NL7409053A - Aeration of liquids - using a venturi giving supersonic discharge velocities - Google Patents

Aeration of liquids - using a venturi giving supersonic discharge velocities

Info

Publication number
NL7409053A
NL7409053A NL7409053A NL7409053A NL7409053A NL 7409053 A NL7409053 A NL 7409053A NL 7409053 A NL7409053 A NL 7409053A NL 7409053 A NL7409053 A NL 7409053A NL 7409053 A NL7409053 A NL 7409053A
Authority
NL
Netherlands
Prior art keywords
gas
stream
aeration
venturi
phase
Prior art date
Application number
NL7409053A
Other languages
Dutch (nl)
Original Assignee
Envirotech 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 Envirotech Corp filed Critical Envirotech Corp
Publication of NL7409053A publication Critical patent/NL7409053A/en

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
    • C02F3/1278—Provisions for mixing or aeration of the mixed liquor
    • C02F3/1294—"Venturi" aeration means
    • 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
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B01F25/3122—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof the material flowing at a supersonic velocity thereby creating shock waves
    • 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)

Abstract

Aeration of a liquid, e.g. effluent, with small air bubbles by (a) setting up a flow of liq. in a pipe to which a stream of gas is added to produce a two-phase fluid stream with a linear velocity approaching sonic velocity as determined by the volume ratio of the gas and liq. and the static pressure, (b) constricting the stream of two-phase fluid near the place where the gas is introduced, by means of a Venturi pipe, to a sufficient extent to achieve sonic velocity at the zone of maximum constriction, (c) gradually expanding the two-phase stream downstream from the zone of max. constriction so as to increase the velocity and bring about supersonic flow and an associated shock wave in order to disintegrate the gas phase and form small bubbles.
NL7409053A 1973-07-09 1974-07-04 Aeration of liquids - using a venturi giving supersonic discharge velocities NL7409053A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37734573A 1973-07-09 1973-07-09

Publications (1)

Publication Number Publication Date
NL7409053A true NL7409053A (en) 1975-01-13

Family

ID=23488743

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7409053A NL7409053A (en) 1973-07-09 1974-07-04 Aeration of liquids - using a venturi giving supersonic discharge velocities

Country Status (7)

Country Link
JP (1) JPS5049769A (en)
AU (1) AU7074874A (en)
BR (1) BR7405636D0 (en)
CA (1) CA1033078A (en)
IT (1) IT1015792B (en)
NL (1) NL7409053A (en)
ZA (1) ZA744265B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2317233A1 (en) * 1975-07-07 1977-02-04 Waagner Biro Ag METHOD AND DEVICE FOR THE TREATMENT OF A LIQUID
EP0093704A2 (en) * 1982-05-04 1983-11-09 VOEST-ALPINE Aktiengesellschaft Process for mixing liquids with gases
US8193395B2 (en) 2007-05-02 2012-06-05 Pursuit Dynamics Plc Biomass treatment process and system
US8419378B2 (en) 2004-07-29 2013-04-16 Pursuit Dynamics Plc Jet pump
US8789769B2 (en) 2006-09-15 2014-07-29 Tyco Fire & Security Gmbh Mist generating apparatus and method
US9004375B2 (en) 2004-02-26 2015-04-14 Tyco Fire & Security Gmbh Method and apparatus for generating a mist
US9010663B2 (en) 2004-02-26 2015-04-21 Tyco Fire & Security Gmbh Method and apparatus for generating a mist
US10507480B2 (en) 2004-02-26 2019-12-17 Tyco Fire Products Lp Method and apparatus for generating a mist

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4867918A (en) * 1987-12-30 1989-09-19 Union Carbide Corporation Gas dispersion process and system
US4861352A (en) * 1987-12-30 1989-08-29 Union Carbide Corporation Method of separating a gas and/or particulate matter from a liquid
WO1991011238A1 (en) * 1990-02-02 1991-08-08 Sports Marine International Pty. Ltd. Vacuum distillation using suction apparatus
JP2008149209A (en) * 2006-12-14 2008-07-03 Marcom:Kk Fine air bubble producer and fine air bubble supply system
JP4916496B2 (en) * 2008-10-07 2012-04-11 株式会社リガルジョイント Fluid mixing device
FR2944218B1 (en) * 2009-04-09 2012-06-15 Total Sa EJECTOR DIPOSITIVE FOR FORMING PRESSURE MIXTURE OF LIQUID AND GAS, AND GAS COMPRESSOR COMPRISING SUCH AN EJECTOR DEVICE
CN103080564B (en) * 2010-06-29 2017-09-08 科尔德哈勃船舶有限公司 Gas-lift pump apparatus and method with ultrasonic generator
JP7064212B2 (en) * 2018-01-12 2022-05-10 国立大学法人 筑波大学 Bubble generator
CN117599962A (en) * 2023-12-21 2024-02-27 中国矿业大学 Flotation column air inflow detection control device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2317233A1 (en) * 1975-07-07 1977-02-04 Waagner Biro Ag METHOD AND DEVICE FOR THE TREATMENT OF A LIQUID
EP0093704A2 (en) * 1982-05-04 1983-11-09 VOEST-ALPINE Aktiengesellschaft Process for mixing liquids with gases
EP0093704A3 (en) * 1982-05-04 1984-06-13 Voest-Alpine Aktiengesellschaft Apparatus for mixing liquids with gases
US9004375B2 (en) 2004-02-26 2015-04-14 Tyco Fire & Security Gmbh Method and apparatus for generating a mist
US9010663B2 (en) 2004-02-26 2015-04-21 Tyco Fire & Security Gmbh Method and apparatus for generating a mist
US10507480B2 (en) 2004-02-26 2019-12-17 Tyco Fire Products Lp Method and apparatus for generating a mist
US8419378B2 (en) 2004-07-29 2013-04-16 Pursuit Dynamics Plc Jet pump
US9239063B2 (en) 2004-07-29 2016-01-19 Pursuit Marine Drive Limited Jet pump
US8789769B2 (en) 2006-09-15 2014-07-29 Tyco Fire & Security Gmbh Mist generating apparatus and method
US9931648B2 (en) 2006-09-15 2018-04-03 Tyco Fire & Security Gmbh Mist generating apparatus and method
US8193395B2 (en) 2007-05-02 2012-06-05 Pursuit Dynamics Plc Biomass treatment process and system
US8513004B2 (en) 2007-05-02 2013-08-20 Pursuit Dynamics Plc Biomass treatment process

Also Published As

Publication number Publication date
ZA744265B (en) 1975-07-30
BR7405636D0 (en) 1975-05-13
JPS5049769A (en) 1975-05-02
CA1033078A (en) 1978-06-13
AU7074874A (en) 1976-01-08
IT1015792B (en) 1977-05-20

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