FR2379313A1 - Appts. for introducing gas into solids-liquid suspension - having gas ejector in treatment vessel, with lower opening of outlet cone directed towards bottom of vessel - Google Patents

Appts. for introducing gas into solids-liquid suspension - having gas ejector in treatment vessel, with lower opening of outlet cone directed towards bottom of vessel

Info

Publication number
FR2379313A1
FR2379313A1 FR7704274A FR7704274A FR2379313A1 FR 2379313 A1 FR2379313 A1 FR 2379313A1 FR 7704274 A FR7704274 A FR 7704274A FR 7704274 A FR7704274 A FR 7704274A FR 2379313 A1 FR2379313 A1 FR 2379313A1
Authority
FR
France
Prior art keywords
vessel
solids
gas
liquid
appts
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
FR7704274A
Other languages
French (fr)
Other versions
FR2379313B1 (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.)
Sabla SA
Original Assignee
Sabla 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 Sabla SA filed Critical Sabla SA
Priority to FR7704274A priority Critical patent/FR2379313A1/en
Publication of FR2379313A1 publication Critical patent/FR2379313A1/en
Application granted granted Critical
Publication of FR2379313B1 publication Critical patent/FR2379313B1/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
    • C02F3/1278—Provisions for mixing or aeration of the mixed liquor
    • C02F3/1294—"Venturi" aeration means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
    • B01F33/403—Mixers using gas or liquid agitation, e.g. with air supply tubes for mixing liquids
    • 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

Abstract

Vessel has an inlet for the liquid to be treated and an outlet for the treated liquid. The liquid is stirred and gas introduced by a venturi ejector arranged a little below the level beneath which the suspended materials normally rest with the lower opening of its outlet cone directed towards the bottom of the vessel. Pref. the opening is about 50 cm above the bottom. The outlet cone may be vertical, pref. co-axial with the vertical axis of the vessel, and an upright solid cone may be located on the bottom of the vessel also co-axial with said axis. As well as purifying waste water by oxygenation, for example as in a known activated sludge process, appts. can be used for any process in which a liquid contg. suspended solids is to be treated by intimate contact with a gas so as to obtain e.g. after decanting, the deposit of the solids. Appts. avoids the risk of blocking of the pump in the ejector, after a period of shutdown, by settlement of the solids and is less affected by sudden changes in liquid level. The gas dispersion is more efficient.
FR7704274A 1977-02-07 1977-02-07 Appts. for introducing gas into solids-liquid suspension - having gas ejector in treatment vessel, with lower opening of outlet cone directed towards bottom of vessel Granted FR2379313A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7704274A FR2379313A1 (en) 1977-02-07 1977-02-07 Appts. for introducing gas into solids-liquid suspension - having gas ejector in treatment vessel, with lower opening of outlet cone directed towards bottom of vessel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7704274A FR2379313A1 (en) 1977-02-07 1977-02-07 Appts. for introducing gas into solids-liquid suspension - having gas ejector in treatment vessel, with lower opening of outlet cone directed towards bottom of vessel

Publications (2)

Publication Number Publication Date
FR2379313A1 true FR2379313A1 (en) 1978-09-01
FR2379313B1 FR2379313B1 (en) 1980-12-05

Family

ID=9186765

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7704274A Granted FR2379313A1 (en) 1977-02-07 1977-02-07 Appts. for introducing gas into solids-liquid suspension - having gas ejector in treatment vessel, with lower opening of outlet cone directed towards bottom of vessel

Country Status (1)

Country Link
FR (1) FR2379313A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466275A1 (en) * 1979-10-03 1981-04-10 Serck Industries Ltd Liq. and gas mixing device - in which liq. is injected under pressure into container and gas is entrained laterally before entering mixer tube
FR2555464A1 (en) * 1983-11-25 1985-05-31 Sabla Sa Plant for treating polluted gas by a wet route
CN112049187A (en) * 2020-09-14 2020-12-08 中国人民解放军31666部队 High-cold area well water anti-freezing device utilizing high-pressure gas interference
CN112795433A (en) * 2021-03-19 2021-05-14 江西天佳生物工程股份有限公司 Plant essential oil and separation and purification method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466275A1 (en) * 1979-10-03 1981-04-10 Serck Industries Ltd Liq. and gas mixing device - in which liq. is injected under pressure into container and gas is entrained laterally before entering mixer tube
FR2555464A1 (en) * 1983-11-25 1985-05-31 Sabla Sa Plant for treating polluted gas by a wet route
CN112049187A (en) * 2020-09-14 2020-12-08 中国人民解放军31666部队 High-cold area well water anti-freezing device utilizing high-pressure gas interference
CN112795433A (en) * 2021-03-19 2021-05-14 江西天佳生物工程股份有限公司 Plant essential oil and separation and purification method thereof
CN112795433B (en) * 2021-03-19 2021-07-27 江西天佳生物工程股份有限公司 Mixing apparatus of plant essential oil

Also Published As

Publication number Publication date
FR2379313B1 (en) 1980-12-05

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse