WO2014125079A1 - Dispositif et procédé de traitement d'eaux usées - Google Patents

Dispositif et procédé de traitement d'eaux usées Download PDF

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Publication number
WO2014125079A1
WO2014125079A1 PCT/EP2014/052937 EP2014052937W WO2014125079A1 WO 2014125079 A1 WO2014125079 A1 WO 2014125079A1 EP 2014052937 W EP2014052937 W EP 2014052937W WO 2014125079 A1 WO2014125079 A1 WO 2014125079A1
Authority
WO
WIPO (PCT)
Prior art keywords
waste water
tube
stirring
stirring device
axis
Prior art date
Application number
PCT/EP2014/052937
Other languages
German (de)
English (en)
Inventor
Leonhard Fuchs
Martin Fuchs
Original Assignee
Leonhard Fuchs
Martin Fuchs
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 Leonhard Fuchs, Martin Fuchs filed Critical Leonhard Fuchs
Publication of WO2014125079A1 publication Critical patent/WO2014125079A1/fr

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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
    • C02F3/20—Activated sludge processes using diffusers
    • C02F3/205—Moving, e.g. rotary, diffusers; Stationary diffusers with moving, e.g. rotary, distributors
    • C02F3/207—Moving, e.g. rotary, diffusers; Stationary diffusers with moving, e.g. rotary, distributors with axial thrust propellers
    • 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
    • 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
    • B01F23/2335—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the direction of introduction of the gas relative to the stirrer
    • B01F23/23354—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the direction of introduction of the gas relative to the stirrer the gas being driven away from the rotating stirrer
    • 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
    • B01F23/2336—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer
    • B01F23/23366—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer the gas being introduced in front of the stirrer
    • 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
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0725—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis on the free end of the rotating axis
    • 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
    • B01F27/113—Propeller-shaped stirrers for producing an axial flow, e.g. shaped like a ship or aircraft propeller
    • 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
    • B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
    • B01F27/1143—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections screw-shaped, e.g. worms
    • 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
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/61—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis about an inclined axis
    • 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

