FR2275407A1 - Stirred aeration tank for water purificn. - by activated sludge, with horizontal circulator to enhance air contact - Google Patents

Stirred aeration tank for water purificn. - by activated sludge, with horizontal circulator to enhance air contact

Info

Publication number
FR2275407A1
FR2275407A1 FR7421732A FR7421732A FR2275407A1 FR 2275407 A1 FR2275407 A1 FR 2275407A1 FR 7421732 A FR7421732 A FR 7421732A FR 7421732 A FR7421732 A FR 7421732A FR 2275407 A1 FR2275407 A1 FR 2275407A1
Authority
FR
France
Prior art keywords
horizontal
activated sludge
water
circulator
aeration tank
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
FR7421732A
Other languages
French (fr)
Other versions
FR2275407B1 (en
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.)
Menzel and Co
Original Assignee
Menzel and Co
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 Menzel and Co filed Critical Menzel and Co
Priority to FR7421732A priority Critical patent/FR2275407A1/en
Publication of FR2275407A1 publication Critical patent/FR2275407A1/en
Application granted granted Critical
Publication of FR2275407B1 publication Critical patent/FR2275407B1/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
    • C02F3/20—Activated sludge processes using diffusers
    • 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)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

Waste water is purified, by treatment with activated sludge, in an e.g. shallow cylindrical tank, fitted with a horizontal shrouded impeller at its bottom near the periphery, which induces horizontal circular flow maintained by down stream baffle vanes. Aeration inlets, close to the bottom, are more extensive near periphery, and vertical mixing is induced at axis of tank by a right conical deflector. Water is fed via an inlet syphon, just upstream of impeller in line with its axis, and exits via a peripheral outlet. Efficient stirring is produced by an economical appts. and air/water contact time is enhanced since rate of rise of bubbles is determined only by their bouyancy.
FR7421732A 1974-06-21 1974-06-21 Stirred aeration tank for water purificn. - by activated sludge, with horizontal circulator to enhance air contact Granted FR2275407A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7421732A FR2275407A1 (en) 1974-06-21 1974-06-21 Stirred aeration tank for water purificn. - by activated sludge, with horizontal circulator to enhance air contact

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7421732A FR2275407A1 (en) 1974-06-21 1974-06-21 Stirred aeration tank for water purificn. - by activated sludge, with horizontal circulator to enhance air contact

Publications (2)

Publication Number Publication Date
FR2275407A1 true FR2275407A1 (en) 1976-01-16
FR2275407B1 FR2275407B1 (en) 1978-01-13

Family

ID=9140390

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7421732A Granted FR2275407A1 (en) 1974-06-21 1974-06-21 Stirred aeration tank for water purificn. - by activated sludge, with horizontal circulator to enhance air contact

Country Status (1)

Country Link
FR (1) FR2275407A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109928526A (en) * 2019-04-30 2019-06-25 河南恒海环保技术有限公司 A kind of multiple jet aerator and method
CN116986742A (en) * 2023-09-20 2023-11-03 济南林源环保工程有限公司 Organic wastewater treatment device and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109928526A (en) * 2019-04-30 2019-06-25 河南恒海环保技术有限公司 A kind of multiple jet aerator and method
CN116986742A (en) * 2023-09-20 2023-11-03 济南林源环保工程有限公司 Organic wastewater treatment device and method
CN116986742B (en) * 2023-09-20 2023-12-29 济南林源环保工程有限公司 Organic wastewater treatment device and method

Also Published As

Publication number Publication date
FR2275407B1 (en) 1978-01-13

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Legal Events

Date Code Title Description
ST Notification of lapse