DK2175973T3 - Activated sludge stirrer - Google Patents

Activated sludge stirrer

Info

Publication number
DK2175973T3
DK2175973T3 DK08784897.4T DK08784897T DK2175973T3 DK 2175973 T3 DK2175973 T3 DK 2175973T3 DK 08784897 T DK08784897 T DK 08784897T DK 2175973 T3 DK2175973 T3 DK 2175973T3
Authority
DK
Denmark
Prior art keywords
stirring body
stirring
flow
circumferential boundary
transport ribs
Prior art date
Application number
DK08784897.4T
Other languages
Danish (da)
Inventor
Marcus Hoefken
Original Assignee
Invent Umwelt & Verfahrenstech
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39926580&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DK2175973(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Invent Umwelt & Verfahrenstech filed Critical Invent Umwelt & Verfahrenstech
Application granted granted Critical
Publication of DK2175973T3 publication Critical patent/DK2175973T3/en

Links

Classifications

    • 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
    • B01F27/117—Stirrers provided with conical-shaped elements, e.g. funnel-shaped
    • 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
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • 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
    • B01F27/111—Centrifugal stirrers, i.e. stirrers with radial outlets; Stirrers of the turbine type, e.g. with means to guide the flow

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Treatment Of Sludge (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

The invention relates to a stirring device for activated sludges comprising a hyperboloid stirring body (1) attached to a shaft (2), wherein a plurality of transport ribs (3) are provided on the top (O) of the stirring body (1) running toward the circumferential boundary (UM) thereof, wherein the transport ribs (3) have an oblique course, at least in sections, relative to a radial direction, and wherein the oblique position of the transport ribs (3) is selected such that, when the stirring body (1) rotates in a predetermined rotational direction (R), a flow (S) is generated that is directed outward away from the circumferential boundary (UM) of the stirring body (1). In order to improve the efficiency of the stirring device, the invention proposes that a flow guidance device (7) for guiding the flow (S) generated by the stirring body (1) be provided in a plane running substantially perpendicular to the shaft (2), said flow guidance device surrounding the circumferential boundary (UM) of the stirring body (1) and being relatively fixed thereto.
DK08784897.4T 2007-08-09 2008-07-18 Activated sludge stirrer DK2175973T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007037585 2007-08-09
PCT/EP2008/005923 WO2009018915A1 (en) 2007-08-09 2008-07-18 Stirring device for activated sludges

Publications (1)

Publication Number Publication Date
DK2175973T3 true DK2175973T3 (en) 2011-08-29

Family

ID=39926580

Family Applications (1)

Application Number Title Priority Date Filing Date
DK08784897.4T DK2175973T3 (en) 2007-08-09 2008-07-18 Activated sludge stirrer

Country Status (13)

Country Link
US (1) US20100196165A1 (en)
EP (1) EP2175973B1 (en)
JP (1) JP5307812B2 (en)
CN (1) CN101778665B (en)
AT (1) ATE510613T1 (en)
BR (1) BRPI0814951B1 (en)
DK (1) DK2175973T3 (en)
EG (1) EG25611A (en)
ES (1) ES2366873T3 (en)
IL (1) IL203596A (en)
PL (1) PL2175973T3 (en)
WO (1) WO2009018915A1 (en)
ZA (1) ZA201000605B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007037586B3 (en) * 2007-08-09 2008-09-18 Invent Umwelt- Und Verfahrenstechnik Ag Stirring device for activated sludge
IT1403045B1 (en) * 2010-04-14 2013-09-27 Formest Srl SUBMERSIBLE AERATOR
DE102013225659A1 (en) * 2013-12-11 2015-06-11 Invent Umwelt- Und Verfahrenstechnik Ag Device for circulating a liquid received in a container
DE102013225658A1 (en) * 2013-12-11 2015-06-11 Invent Umwelt- Und Verfahrenstechnik Ag Agitator and stirrer for generating a flow in a waste water treatment tank
DE102013225662A1 (en) * 2013-12-11 2015-06-11 Invent Umwelt- Und Verfahrenstechnik Ag Stirring device for circulating wastewater and equipment received in a basin
US10173184B2 (en) * 2015-03-25 2019-01-08 Schlumberger Technology Corporation Blender for mixing and pumping solids and fluids and method of use thereof
DE102018119039A1 (en) * 2018-08-06 2020-02-06 Invent Umwelt-Und Verfahrenstechnik Ag Immersion mixer for circulating drinking water
CN109110921A (en) * 2018-10-09 2019-01-01 浙江海拓环境技术有限公司 A kind of waste water denitrification denitrogenation reactor
CN110207219A (en) * 2018-10-18 2019-09-06 华帝股份有限公司 Flow guide device, fan system using same and range hood
DE102019101416B4 (en) * 2018-12-03 2020-07-16 Invent Umwelt- Und Verfahrenstechnik Ag Hyperboloid stirring body for circulating liquids as well as stirring and gassing equipment