Definitions

  • the invention relates to a wastewater treatment apparatus and a method for wastewater treatment.
  • Wastewater treatment devices are usually used for aerating or mixing wastewater, wherein air or gases are introduced into the wastewater or already in the wastewater introduced substances, such as the wastewater itself, are mixed.
  • the aim of a wastewater treatment device is usually a fast and efficient cleaning of a wastewater or a reduction of substances contained in the wastewater.
  • a screw fan for waste gas fumigation is known.
  • This has a rotationally driven shaft on which a mixing or stirring element is arranged.
  • the shaft protrudes obliquely into the wastewater to be fumigated.
  • the shaft is designed as a hollow shaft and has an integrated air duct.
  • At the mixing element several air outlets are arranged. In operation, compressed air is supplied to the air duct via a blower.
  • the previously known screw fan allows an advantageous depth effect of the ventilation.
  • the known screw ventilator makes use of the suction effect produced by the rotating mixing element in order to suck air from the air duct into the water.
  • the volume of air which can be introduced into the wastewater by means of the known screw ventilator is limited and the use of the screw ventilator is largely restricted to gaseous injection media.
  • the invention is defined by the features of claim 1 and of claim 12.
  • a waste water treatment device for aerating or mixing wastewater with an axially conveying stirring device with at least one free-running stirrer having a diameter D, wherein the stirring device is submerged in the waste water, and wherein an axis of the stirring device is arranged at an acute angle a to the horizontal
  • a fluid can be introduced into a waste stream generated by the stirring device in the axial direction of the stirring device, wherein the pipeline system has at least one pipe with a diameter d, the tube axis in the outlet at an acute angle [3 to the axis of Stirring device runs.
  • the wastewater treatment device thus provides a separate from the stirring device piping system for introducing the fluid.
  • the piping system for introducing a fluid into the waste water flow generated by the stirring device is not bound to the design specifications of the stirring device, so that the piping system can be adapted to the fluid to be introduced.
  • a Foam can be introduced into the wastewater stream.
  • the foam may, for example, be the foam often forming on the surface of waste water.
  • the fluid to be introduced can advantageously be introduced into the wastewater stream produced by the stirring device, so that a thorough mixing is effected.
  • a wastewater flow is generated, which extends in an advantageous manner in the direction g r Thompsonerer depths of the waste water, so that the introduced into the wastewater flow fluid ebenfal ls reaches greater depths.
  • the angle a which is net angeord between the axis of the stirring device and the horizontal, between 30 ° and 60 °, preferably 45 °.
  • the angle [3, which is net angeord between the tube axis in the outlet region of the tube and the axis of the stirring device between 30 ° and 60 °, preferably 45 °.
  • This relatively steep Anord tion of the stirring device has the consequence that the waste stream of the stirring device extends particularly deep into the wastewater.
  • the stirring device may, for example, have a motor arranged above the waste water jet, this oil having a relatively small horizontal extent at a stirring device arranged at such an angle.
  • Dad urch the above the Abiganspiegeis necessary structure for a Abigan analog invention device are formed with a relatively small horizontal length.
  • the arrangement of the pipe at the indicated angle [3 has the advantage that the fluid flowing out of the outlet region of the pipe has a velocity component q to the wastewater flow direction and a velocity component in the direction of the wastewater stream, so that In addition to an advantageous mixing and a Mitströmen the fluid is improved in the direction of the waste stream.
  • the tube axis of the tube is arranged at an angle ⁇ to the horizontal, wherein: 60 ° ⁇ ⁇ 120 ° or ⁇ ⁇ 30 °.
  • the outlet area of the pipe runs vertically or in an angular range ⁇ 30 ° to the vertical or horizontally or in an angular range ⁇ 30 ° to the horizontal.
  • the substantially vertical arrangement is provided in a structurally particularly simple manner.
  • the substantially horizontal arrangement, in which the tube is arranged below the stirring device, is particularly advantageous when using air or a gas, since in this case the buoyancy of the fluid can be used, so that the fluid advantageously in the waste water stream distributed.
  • a ratio has have proven to be particularly advantageous, with an advantageous mixing is achieved in that the diameter of the introduced fluid flow is at most half the diameter of the waste stream generated by the stirring device.
  • the diameter D of the stirring element is understood to be the maximum extent of the stirring element in a direction orthogonal to the axis of the stirring device.
  • the stirring element can be designed as a propeller or screw.
  • the stirring device comprises a combination of a plurality of stirring members, wherein the stirring members may also be of different types.
  • the outlet region of the tube is arranged in the axial direction of the stirring device within the projection surface of the stirring element. In other words, the outlet region of the tube is located in a space that results in the axial direction through the projection of the stirring element.
  • the outlet region is arranged within the projection surface of the smallest stirring element.
  • the piping system may, for example, have a shut-off device.
  • the waste water treatment device can be operated without the introduction of a fluid.
  • a throttle is arranged in the pipeline system. The throttle can influence the flow behavior of the fluid when it is introduced into the wastewater stream, whereby an optimal adjustment of the wastewater treatment device is possible.
  • the center of the tube outlet is arranged in the direction orthogonal to the tube axis at a distance h to the axis of the stirring device, wherein: 0.3 ⁇ D ⁇ h ⁇ 1.5 ⁇ D.
  • Such Distance has proven to be particularly advantageous, so that when introducing the fluid into the wastewater stream, the fluid can be distributed in an advantageous manner. In particular, the distance allows the wastewater stream not to affect the pressure conditions at the tube outlet too much.
  • the point of intersection of the tube axis of the outlet region of the tube with the axis of the stirring device in a Distance L is arranged from the center of the stirring element, wherein: 0.5 ⁇ D ⁇ L ⁇ 2 ⁇ D.
  • the piping system may be connected to a suction device for suction of sewage foam or to a forced aerator, such as a fan, blower or compressor.
