WO2010086423A1 - Aérateur - Google Patents

Aérateur Download PDF

Info

Publication number
WO2010086423A1
WO2010086423A1 PCT/EP2010/051123 EP2010051123W WO2010086423A1 WO 2010086423 A1 WO2010086423 A1 WO 2010086423A1 EP 2010051123 W EP2010051123 W EP 2010051123W WO 2010086423 A1 WO2010086423 A1 WO 2010086423A1
Authority
WO
WIPO (PCT)
Prior art keywords
frame
gas
ventilator
fumigation device
membrane
Prior art date
Application number
PCT/EP2010/051123
Other languages
German (de)
English (en)
Inventor
Reinhart von Nordenskjöld
Original Assignee
Nordenskjoeld Reinhart Von
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 Nordenskjoeld Reinhart Von filed Critical Nordenskjoeld Reinhart Von
Publication of WO2010086423A1 publication Critical patent/WO2010086423A1/fr

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
    • C02F3/20—Activated sludge processes using diffusers
    • C02F3/201—Perforated, resilient plastic diffusers, e.g. membranes, sheets, foils, tubes, hoses
    • 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
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2311—Mounting the bubbling devices or the diffusers
    • 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
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2311—Mounting the bubbling devices or the diffusers
    • B01F23/23113—Mounting the bubbling devices or the diffusers characterised by the disposition of the bubbling elements in particular configurations, patterns or arrays
    • 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
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2311—Mounting the bubbling devices or the diffusers
    • B01F23/23114—Mounting the bubbling devices or the diffusers characterised by the way in which the different elements of the bubbling installation are mounted
    • B01F23/231142—Mounting the gas transporting elements, i.e. connections between conduits
    • 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
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23124—Diffusers consisting of flexible porous or perforated material, e.g. fabric
    • 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
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23126—Diffusers characterised by the shape of the diffuser element
    • B01F23/231265—Diffusers characterised by the shape of the diffuser element being tubes, tubular elements, cylindrical elements or set of 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
    • C02F3/20—Activated sludge processes using diffusers
    • C02F3/208—Membrane aeration
    • 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 gassing device for introducing gas into liquids, in particular compressed air in wastewater.
  • Fluid to be introduced gas is introduced into the aerator between the support body and the membrane and the gas then exits the perforated membrane in the fluid.
  • the support body serves in addition to holding the membrane at the same time to weight the aerator, so that the aerator advantageously decreases in the bottom region of the wastewater basin, so that the escaping gas has a long residence time in the wastewater. Since the membrane at
  • Weight of the aerator should therefore not be too large, as in assembly and repairs - which usually happens during operation, or full basin - large weights are very cumbersome.
  • the core idea of the invention is to keep the ventilator unit of an enclosing frame, with which the ventilator unit is protected from damage and largely prevented from clogging by settling of particles or by contacting the floor.
  • By means of the frame is further ensured that a lateral abutment of separate ventilation units is prevented.
  • the membranes are sometimes only 0.1 mm thick, they are mechanically very sensitive, so that a collision between two aerators often leads to the destruction of the membranes.
  • the at least one ventilator unit is connected to the frame, which for this purpose has a hollow connection space for passing the gas to be supplied through the frame into the ventilator unit.
  • the frame may comprise a plurality of ventilator units connected by the hollow connection space of the frame. The distance of
  • Construction allows the use of a small number of type parts.
  • the arrangement of the aerator units in the frame also leads to the generation of a possible laminar inflow from the ground, the rising from bottom to top laminar flow also above the
  • Belchieerussien is maintained. This, in turn, prevents small bubbles from merging into larger ones, which would be disadvantageously promoted in turbulent flows.
  • the upward rising laminar flow also causes an advantageous water supply to the aerators, with which a sludge lift from the ground is supported.
  • the frame advantageously has a hollow profile with a single connection space for a plurality of ventilator units to be arranged parallel to one another on the frame.
  • connection points on the hollow profile the distance between two ventilation units to each other by omitting an intermediate enlarged optional Belrangeerü be increased.
  • the intermediate "free" connection point for the optional ventilator unit is then blocked, for example by means of a screw cap or sealing plug.
  • side cheeks are provided in an advantageous manner, which then form the enclosing frame with the opposite hollow profiles. It is advantageous to provide a detachable connection between each one hand, the hollow section and on the other hand, the side cheek, so that the
  • Frame can be easily assembled and disassembled.
  • a plug-in screw connection is realized here, by means of which the side cheek is attached at its end to the end of the hollow profile and then fixed for example by means of a cap nut on the plug-in bolt.
  • the bolt may be welded to the hollow profile.
  • Such a plug-in screw connection has the advantage that cheeks on both sides can be replaced in a simple manner, according to a advantageous embodiment, different, massive side walls with different weights or even a plurality of thin side walls can be fixed to the hollow sections, so that the buoyancy of the gassing can be adjusted by the choice of a suitably heavy side cheek or the number of side cheeks.
  • Words is provided in an advantageous manner to provide different heavy side walls for replacement or more equal side walls for joining together in order to regulate the depth of the ventilator unit in response to a different injection quantity and a different buoyancy of the ventilator unit. Thinner side cheeks can be profiled to improve their stiffness.
