FI45748B - - Google Patents

Info

Publication number
FI45748B
FI45748B FI230266A FI230266A FI45748B FI 45748 B FI45748 B FI 45748B FI 230266 A FI230266 A FI 230266A FI 230266 A FI230266 A FI 230266A FI 45748 B FI45748 B FI 45748B
Authority
FI
Finland
Prior art keywords
sludge
sewage
purac
floated
effluent
Prior art date
Application number
FI230266A
Other languages
Finnish (fi)
Other versions
FI45748C (en
Inventor
E Lundin
L Recksen
Original Assignee
Purac Ab
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 Purac Ab filed Critical Purac Ab
Publication of FI45748B publication Critical patent/FI45748B/fi
Application granted granted Critical
Publication of FI45748C publication Critical patent/FI45748C/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
    • B03D1/24—Pneumatic
    • B03D1/26—Air lift 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
    • B03D1/1412—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
    • B03D1/1443—Feed or discharge mechanisms for flotation tanks
    • B03D1/1462—Discharge mechanisms for the froth
    • 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
    • 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

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)

Abstract

1,134,763. Treating sewage. PURAC A.B. 17 Aug., 1966 [28 Oct., 1965], No. 36841/66. Heading C1C. [Also in Division B2] Sewage is treated with gases to float the solid matter for surface collection after if desired a chemical pretreatment. Effluent is supplied to pipe 25 for the solids to be floated by the air/purified water mixture from pipes 31 and 29. The sludge is removed by a scraper (not shown) into wells 35 while the purified liquid leaves via weirs 21. The cylindrical insert 11 in the polygonal tank 1 gives an even distribution of sludge on the surface.
FI230266A 1965-10-28 1966-09-02 Flotation tank FI45748C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1393465 1965-10-28

Publications (2)

Publication Number Publication Date
FI45748B true FI45748B (en) 1972-05-31
FI45748C FI45748C (en) 1972-09-11

Family

ID=20298257

Family Applications (1)

Application Number Title Priority Date Filing Date
FI230266A FI45748C (en) 1965-10-28 1966-09-02 Flotation tank

Country Status (5)

Country Link
BE (1) BE685963A (en)
FI (1) FI45748C (en)
FR (1) FR1504015A (en)
GB (1) GB1134763A (en)
NL (1) NL6612765A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001053204A1 (en) * 2000-01-19 2001-07-26 Ari Pekka Syynimaa A method for treatment of hexavalent chromium compounds in waste water originating from processing of metals

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0441230B1 (en) * 1990-02-09 1994-07-13 Masakatsu Ozawa Apparatus for separation by pressurization and flotation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001053204A1 (en) * 2000-01-19 2001-07-26 Ari Pekka Syynimaa A method for treatment of hexavalent chromium compounds in waste water originating from processing of metals

Also Published As

Publication number Publication date
FI45748C (en) 1972-09-11
NL6612765A (en) 1967-05-02
FR1504015A (en) 1967-12-01
GB1134763A (en) 1968-11-27
BE685963A (en) 1967-02-01

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