  • a forced aerator such as a fan, blower or compressor.
  • the tube outlet surface may be orthogonal or inclined to the tube axis.
  • the piping system may have tubes with a round, a square or a rectangular cross-section.
  • the waste water treatment device can usually be used such that the center of the stirring element is at a depth H of 0.6-1.2 m, preferably 0.8 m.
  • This has the advantage that the stirrer is already arranged in a relatively large depth, so that the waste water flow gets particularly deep into the wastewater.
  • the introduced into the wastewater fluid or air is a gas, thus a particularly large amount of wastewater can be vented or penetrated by the gas, since this travels a long distance through the water when ascending through the water.
  • the depth H is between three times and six times the diameter D of the stirring member.
  • the depth H is four times the diameter of the stirrer. Such a ratio has proven to be particularly advantageous.
  • the wastewater treatment device according to the invention can be installed in a conventional manner in a wastewater tank, ie z. B. at the edge of the pool, on a bridge or on a float.
  • a conventional stirring device with a stirrer driving the hollow shaft and a housing surrounding the hollow shaft is used, in the additional air or gas is passed through the hollow shaft, and exiting the impeller in the wastewater.
  • center of the stirring element is understood to mean the point on the axis of the stirring device which is located in the middle of the axial extent of the stirring element.
  • the angles are each the smallest angle between the respective objects, ie. in the arrangement, the angle can be given in the mathematically positive or negative sense.
  • a wastewater stream is produced in the wastewater at an acute angle a to the horizontal, and that a fluid is introduced into the wastewater stream at an acute angle [3.
  • a method which can be carried out in particular with the waste water treatment device according to the invention, has the advantage that by generating a waste water stream at an acute angle to the horizontal, the wastewater jet can extend deep into the wastewater.
  • the fluid, which is introduced at an acute angle into the wastewater stream can thus be transported far into the sewage stream and deep into the sewage, wherein, moreover, an advantageous mixing takes place.
  • the fluid, when introduced has velocity components in the direction of the sewage stream and orthogonal to the direction of the sewage stream. This is done both a advantageous mixing as well as an advantageous transport of the fluid into the depths of the wastewater.
  • the fluid is foam, air and / or gas.
  • foam for example, the often on a wastewater surface forming foam can be used. This has the advantage that it is returned to the wastewater to reduce other pollutants.
  • Fig. 1 is a schematic representation of a first embodiment according to a waste water treatment apparatus according to the invention.
  • Fig. 2 is a schematic representation of a second embodiment of a waste water treatment device according to the invention.
  • a wastewater treatment device 1 for aerating or mixing wastewater 100 is shown schematically.
  • the wastewater treatment device 1 has an axially conveying stirring device 3, on which at least one free-running stirring element 5 is arranged.
  • the stirring element 5 has a diameter D.
  • the stirring element 5 may be, for example, a propeller or a screw.
  • the stirring device 3 has a combination of several stirring elements 5.
  • the stirring device 3 is immersed in the wastewater 100, wherein the axis 3a of the stirring device 3 at an acute angle a to the horizontal 110th is arranged.
  • the length of the stirring device 3 is chosen such that the center 7 of the stirring element 5 is at a depth H to the water level 120.
  • the stirrer 5 is arranged at a depth H between 0.6 and 1.2 m. In particular, it can be provided that the depth H is approximately three to six times the diameter D of the stirring element 5.
  • the wastewater treatment device 1 further comprises a pipeline system 9, which comprises at least one tube 11.
  • the tube 11 has a diameter d and is arranged such that the tube axis I Ia in the outlet region 13 of the tube at an acute angle [3 to the axis 3a of the stirring device 3 extends. A fluid can thus be introduced into the wastewater stream generated by the stirring device 3 via the pipeline system 9.
  • the tube axis I Ia of the tube 11 extends at an angle ⁇ to the horizontal.
  • the tube is parallel to the horizontal, so that the angle ⁇ is not shown.
  • the tube 11 is vertical, so that the angle ⁇ is 90 ° to the horizontal.
  • the angles a and [3 amount to 45 ° in the exemplary embodiments shown.
  • the outlet region 13 of the tube 11 is located in the axial direction of the stirring device 3 within the projection surface 5a of the agitation system 5. This ensures that the fluid emerging from the tube 11 is introduced into the wastewater stream produced by the agitation system 5.
  • the diameter d of the tube is preferably between 10% and 50% of the diameter D of the stirring member 5.
  • the outlet portion 13 of the tube 11 has a tube outlet surface 15b which, in the case shown in FIG. 1 embodiment shown orthogonal to the tube axis I Ia runs. In the in Fig. 2 illustrated embodiment, the tube outlet surface 15b extends inclined to the axis I Ia.
  • the center 15a of the tube outlet 15 is arranged in the orthogonal direction to the tube axis I Ia of the tube 11 at a distance h from the axis 3a of the stirring device 3.
  • the distance h is preferably 30% to 150% of the diameter D of the stirring member. 5
  • the point of intersection 17 of the tube axis I Ia with the axis 3a of the stirring device 3 is at a distance L from the center 7 of the stirring member 5.
  • the distance L is between 50% and 200% of the diameter D of the stirring element.
  • the stirring device 3 can be arranged in a conventional manner on a float floating on the water level 120.
  • the stirring device 3 can be used in sewage tanks of sewage treatment plants.
  • the stirring device 3 may be driven by a conventional driving device such as an electric motor.
  • the piping system 9 may be connected to a suction device, not shown, for sucking waste foam or with a forced aerator, for example with a fan, a blower or a compressor. In this way, either the foam formed on the wastewater or pressurized air or pressurized gas can be introduced into the wastewater stream. Furthermore, it can be provided that a shut-off element or a throttle is arranged in the pipeline system. To this The flow of fluid to be introduced into the wastewater stream can be advantageously controlled in an advantageous manner.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Hydrology & Water Resources (AREA)
  • Microbiology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Physical Water Treatments (AREA)