  • the side cheeks are dimensioned such that even when the frame of the gassing device is placed on the ground, it is clamped in the frame
  • Aerator units do not touch the ground.
  • the side cheeks then form the feet of the gassing device and keep the ventilator units at a suitable distance from the ground.
  • Embodiment characterized in that means are provided, with which the frame pivots about an axis lying in the plane of the frame. is held in cash. Since the gas to be introduced always exits at the top of the ventilator unit, the outlet area on the ventilator unit can be changed by pivoting the frame. If the frame is therefore pivoted through 180 °, the former underside of the fan unit now forms the new upper side, where the gas escapes.
  • means are provided, with which the frame pivots about an axis lying in the plane of the frame. is held in cash. Since the gas to be introduced always exits at the top of the ventilator unit, the outlet area on the ventilator unit can be changed by pivoting the frame. If the frame is therefore pivoted through 180 °, the former underside of the fan unit now forms the new upper side, where the gas escapes.
  • Changing the ventilation side by pivoting the frame can be provided manually or by means of drive.
  • the pivoting can also be automated, such that pivoting of the frame is carried out by means of the drive after the expiration of fixed time periods.
  • a self-enforcing automatic change of position of the frame by controlling the injection is possible, so that in this case can be dispensed with a special drive.
  • To rotate the aerator is raised because he would otherwise not have enough space for the rotational movement.
  • the aerators that are just "up" are heavily pressurized with air, which leads to self-cleaning.
  • a ventilator unit comprises a support body with a membrane spanning this, wherein the gas supply takes place between the support body and the membrane.
  • the support body is connected to the hollow section of the aerator frame and it has a leading away from the terminal compartment a
  • the supporting body of the membrane is a tubular body having on its surface a notch, along which the gas introduced at the tubular body can flow from the beginning of the tubular body to its end.
  • the membrane spanning the tube body is inflated by the incoming gas only when the gas has reached the end of the tubular body and subsequently increases the gas pressure in the notch.
  • the membrane located above the notch has no perforation at this point for a gas outlet.
  • the non-return flap effect is achieved by omitting the perforation above the air inlet to the membrane space.
  • FIG. 1 shows the gassing device according to the invention in a plan view with a partially sectioned cross section
  • FIG. 3 shows a hollow profile in partial section
  • FIG. 4 shows an embodiment with a pivotable frame
  • Fig. 1 shows the gasification device according to the invention in a plan view with a total of four parallel arranged Bel distinctionerritten 10.
  • the left side shown in the figure two Belclasserritten 10 are supplied by an upper hollow section 16 with gas, whereas the two right-side Belclasserritten 10 through the lower hollow section 16 with Gas to be supplied.
  • support bodies 14 are provided at the respective connection points of the ventilation units (see detail Fig. 2), with which the gas from the hollow section 16 is continued by a line of the support body between the support body and membrane.
  • the hollow sections 16 form with the side cheeks 20 arranged on both sides of the profiles a frame 12 enclosing the ventilator units 10.
  • the side cheeks are fixed with a plug-in screw connection, wherein at the respective ends of the hollow profile 16 an outwardly projecting
  • Bolt is provided, on which the side cheeks 20 are each plugged and subsequently fixed with a cap nut by screwing.
  • the side cheeks are solid and are advantageously made of metal.
  • the weight of the gassing device can be chosen so that the buoyancy of the gassing device is suitably compensated or regulated.
  • a replacement of the side wall is well possible by the quick plug-in screw connection.
  • the frame enclosing the ventilator unit (s) provides optimum protection against collision with the venting unit (s) of an adjacent fumigation apparatus. A coincidence of two gassing devices can happen in that the gassing devices are set in migratory motion by the gas exiting the aerator units.
  • FIG. 2 shows the detail of a supporting body 14 for the gas connection point of a hollow profile 16 (not shown in FIG. 2).
  • the support body 14 is connected on the right side to the connection space 18 on a hollow profile, so that the gas is guided through the pipeline from the connection space 18 to the cylindrical outer circumference of the support body 14.
  • the membrane (not shown here) is held on its outer circumference, so that the gas emerging on the outer circumference of the support body 14 flows in between the support body and the membrane and exits through the membrane in a uniform manner.
  • a single ventilator unit normally has a single connecting device for supplying gas, so that a connecting space to the respective hollow profile per ventilator unit is also provided
  • the upper hollow section 16 has two left-sided connection points for two ventilation units and also the hollow connection space for the ventilation units is present only on the left side, whereas the right-side ventilation units are merely inserted in the upper hollow profile and no sealing device for preventing gas leakage must be provided here.
  • Fig. 3 shows the hollow profile 16 according to the invention with right-side sectional view.
  • the gas supply hose (not shown) is fixed to the hose nozzle projecting upwards, so that the gassing device suspended in the waste water can be supplied with gas.
  • two connection spaces 18 for connecting two ventilator units 10 are shown.
  • the plug-in bolts for fixing the side cheeks are clearly shown.
  • the ventilator units themselves do not touch the ground.
  • this may also include more or less ventilator units. If several ventilation units are provided, the length of a hollow profile should be dimensioned accordingly with provision of further connection spaces.
  • Fig. 4 shows an embodiment of the invention with pivotable
  • the hose nozzles of the hollow profile are arranged laterally directed outward and provided with a hinge. It should be noted that an air supply must not take place in both hollow sections. If the air is applied to only one side of a single hollow profile, only a rotary joint is provided on the unbound side.

