR (1) BR7506766A (en)
DE (1) DE2546429A1 (en)
FR (1) FR2287939A1 (en)
GB (1) GB1527895A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138692A (en) * 1983-04-05 1984-10-31 Isc Smelting Dispersion of Liquids in Gases

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500323B2 (en) * 1974-12-05 1989-05-19 Roland Jean Louis DEVICE FOR INTRODUCING A GAS INTO A LIQUID
DE2800034C2 (en) * 1978-01-02 1984-01-05 Passavant-Werke AG & Co KG, 6209 Aarbergen Wastewater treatment process as well as the facility for its implementation
ATE20703T1 (en) * 1982-03-12 1986-08-15 Roland Jean Louis DEVICE FOR GASING A LIQUID AND USE OF SUCH DEVICE.
JPH0222026Y2 (en) * 1985-08-08 1990-06-13
RU200367U1 (en) * 2020-03-11 2020-10-21 Федеральное государственное бюджетное образовательное учреждение высшего образования "Петрозаводский государственный университет" OXYGENATOR
CN115433594B (en) * 2022-09-28 2023-12-05 张双兴 Pressure adjusting method and device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138692A (en) * 1983-04-05 1984-10-31 Isc Smelting Dispersion of Liquids in Gases

Also Published As

Publication number Publication date
JPS5164749A (en) 1976-06-04
FR2287939A1 (en) 1976-05-14
BR7506766A (en) 1976-08-17
JPS5436415B2 (en) 1979-11-09
DE2546429A1 (en) 1976-04-29
FR2287939B1 (en) 1980-01-11

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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