Abstract

L'invention concerne un dispositif (1) de traitement d'eaux usées destiné à aérer ou mélanger des eaux usées (100) à l'aide d'un système agitateur à poussée axiale (3) comprenant au moins un organe agitateur à roue libre (5) de diamètre D, le système agitateur (3) pouvant être immergé dans les eaux usées (100) et un axe (3a) du système agitateur faisant un angle aigu α par rapport à l'horizontale (110). Selon l'invention, un fluide peut être introduit par l'intermédiaire d'un système de canalisations (9) dans un courant d'eaux usées généré par le système agitateur (3) dans la direction axiale du système agitateur (3), le système de canalisations (9) comprenant au moins un tuyau (11) de diamètre d dont l'axe (11a) s'étend dans la zone de sortie (13) en faisant un angle aigu β par rapport à l'axe (3a) du système agitateur (3).
PCT/EP2014/052937 2013-02-15 2014-02-14 Dispositif et procédé de traitement d'eaux usées WO2014125079A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310202492 DE102013202492A1 (de) 2013-02-15 2013-02-15 Abwasserbehandlungsvorrichtung und Verfahren zur Abwasserbehandlung
DE102013202492.4 2013-02-15

Publications (1)

Publication Number Publication Date
WO2014125079A1 true WO2014125079A1 (fr) 2014-08-21

Family

ID=50189663

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/052937 WO2014125079A1 (fr) 2013-02-15 2014-02-14 Dispositif et procédé de traitement d'eaux usées

Country Status (2)

Country Link
DE (1) DE102013202492A1 (fr)
WO (1) WO2014125079A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614072A (en) * 1969-01-02 1971-10-19 James H Brodie Hydraulic flow inducer
DE3144885A1 (de) * 1981-11-12 1983-05-19 Helga Lind Vorrichtung zur begasung oder belueftung und/oder umwaelzung von bzw. erzeugung von stroemungen in fluessigkeiten
GB2164576A (en) * 1984-09-17 1986-03-26 Ekato Ind Anlagen Verwalt Gas injection apparatus
DE3538715A1 (de) 1985-10-31 1987-05-07 Fuchs Leonhard Schraubenbeluefter fuer die abwasserbegasung
DE3613625A1 (de) * 1986-04-23 1987-10-29 Dieter Frankenberger Verfahren und vorrichtung zum belueften einer fluessigkeit, insbesondere von abwaessern
EP0293962A1 (fr) * 1987-05-26 1988-12-07 H.I.L.-Water Contractors B.V. Dispositif pourvu d'un réservoir contenant un liquide et un rotor monté à l'intérieur
US5196148A (en) * 1992-02-18 1993-03-23 Nigrelli Systems Inc. Aerator
US20070063359A1 (en) * 2005-09-16 2007-03-22 Dowd Robert P Aeration system and method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614072A (en) * 1969-01-02 1971-10-19 James H Brodie Hydraulic flow inducer
DE3144885A1 (de) * 1981-11-12 1983-05-19 Helga Lind Vorrichtung zur begasung oder belueftung und/oder umwaelzung von bzw. erzeugung von stroemungen in fluessigkeiten
GB2164576A (en) * 1984-09-17 1986-03-26 Ekato Ind Anlagen Verwalt Gas injection apparatus
DE3538715A1 (de) 1985-10-31 1987-05-07 Fuchs Leonhard Schraubenbeluefter fuer die abwasserbegasung
DE3613625A1 (de) * 1986-04-23 1987-10-29 Dieter Frankenberger Verfahren und vorrichtung zum belueften einer fluessigkeit, insbesondere von abwaessern
EP0293962A1 (fr) * 1987-05-26 1988-12-07 H.I.L.-Water Contractors B.V. Dispositif pourvu d'un réservoir contenant un liquide et un rotor monté à l'intérieur
US5196148A (en) * 1992-02-18 1993-03-23 Nigrelli Systems Inc. Aerator
US20070063359A1 (en) * 2005-09-16 2007-03-22 Dowd Robert P Aeration system and method

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