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)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invention concerne un dispositif d'apport de gaz permettant d'introduire du gaz dans des liquides, en particulier de l'air comprimé dans des eaux usées, lequel dispositif comprend au moins un ensemble aérateur (10) étendu en longueur, qui présente une face au niveau de laquelle le gaz peut être introduit et un pourtour extérieur au niveau duquel le gaz peut s'échapper dans le liquide. L'invention est caractérisée en ce que l'ensemble aérateur (10) est maintenu par un châssis d'encadrement (12) qui comporte, à l'endroit d'un point de raccordement de l'ensemble aérateur sur le châssis, un espace de raccordement creux (18) permettant le passage du gaz à apporter à travers le châssis dans l'ensemble aérateur.
PCT/EP2010/051123 2009-01-29 2010-01-29 Aérateur WO2010086423A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009006576.8 2009-01-29
DE200910006576 DE102009006576A1 (de) 2009-01-29 2009-01-29 Belüfter

Publications (1)

Publication Number Publication Date
WO2010086423A1 true WO2010086423A1 (fr) 2010-08-05

Family

ID=42260360

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/051123 WO2010086423A1 (fr) 2009-01-29 2010-01-29 Aérateur

Country Status (2)

Country Link
DE (1) DE102009006576A1 (fr)
WO (1) WO2010086423A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010035751B4 (de) * 2010-08-28 2014-12-18 Wte Wassertechnik Gmbh Verfahren zur Reduzierung von Schwimmschlamm in einer Kläranlage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911068A (en) * 1973-07-02 1975-10-07 Jock Hamilton Pool chlorination diffuser
DE4221357A1 (de) * 1992-06-29 1994-01-05 Arnold Jaeger Wasserbelüftungseinrichtung
WO1997034839A1 (fr) * 1996-03-18 1997-09-25 Ludwig Scheibinger Dispositif d'aeration pour un bassin rempli de liquide
DE19934890A1 (de) * 1999-07-24 2001-01-25 Arnold Jaeger Vorrichtung zum feinblasigen Belüften von Wasser
US20070126135A1 (en) * 2005-10-26 2007-06-07 Parkson Corporation Flexible aeration panel and methods of use

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1112949B (de) * 1958-01-23 1961-08-17 Hellmut Geiger Dr Ing Vorrichtung zum Belueften von Abwasser, insbesondere fuer Belebtschlammanlagen
CH374600A (de) * 1959-08-18 1964-01-15 Von Roll Ag Belüftungseinrichtung zur Abwasserreinigung nach dem Belebtschlammverfahren
GB928628A (en) * 1961-10-12 1963-06-12 L Von Roll Ag Improvements in or relating to aerators for purification plants
DE2013798C3 (de) * 1969-06-07 1973-10-04 Heinrich Koppers Gmbh, 4300 Essen Vorrichtung zum Belüften einer Flüssigkeit
DE8017779U1 (de) * 1980-07-02 1980-11-13 Killing, Guenter-F., 6365 Rosbach Begasungs- oder belueftungsrohr zum eintrag von gasfoermigen medien in fluessigkeiten, insbesondere zur verwendung in klaeranlagen zur reinigung von abwaessern
DE3317917A1 (de) * 1983-05-17 1984-11-22 Reinhart von Dr.-Ing. 8011 Solalinden Nordenskjöld Belueftungskoerper fuer abwasserreinigungsanlagen
DE3619954A1 (de) * 1986-06-13 1987-12-17 Nordenskjoeld Reinhard Von Dr Verfahren zur biologischen reinigung von abwaessern und vorrichtung zur durchfuehrung eines solchen verfahrens
DE3810790C2 (de) * 1988-03-30 1999-09-16 Jaeger Arnold Vorrichtung zum Belüften von Wasser
CH680195A5 (fr) * 1988-11-24 1992-07-15 Roger Fux
DE4016451A1 (de) * 1990-05-22 1991-11-28 Steinmann & Ittig Gmbh & Co Kg Vorrichtung zur zufuehrung von luft zu einem luftverteiler eines klaerbeckens
DE4240300A1 (de) * 1992-12-01 1994-06-09 Rudolf Dipl Ing Poersch Belüfter zur Begasung von Flüssigkeiten in großen Behältern oder Becken
US5374353A (en) * 1993-01-21 1994-12-20 Murphy; D. Thomas Aeration train and aeration apparatus for biological purification of wastewater
DE4337091A1 (de) * 1993-10-29 1995-05-04 Keramische Fabrik Bidtelia Mei Verfahren zum Betreiben eines Wasserbelüftungssystems sowie Vorrichtung, insbesondere zur Durchführung des Verfahrens
US6550747B2 (en) * 1998-10-09 2003-04-22 Zenon Environmental Inc. Cyclic aeration system for submerged membrane modules
DE19912560A1 (de) * 1999-03-19 2000-09-21 Andreas Jaeger Vorrichtung zum Belüften von Wasser
DE10238624A1 (de) * 2002-08-19 2004-03-11 Gummi-Jäger GmbH Verfahren und Vorrichtung zum Belüften von Wasser

