FR2256902A1 - Waste water and sewage treatment - with dissolved oxygen and activated sludge by an ejector - Google Patents

Waste water and sewage treatment - with dissolved oxygen and activated sludge by an ejector

Info

Publication number
FR2256902A1
FR2256902A1 FR7500170A FR7500170A FR2256902A1 FR 2256902 A1 FR2256902 A1 FR 2256902A1 FR 7500170 A FR7500170 A FR 7500170A FR 7500170 A FR7500170 A FR 7500170A FR 2256902 A1 FR2256902 A1 FR 2256902A1
Authority
FR
France
Prior art keywords
sludge
activated sludge
oxygen
gas
nozzle
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.)
Withdrawn
Application number
FR7500170A
Other languages
English (en)
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.)
BASF SE
Original Assignee
BASF SE
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
Priority claimed from DE19742400416 external-priority patent/DE2400416C3/de
Application filed by BASF SE filed Critical BASF SE
Publication of FR2256902A1 publication Critical patent/FR2256902A1/fr
Withdrawn legal-status Critical Current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
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/45—Mixing liquids with liquids; Emulsifying using flow mixing
    • B01F23/454—Mixing liquids with liquids; Emulsifying using flow mixing by injecting a mixture of liquid and gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/21—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers
    • B01F25/211—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers the injectors being surrounded by guiding tubes
    • 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
    • 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
    • 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)
  • Activated Sludge Processes (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
FR7500170A 1974-01-05 1975-01-03 Waste water and sewage treatment - with dissolved oxygen and activated sludge by an ejector Withdrawn FR2256902A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742400416 DE2400416C3 (de) 1974-01-05 Verfahren zum Behandeln von Abwasser

Publications (1)

Publication Number Publication Date
FR2256902A1 true FR2256902A1 (en) 1975-08-01

Family

ID=5904197

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7500170A Withdrawn FR2256902A1 (en) 1974-01-05 1975-01-03 Waste water and sewage treatment - with dissolved oxygen and activated sludge by an ejector

Country Status (6)

Country Link
JP (1) JPS5098158A (enrdf_load_stackoverflow)
AT (1) ATA3875A (enrdf_load_stackoverflow)
BE (1) BE824072A (enrdf_load_stackoverflow)
DK (1) DK682774A (enrdf_load_stackoverflow)
FR (1) FR2256902A1 (enrdf_load_stackoverflow)
NL (1) NL7417053A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520024A1 (fr) * 1982-01-14 1983-07-22 Kharchenko Mikhail Deversoir de barrage
EP0801989A1 (de) * 1996-04-17 1997-10-22 Voith Sulzer Stoffaufbereitung GmbH Flotationsverfahren und Mischvorrichtung zu seiner Durchführung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7178082B2 (ja) * 2018-10-19 2022-11-25 アクアインテック株式会社 攪拌槽

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520024A1 (fr) * 1982-01-14 1983-07-22 Kharchenko Mikhail Deversoir de barrage
EP0801989A1 (de) * 1996-04-17 1997-10-22 Voith Sulzer Stoffaufbereitung GmbH Flotationsverfahren und Mischvorrichtung zu seiner Durchführung
US6129212A (en) * 1996-04-17 2000-10-10 Voith Sulzer Stoffaufbereitung Gmbh Flotation process and mixing device

Also Published As

Publication number Publication date
DK682774A (enrdf_load_stackoverflow) 1975-09-08
DE2400416B2 (de) 1976-06-10
NL7417053A (nl) 1975-07-08
BE824072A (fr) 1975-07-03
JPS5098158A (enrdf_load_stackoverflow) 1975-08-04
DE2400416A1 (de) 1975-07-24
ATA3875A (de) 1976-10-15

Similar Documents

Publication Publication Date Title
GB1326457A (en) Method and apparatus for dissolving gas in and stripping gas from water
GB1418584A (en) Process and apparatus for treatment of waste water
ES381327A1 (es) Un metodo para tratar agua que contiene material bioquimi- camente oxidable.
FR2256902A1 (en) Waste water and sewage treatment - with dissolved oxygen and activated sludge by an ejector
FR2214510A1 (en) Oxygenation of effluent streams contg. organic matl. - using pure oxygen with pumped recirculation where downward velocity is slightly less than bubble rise
FR2126610A5 (en) Liquid degasifier - with recycling to obtain complete degasification
GB1486697A (en) Process and installation for the purification of sewage
GB1303163A (enrdf_load_stackoverflow)
FR2352580A2 (fr) Dispositif d'injection d'un gaz dans un liquide
GB976805A (en) Improved process and apparatus for sewage clarification by means of activated sludge
FR2437866A1 (fr) Dispositif d'injection de bulles de gaz dans un liquide
FR2326384A1 (fr) Aerateur a jet pour installation d'epuration des eaux usees
JPS5615831A (en) Aerator
Wuhrmann Effect of oxygen tension on biochemical reactions in biological treatment plants
ES399586A1 (es) Perfeccionamientos introducidos en instalaciones para la purificacion de liquidos por flotacion.
Jackson et al. Oxygen Transfer in a 23-Meter Bubble Column
ES443054A1 (es) Un metodo para introducir oxigeno en una masa de aguas resi-duales contenida en un recipiente.
GB974211A (en) Apparatus for treating an aqueous solution to remove impurities therefrom
SU505439A1 (ru) Устройство дл флотационной очистки сточных вод
FR2302131A1 (fr) Dispositif d'injection d'un gaz dans un liquide
FR2421669A1 (fr) Procede de traitement d'un liquide par un gaz, notamment d'eaux residuaires par l'oxygene
GB1428943A (en) Method of and apparatus for dissolving gases in liquids
NL7303457A (en) Waste liquid burner - using a gas injected at supersonic speed
JPS54113955A (en) Separation of solid from methane fermentation digestive fluid
GB1231297A (enrdf_load_stackoverflow)

Legal Events

Date Code Title Description
RE Withdrawal of published application