WO1998032538A3 - Apparatus and method for induced air flotation - Google Patents

Apparatus and method for induced air flotation Download PDF

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Publication number
WO1998032538A3
WO1998032538A3 PCT/EP1998/000375 EP9800375W WO9832538A3 WO 1998032538 A3 WO1998032538 A3 WO 1998032538A3 EP 9800375 W EP9800375 W EP 9800375W WO 9832538 A3 WO9832538 A3 WO 9832538A3
Authority
WO
WIPO (PCT)
Prior art keywords
induced air
air flotation
annular channel
nozzle
flotation
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.)
Ceased
Application number
PCT/EP1998/000375
Other languages
French (fr)
Other versions
WO1998032538A2 (en
Inventor
Marko Zlokarnik
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19702181A external-priority patent/DE19702181A1/en
Priority claimed from DE1997119539 external-priority patent/DE19719539A1/en
Application filed by Individual filed Critical Individual
Priority to EP98904132A priority Critical patent/EP0954379A2/en
Publication of WO1998032538A2 publication Critical patent/WO1998032538A2/en
Publication of WO1998032538A3 publication Critical patent/WO1998032538A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B03D1/247—Mixing gas and slurry in a device separate from the flotation tank, i.e. reactor-separator type
    • 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
    • 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
    • B03D1/1493—Flotation machines with means for establishing a specified flow pattern

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physical Water Treatments (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

A device (10) for induced air flotation that uses a self aspirating and radially discharging funnel-shaped nozzle for producing extremely fine gas bubbles. The nozzle in addition may be used with a flotation cell (30) that consists of a mixing chamber (32) and an annular channel (34) around it thereby enabling vertical motion of the liquid through from top to bottom of the annular channel (34).
PCT/EP1998/000375 1997-01-23 1998-01-23 Apparatus and method for induced air flotation Ceased WO1998032538A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98904132A EP0954379A2 (en) 1997-01-23 1998-01-23 Apparatus and method for induced air flotation

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE19702181A DE19702181A1 (en) 1997-01-23 1997-01-23 Funnel nozzle with flow-baffling trip wires to break up laminar surface boundary layer
DE19702181.6 1997-01-23
DE19706436 1997-02-19
DE19706436.1 1997-02-19
DE19719539.3 1997-05-09
DE1997119539 DE19719539A1 (en) 1997-01-23 1997-05-09 Solid separation from suspension by induced air flotation

Publications (2)

Publication Number Publication Date
WO1998032538A2 WO1998032538A2 (en) 1998-07-30
WO1998032538A3 true WO1998032538A3 (en) 1998-12-10

Family

ID=27217054

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/000375 Ceased WO1998032538A2 (en) 1997-01-23 1998-01-23 Apparatus and method for induced air flotation

Country Status (2)

Country Link
EP (1) EP0954379A2 (en)
WO (1) WO1998032538A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT504827A1 (en) * 2007-01-23 2008-08-15 Siemens Ag Oesterreich DEVICE FOR SEPARATING LIQUID AND LIQUID, FINE DISTRIBUTED, NON-SOLUBLE PARTICLES
CH703440B1 (en) * 2010-07-12 2014-06-30 Supsi Scuola Universitaria Professionale Della Svizzera Italiana Icimsi System for the treatment of waste water.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162971A (en) * 1976-07-31 1979-07-31 Bayer Aktiengesellschaft Injectors with deflectors for their use in gassing liquids
EP0035243A2 (en) * 1980-03-05 1981-09-09 Bayer Ag Method and device for flotation
EP0514741A2 (en) * 1991-05-24 1992-11-25 Voith Sulzer Stoffaufbereitung GmbH Flotation device for removing impurities, particularly printing inks from waste paper suspensions

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162971A (en) * 1976-07-31 1979-07-31 Bayer Aktiengesellschaft Injectors with deflectors for their use in gassing liquids
EP0035243A2 (en) * 1980-03-05 1981-09-09 Bayer Ag Method and device for flotation
EP0514741A2 (en) * 1991-05-24 1992-11-25 Voith Sulzer Stoffaufbereitung GmbH Flotation device for removing impurities, particularly printing inks from waste paper suspensions

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
M. ZLOKARNIK ET AL: "Selbstansaugende und radialstrahlende Trichterdüse", CHEMIE. INGENIEUR. TECHNIK., vol. 68, no. 12, 1996, WEINHEIM DE, pages 1572 - 1574, XP002065459 *

Also Published As

Publication number Publication date
WO1998032538A2 (en) 1998-07-30
EP0954379A2 (en) 1999-11-10

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