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911068A (en) * 1973-07-02 1975-10-07 Jock Hamilton Pool chlorination diffuser
DE4221357A1 (de) * 1992-06-29 1994-01-05 Arnold Jaeger Wasserbelüftungseinrichtung
WO1997034839A1 (fr) * 1996-03-18 1997-09-25 Ludwig Scheibinger Dispositif d'aeration pour un bassin rempli de liquide
DE19934890A1 (de) * 1999-07-24 2001-01-25 Arnold Jaeger Vorrichtung zum feinblasigen Belüften von Wasser
US20070126135A1 (en) * 2005-10-26 2007-06-07 Parkson Corporation Flexible aeration panel and methods of use

Also Published As

Publication number Publication date
DE102009006576A1 (de) 2010-08-05

Similar Documents

Publication Publication Date Title
DE2213658C3 (de) Wasserentkeimungsanlage
DE19580644B4 (de) Einrichtung zum feinblasigen Eintrag von Gasen in Flüssigkeit
DE202007001107U1 (de) Wasserverteiler für den parallelen Anschluss mehrerer Wasserbehandlungsgeräte
WO2010086423A1 (fr) Aérateur
EP2847136B1 (fr) Système de fixation d'un aérateur à bande
DE102013214639B4 (de) Quetschventil
DE10208927A1 (de) Desinfektionsvorrichtung für eine mobile Desinfektionsanlage zum Desinfizieren von Landfahrzeugen
DE19818094C2 (de) Membrantrenneinrichtung zum Filtern und Trennen von Strömungsmedien mit wenigstens einem Permeatauslaß
EP0588842A1 (fr) Reacteur a lit fixe pour le traitement biologique des eaux usees
EP2374527A2 (fr) Dispositif de gazage pour l'introduction intermittente d'un gaz dans un liquide
DE4447339C1 (de) Belüftungseinrichtung
EP2065082A1 (fr) Dispositif de purification de l'air
EP2816231B1 (fr) Appareil de rinçage et/ou de contrôle de la pression et de l'étanchéité de conduites, notamment de systèmes d'eau potable et/ou de chauffage
DE102013216040B4 (de) Belüftungsvorrichtung
DE19815460C2 (de) Belüftungssystem mit wenigstens einem perforierten Schlauch, insbesondere einem Membranschlauch
EP0806400A1 (fr) Aérateur courbé
EP3843887B1 (fr) Dispositif d'injection de gaz dans des liquides avec au moins un système d'injection de gaz linéaire
EP1369386A2 (fr) Dispositif d'aération d'eaux usées et de nettoyage d'une installation à membranes et microstation d'épuration d'eau contenant ce dispositif
WO1998019780A1 (fr) Systeme de fixation d'un dispositif de gazage
EP0803475B1 (fr) Aérateur
DE10336212A1 (de) Gerät zur Filterung von Wasser
DE102006008833B3 (de) Wasserleitsystem
DE102010018362B4 (de) Filtereinheit und damit ausgerüsteter Filter
DE2345405C3 (de) Vorrichtung zum Eintragen von sauerstoffhaltigen Gasen in Abwässer
DE29807330U1 (de) Vorrichtung zum Filtern und Trennen von Strömungsmedien mit wenigstens einem Permeatauslaß

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10710250

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10710250

Country of ref document: EP

Kind code of ref document: A1