NL7411362A - Aerator for waste water ponds - with scoops having an open figure nine shaped cross section rotating at the surface - Google Patents

Aerator for waste water ponds - with scoops having an open figure nine shaped cross section rotating at the surface

Info

Publication number
NL7411362A
NL7411362A NL7411362A NL7411362A NL7411362A NL 7411362 A NL7411362 A NL 7411362A NL 7411362 A NL7411362 A NL 7411362A NL 7411362 A NL7411362 A NL 7411362A NL 7411362 A NL7411362 A NL 7411362A
Authority
NL
Netherlands
Prior art keywords
scoops
aerator
open
water
waste water
Prior art date
Application number
NL7411362A
Other languages
Dutch (nl)
Other versions
NL155244B (en
Original Assignee
Esmil Bv
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 Esmil Bv filed Critical Esmil Bv
Priority to NL7411362A priority Critical patent/NL155244B/en
Publication of NL7411362A publication Critical patent/NL7411362A/en
Publication of NL155244B publication Critical patent/NL155244B/en

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
    • C02F3/14—Activated sludge processes using surface aeration
    • C02F3/16—Activated sludge processes using surface aeration the aerator having a vertical axis
    • 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
    • B01F23/234—Surface aerating
    • B01F23/2342—Surface aerating with stirrers near to the liquid surface, e.g. partially immersed, for spraying the liquid in the gas or for sucking gas into the liquid, e.g. using stirrers rotating around a horizontal axis or using centrifugal force
    • B01F23/23421—Surface aerating with stirrers near to the liquid surface, e.g. partially immersed, for spraying the liquid in the gas or for sucking gas into the liquid, e.g. using stirrers rotating around a horizontal axis or using centrifugal force the stirrers rotating about a vertical axis
    • B01F23/234211—Stirrers thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/116—Stirrers shaped as cylinders, balls or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B01F27/1123—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades sickle-shaped, i.e. curved in at least one direction
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • 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)
  • Organic Chemistry (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

An aerator for waste water ponds has a disc with scoops rotating at the surface to disturb the surface and bring air into the water. The scoops are shaped in cross section like an open figure 9 which moves to the left through the water. Besides drawing air under the surface the scoops induce circulation in the water, bringing stagnant water from the bottom to the surface. Thus the driving force for soln. of oxygen is large and the best use is made of the energy expanded. No oscillation of the surface is caused.
NL7411362A 1974-08-27 1974-08-27 AERATION ROTOR. NL155244B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7411362A NL155244B (en) 1974-08-27 1974-08-27 AERATION ROTOR.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7411362A NL155244B (en) 1974-08-27 1974-08-27 AERATION ROTOR.

Publications (2)

Publication Number Publication Date
NL7411362A true NL7411362A (en) 1976-03-02
NL155244B NL155244B (en) 1977-12-15

Family

ID=19821973

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7411362A NL155244B (en) 1974-08-27 1974-08-27 AERATION ROTOR.

Country Status (1)

Country Link
NL (1) NL155244B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5198156A (en) * 1986-02-17 1993-03-30 Imperial Chemical Industries Plc Agitators
EP2247537A1 (en) * 2008-01-02 2010-11-10 Jet, Inc. Aspirator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5198156A (en) * 1986-02-17 1993-03-30 Imperial Chemical Industries Plc Agitators
EP2247537A1 (en) * 2008-01-02 2010-11-10 Jet, Inc. Aspirator
EP2247537A4 (en) * 2008-01-02 2012-12-12 Jet Inc Aspirator

Also Published As

Publication number Publication date
NL155244B (en) 1977-12-15

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: ESMIL