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US3820759A (en) * 1972-06-05 1974-06-28 Hege Avanced Syst Corp Centrifugal mixing apparatus and method
US3917763A (en) * 1972-09-05 1975-11-04 Werner Frank D Aerator
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DE3603466A1 (en) * 1985-05-31 1987-08-06 Franz Dr Ing Nestmann Apparatus for introducing gas into and circulating liquids in tanks
DE4218027A1 (en) * 1991-05-30 1992-12-03 Marcus Dipl Ing Hoefken Fluid agitation and aeration - has hyperboloid agitator body which separates actions for min. energy consumption
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DE9316251U1 (en) * 1993-10-25 1994-02-10 Charatjan, Manuela, 76332 Bad Herrenalb Device for stirring or for stirring and simultaneously gassing liquids, suspensions and heterogeneous fluids
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DE10221824C1 (en) * 2002-05-10 2003-09-11 Schulz Verfahrenstechnik Gmbh Turbulent hydrodynamic mixer for solid - liquid systems in wastewater treatment, employs rotor on vertical shaft, whirlpool breaker and bed of fluidization spheres
DE20207376U1 (en) * 2002-05-10 2003-06-26 Invent Umwelt & Verfahrenstech Stirring and gassing device for activated sludge
JP4104965B2 (en) * 2002-12-09 2008-06-18 株式会社鶴見製作所 Underwater aeration equipment
JP2004188259A (en) * 2002-12-09 2004-07-08 Tsurumi Mfg Co Ltd Underwater aeration apparatus
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JP2006061780A (en) * 2004-08-25 2006-03-09 Kobelco Eco-Solutions Co Ltd Aerator and defoaming method in the aerator
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DE102005016948B3 (en) * 2005-04-12 2007-01-04 Invent Umwelt-Und Verfahrenstechnik Ag Stirring device and process for wastewater treatment
JP2007090218A (en) * 2005-09-28 2007-04-12 Kobelco Eco-Solutions Co Ltd Organic waste water treatment method and organic waste water treatment equipment
USD665047S1 (en) * 2010-02-11 2012-08-07 Invent Umwelt-Und Verfahrenstechnik Ag Stirring body

Also Published As

Publication number Publication date
JP5307812B2 (en) 2013-10-02
BRPI0814951A2 (en) 2015-01-27
CN101778665A (en) 2010-07-14
ATE510613T1 (en) 2011-06-15
EP2175973A1 (en) 2010-04-21
IL203596A (en) 2013-01-31
EG25611A (en) 2012-03-20
CN101778665B (en) 2013-01-16
ZA201000605B (en) 2010-09-29
PL2175973T3 (en) 2011-10-31
BRPI0814951B1 (en) 2018-11-06
WO2009018915A1 (en) 2009-02-12
EP2175973B1 (en) 2011-05-25
US20100196165A1 (en) 2010-08-05
JP2010535610A (en) 2010-11-25
ES2366873T3 (en) 2011-10-26

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