GB1281630A - Improvements in or relating to apparatus for diffusing gas in a fluid - Google Patents

Improvements in or relating to apparatus for diffusing gas in a fluid

Info

Publication number
GB1281630A
GB1281630A GB5354970A GB5354970A GB1281630A GB 1281630 A GB1281630 A GB 1281630A GB 5354970 A GB5354970 A GB 5354970A GB 5354970 A GB5354970 A GB 5354970A GB 1281630 A GB1281630 A GB 1281630A
Authority
GB
United Kingdom
Prior art keywords
gas
cavities
relating
fluid
aerating
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
GB5354970A
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.)
Dravo Corp
Original Assignee
Dravo 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 Dravo Corp filed Critical Dravo Corp
Publication of GB1281630A publication Critical patent/GB1281630A/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
    • 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
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23122—Diffusers having elements opening under air pressure, e.g. valves
    • 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)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

1281630 Agitating and aerating liquids. DRAVO CORP 11 Nov 1970 [24 June 1970] 53549/70 Heading B1C A diffuser primarily for aerating sewage has a gas chamber 20 and two transverse rectangular cavities 30 closed by a flexible strip member 24 which is secured in the middle by a transverse member 36 so that in operation the strip, and the gas passing over the cavities, vibrate at the resonant frequency of the gas in the cavities 30. The member 24 may be tapered in thickness towards the ends, see Fig. 5 (not shown). The resonance causes a higher amplitude and/or frequency of vibration, shearing the gas bubble to promote a more uniform discharge of smaller bubbles and thus an increased rate of oxygen transfer, as well as causing high local turbulence.
GB5354970A 1970-06-24 1970-11-11 Improvements in or relating to apparatus for diffusing gas in a fluid Expired GB1281630A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4936970A 1970-06-24 1970-06-24

Publications (1)

Publication Number Publication Date
GB1281630A true GB1281630A (en) 1972-07-12

Family

ID=21959446

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5354970A Expired GB1281630A (en) 1970-06-24 1970-11-11 Improvements in or relating to apparatus for diffusing gas in a fluid

Country Status (3)

Country Link
US (1) US3722836A (en)
FR (1) FR2078319A5 (en)
GB (1) GB1281630A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8287175B2 (en) 2006-10-30 2012-10-16 Perlemax Limited Bubble generation for aeration and other purposes
WO2014060740A1 (en) 2012-10-15 2014-04-24 Perlemax Limited Bubble generation to strip components of a liquid
US10377651B2 (en) 2006-10-30 2019-08-13 Perlemax Ltd Bubble generation for aeration and other purposes

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4279742A (en) * 1976-12-20 1981-07-21 Institute Po Physikochimia Method of and apparatus for the flotation of mineral raw materials
HU175820B (en) * 1977-04-27 1980-10-28 Richter Gedeon Vegyeszet Charge, mainly in equipments for contacting gaseous and liquid media
US4337151A (en) * 1980-12-29 1982-06-29 Red Fox Industries Inc. Method and apparatus for pulsed timed control for sludge return line
US4495114A (en) * 1984-01-17 1985-01-22 Strauss Walter C Leaf spring diffuser with amplitude limit
US4815653A (en) * 1987-02-19 1989-03-28 Serve-All, Inc. Automatic removal of storage bin build-up
US5129553A (en) * 1990-06-05 1992-07-14 The Heil Company Aeration device
US6629773B2 (en) * 2001-05-07 2003-10-07 Richard E. Parks Method and apparatus for gas induced mixing and blending of fluids and other materials

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8287175B2 (en) 2006-10-30 2012-10-16 Perlemax Limited Bubble generation for aeration and other purposes
US10377651B2 (en) 2006-10-30 2019-08-13 Perlemax Ltd Bubble generation for aeration and other purposes
WO2014060740A1 (en) 2012-10-15 2014-04-24 Perlemax Limited Bubble generation to strip components of a liquid

Also Published As

Publication number Publication date
US3722836A (en) 1973-03-27
FR2078319A5 (en) 1971-11-05

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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