FR2050843A5 - Foam block for effluent-treating aeration - basis - Google Patents

Foam block for effluent-treating aeration - basis

Info

Publication number
FR2050843A5
FR2050843A5 FR6921496A FR6921496A FR2050843A5 FR 2050843 A5 FR2050843 A5 FR 2050843A5 FR 6921496 A FR6921496 A FR 6921496A FR 6921496 A FR6921496 A FR 6921496A FR 2050843 A5 FR2050843 A5 FR 2050843A5
Authority
FR
France
Prior art keywords
block
hollow area
air
effluent
basis
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.)
Expired
Application number
FR6921496A
Other languages
French (fr)
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.)
Xylem Water Solutions AB
Original Assignee
Stenberg Flygt 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 Stenberg Flygt AB filed Critical Stenberg Flygt AB
Priority to FR6921496A priority Critical patent/FR2050843A5/en
Application granted granted Critical
Publication of FR2050843A5 publication Critical patent/FR2050843A5/en
Expired legal-status Critical Current

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
    • C02F3/20—Activated sludge processes using diffusers
    • C02F3/201—Perforated, resilient plastic diffusers, e.g. membranes, sheets, foils, tubes, hoses
    • 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
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—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
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23123—Diffusers consisting of rigid porous or perforated material
    • B01F23/231233—Diffusers consisting of rigid porous or perforated material comprising foam-like gas outlets
    • 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)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

The foam block has open cells and a hollow area which can be connected to a source of pressurised air and placed under excess pressure, so that the pores expand and allow the air to excape in small bubbles. The air, as it passes through the pores takes any sludge or impurities with it. The length of the block is at least a tenth power of its height and the hollow area on the underside of the block is formed between a riding sheet metal or hard plastic block support and the block itsef. The hollow area can be drained by areas of foam material.
FR6921496A 1969-06-26 1969-06-26 Foam block for effluent-treating aeration - basis Expired FR2050843A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR6921496A FR2050843A5 (en) 1969-06-26 1969-06-26 Foam block for effluent-treating aeration - basis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6921496A FR2050843A5 (en) 1969-06-26 1969-06-26 Foam block for effluent-treating aeration - basis

Publications (1)

Publication Number Publication Date
FR2050843A5 true FR2050843A5 (en) 1971-04-02

Family

ID=9036429

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6921496A Expired FR2050843A5 (en) 1969-06-26 1969-06-26 Foam block for effluent-treating aeration - basis

Country Status (1)

Country Link
FR (1) FR2050843A5 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2218291A1 (en) * 1973-02-19 1974-09-13 Steuler Industriewerke Gmbh Oxidising foul-smelling substances in waste water - esp. from food and allied industries and sewage generally, by air and possibly other gases
FR2427840A1 (en) * 1978-06-05 1980-01-04 Didier Werke Ag Air inlet pipe for gas distribution in liq. - esp. for waste water and sewage treatment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2218291A1 (en) * 1973-02-19 1974-09-13 Steuler Industriewerke Gmbh Oxidising foul-smelling substances in waste water - esp. from food and allied industries and sewage generally, by air and possibly other gases
FR2427840A1 (en) * 1978-06-05 1980-01-04 Didier Werke Ag Air inlet pipe for gas distribution in liq. - esp. for waste water and sewage treatment

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Legal Events

Date Code Title Description
ST Notification of lapse