FR2451894A1 - Aeration tank for purificn. of waste water - uses submerged air diffusers independent of paddle rotor circulation (BR 18.11.80) - Google Patents

Aeration tank for purificn. of waste water - uses submerged air diffusers independent of paddle rotor circulation (BR 18.11.80)

Info

Publication number
FR2451894A1
FR2451894A1 FR7907354A FR7907354A FR2451894A1 FR 2451894 A1 FR2451894 A1 FR 2451894A1 FR 7907354 A FR7907354 A FR 7907354A FR 7907354 A FR7907354 A FR 7907354A FR 2451894 A1 FR2451894 A1 FR 2451894A1
Authority
FR
France
Prior art keywords
tank
rotor
purificn
independent
waste water
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.)
Granted
Application number
FR7907354A
Other languages
French (fr)
Other versions
FR2451894B1 (en
Inventor
Jacques Bernard
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.)
Suez International SAS
Original Assignee
Degremont SA
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 Degremont SA filed Critical Degremont SA
Priority to FR7907354A priority Critical patent/FR2451894A1/en
Priority to AR28034580A priority patent/AR221411A1/en
Priority to BR8001642A priority patent/BR8001642A/en
Publication of FR2451894A1 publication Critical patent/FR2451894A1/en
Application granted granted Critical
Publication of FR2451894B1 publication Critical patent/FR2451894B1/fr
Granted 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
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1257—Oxidation ditches
    • 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
    • C02F3/14—Activated sludge processes using surface aeration
    • C02F3/18—Activated sludge processes using surface aeration the aerator having a horizontal axis
    • 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
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/301—Aerobic and anaerobic treatment in the same reactor
    • 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
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/302—Nitrification and denitrification treatment
    • 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)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

An aeration tank employing activated sludge for the purificn. of biologically polluted waste water. The liq. in the rectangular tank circulates around a longitudinal, vertical partition which has passages between its ends and the ends of the tank. The tank has a system for aerating the water which is independent of the circulating system. Circulation is by a multi-paddle, cylindrical rotor which turns on a horizontal axis at right angles to the partition. Aeration takes place at several points around the partition. The axis of the rotor is pref. at a higher level than the surface of liq. in the tank. The rotor pref. has between 6 and 30 paddles spaced at a pitch of not less than 5 cm. The rotor pref. turns at a rate which produces a rotor surface speed of 0.5 and 3.0 m/s. Saving of energy compared with tanks in which the aerator also circulates the liq.. At periods when the substantially aeration can be reduced without affecting the rate of circulation.
FR7907354A 1979-03-23 1979-03-23 Aeration tank for purificn. of waste water - uses submerged air diffusers independent of paddle rotor circulation (BR 18.11.80) Granted FR2451894A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7907354A FR2451894A1 (en) 1979-03-23 1979-03-23 Aeration tank for purificn. of waste water - uses submerged air diffusers independent of paddle rotor circulation (BR 18.11.80)
AR28034580A AR221411A1 (en) 1979-03-23 1980-03-18 IMPROVEMENTS IN AERATION PONDS FOR THE PURIFICATION BY ACTIVATED SEDIMENTS OF URBAN OR INDUSTRIAL POLLUTED WATERS
BR8001642A BR8001642A (en) 1979-03-23 1980-03-19 AERATION TANK FOR PURIFICATION BY ACTIVATED SLAMS OF URBAN OR INDUSTRIAL POLLUTED WATERS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7907354A FR2451894A1 (en) 1979-03-23 1979-03-23 Aeration tank for purificn. of waste water - uses submerged air diffusers independent of paddle rotor circulation (BR 18.11.80)

Publications (2)

Publication Number Publication Date
FR2451894A1 true FR2451894A1 (en) 1980-10-17
FR2451894B1 FR2451894B1 (en) 1983-09-16

Family

ID=9223481

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7907354A Granted FR2451894A1 (en) 1979-03-23 1979-03-23 Aeration tank for purificn. of waste water - uses submerged air diffusers independent of paddle rotor circulation (BR 18.11.80)

Country Status (3)

Country Link
AR (1) AR221411A1 (en)
BR (1) BR8001642A (en)
FR (1) FR2451894A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB176494A (en) * 1920-12-07 1922-03-07 John William Hartley Improvements in purification of sewage
US3703462A (en) * 1971-01-06 1972-11-21 George W Smith Sewage treatment apparatus and method
US3900394A (en) * 1972-06-06 1975-08-19 Activox Inc Process for total sewage treatment
DE2427550A1 (en) * 1974-06-07 1975-12-18 Menzel & Co Gasification of fluids, esp. for sewage purificn. - with agitation and aeration by separate aggregates, with intermittent working
GB1497043A (en) * 1975-02-11 1978-01-05 Ames Crosta Babcock Ltd Aeration of liquids

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB176494A (en) * 1920-12-07 1922-03-07 John William Hartley Improvements in purification of sewage
US3703462A (en) * 1971-01-06 1972-11-21 George W Smith Sewage treatment apparatus and method
US3900394A (en) * 1972-06-06 1975-08-19 Activox Inc Process for total sewage treatment
DE2427550A1 (en) * 1974-06-07 1975-12-18 Menzel & Co Gasification of fluids, esp. for sewage purificn. - with agitation and aeration by separate aggregates, with intermittent working
GB1497043A (en) * 1975-02-11 1978-01-05 Ames Crosta Babcock Ltd Aeration of liquids

Also Published As

Publication number Publication date
FR2451894B1 (en) 1983-09-16
AR221411A1 (en) 1981-01-30
BR8001642A (en) 1980-11-18

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