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

Apparatus and method for induced air flotation Download PDF

Info

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
Application number
PCT/EP1998/000375
Other languages
French (fr)
Other versions
WO1998032538A2 (en
Inventor
Marko Zlokarnik
Original Assignee
Marko Zlokarnik
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 Marko Zlokarnik filed Critical Marko Zlokarnik
Priority to EP98904132A priority Critical patent/EP0954379A2/en
Publication of WO1998032538A2 publication Critical patent/WO1998032538A2/en
Publication of WO1998032538A3 publication Critical patent/WO1998032538A3/en

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 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
DE19702181.6 1997-01-23
DE19702181A DE19702181A1 (en) 1997-01-23 1997-01-23 Funnel nozzle with flow-baffling trip wires to break up laminar surface boundary layer
DE19706436.1 1997-02-19
DE19706436 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 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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