NL7700350A - METHOD AND DEVICE FOR FORMING GAS BUBBLES IN A LIQUID. - Google Patents

METHOD AND DEVICE FOR FORMING GAS BUBBLES IN A LIQUID.

Info

Publication number
NL7700350A
NL7700350A NL7700350A NL7700350A NL7700350A NL 7700350 A NL7700350 A NL 7700350A NL 7700350 A NL7700350 A NL 7700350A NL 7700350 A NL7700350 A NL 7700350A NL 7700350 A NL7700350 A NL 7700350A
Authority
NL
Netherlands
Prior art keywords
water
liquid
gas bubbles
forming gas
volume
Prior art date
Application number
NL7700350A
Other languages
Dutch (nl)
Original Assignee
Cem Comp Electro Mec
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 Cem Comp Electro Mec filed Critical Cem Comp Electro Mec
Publication of NL7700350A publication Critical patent/NL7700350A/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
    • 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
    • B01F23/2323—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 by circulating the flow in guiding constructions or conduits
    • B01F23/23231—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 by circulating the flow in guiding constructions or conduits being at least partially immersed in the liquid, e.g. in a closed circuit
    • 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
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/45—Mixing liquids with liquids; Emulsifying using flow mixing
    • B01F23/454—Mixing liquids with liquids; Emulsifying using flow mixing by injecting a mixture of liquid and gas
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/02—Froth-flotation processes
    • B03D1/028—Control and monitoring of flotation processes; computer models therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1412—Flotation machines with baffles, e.g. at the wall for redirecting settling solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1431—Dissolved air flotation machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/24—Pneumatic
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • 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
    • 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)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biotechnology (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Separation By Absorption (AREA)
  • Physical Water Treatments (AREA)

Abstract

A venturi (2, 5) fed with water under pressure draws in ambient air and sends an emulsion into a volume (6) partly filled with water under pressure P1. A second ejector (9) is placed in the volume (6) and used to saturate water with air at the pressure P1. An outlet pipe (15) through which the saturated water comes out comprises a pressure drop (16) at which desorption bubbles are formed. The device is employed in flotation plants, for example for water purification. <IMAGE>
NL7700350A 1976-01-16 1977-01-14 METHOD AND DEVICE FOR FORMING GAS BUBBLES IN A LIQUID. NL7700350A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7601113A FR2338071A1 (en) 1976-01-16 1976-01-16 METHOD AND DEVICE FOR THE FORMATION OF GAS BUBBLES, FOR EXAMPLE WITH A VIEW OF FLOTATION

Publications (1)

Publication Number Publication Date
NL7700350A true NL7700350A (en) 1977-07-19

Family

ID=9168028

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7700350A NL7700350A (en) 1976-01-16 1977-01-14 METHOD AND DEVICE FOR FORMING GAS BUBBLES IN A LIQUID.

Country Status (8)

Country Link
BE (1) BE850362A (en)
CH (1) CH609581A5 (en)
DE (1) DE2701702A1 (en)
FR (1) FR2338071A1 (en)
GB (1) GB1549523A (en)
IT (1) IT1067580B (en)
NL (1) NL7700350A (en)
SE (1) SE7700226L (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3101221C2 (en) * 1981-01-16 1983-09-22 J.M. Voith Gmbh, 7920 Heidenheim "Facility for foam flotation"
FR2550469B1 (en) * 1983-08-09 1985-10-04 Alsthom Atlantique MICROBUBBLE INJECTOR
FR2552343B1 (en) * 1983-09-27 1989-02-03 Rech Geolog Miniere FLOATING SEPARATION METHOD AND APPARATUS
ATE105510T1 (en) * 1986-09-25 1994-05-15 Univ Newcastle Res Ass COLUMN FLOTATION METHOD AND APPARATUS.
KR930702065A (en) * 1990-08-27 1993-09-08 스테판 제이.웰링크 Aeration of liquid
DE4224912A1 (en) * 1991-12-02 1993-06-03 Tech Resources Pty Ltd REACTOR
JP3161734B2 (en) 1991-12-02 2001-04-25 テクノロジカル リソーシィズ プロプライエタリー リミテッド Reactor
DE4206206C2 (en) * 1992-02-28 1993-11-25 Voith Gmbh J M Process for cleaning the rejects from deinking flotation
US5512217A (en) * 1992-07-09 1996-04-30 Technological Resources Pty. Limited Reactor and method of use
JPH06134449A (en) * 1992-10-22 1994-05-17 Tokai Kosan:Kk Method and device for purifying low concentration sewage
AT410406B (en) * 2001-09-17 2003-04-25 Andritz Ag Maschf METHOD AND DEVICE FOR VENTILATING A LIQUID WITH GAS

Also Published As

Publication number Publication date
CH609581A5 (en) 1979-03-15
FR2338071B1 (en) 1979-07-13
IT1067580B (en) 1985-03-16
SE7700226L (en) 1977-07-17
GB1549523A (en) 1979-08-08
FR2338071A1 (en) 1977-08-12
DE2701702A1 (en) 1977-07-28
BE850362A (en) 1977-05-02

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Legal Events

Date Code Title Description
BV The patent application has lapsed
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
BV The patent application has lapsed