DE3829666A1 - Novel Menzel dome aerator having a rubber membrane - Google Patents
Novel Menzel dome aerator having a rubber membraneInfo
- Publication number
- DE3829666A1 DE3829666A1 DE19883829666 DE3829666A DE3829666A1 DE 3829666 A1 DE3829666 A1 DE 3829666A1 DE 19883829666 DE19883829666 DE 19883829666 DE 3829666 A DE3829666 A DE 3829666A DE 3829666 A1 DE3829666 A1 DE 3829666A1
- Authority
- DE
- Germany
- Prior art keywords
- membrane
- aerator
- air supply
- air
- closed
- 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.)
- Ceased
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
- B01F23/2312—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
- B01F23/231262—Diffusers characterised by the shape of the diffuser element having disc shape
-
- 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)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Für die Belüftung von Abwasser mit Luftsauerstoff ist der Einsatz von Dombelüftern seit Jahren bewährt. Durch die von der Verfahrenstechnik geforderte intermittierende Belüftung wird als Belüfterwerkstoff zunehmend elasti sches Material mit glatter Oberfläche z.B. Gummi oder Kunststoff eingesetzt. Hierdurch werden Ablagerungen und Verstopfungen vermieden bzw. beim Anfahren wieder abge worfen. Gleichzeitig muß beim Abstellen der Luftzufuhr ein Eindringen des Wassers in das Belüftungssystem verhindert werden. Eine weitere Forderung an den Belüfter sind ein möglichst geringer Widerstand zur Reduzierung des Energieverbrauches sowie ein gleichmäßiger Luftaus tritt über der Behälteroberfläche zur Vermeidung von Luftwalzen und Luftkanälen mit entsprechend verschlech teter Luft-Sauerstoffausnutzung. Diese Forderungen werden mit dem erfindungsgemäßen Belüfter in einfacher und wirtschaftlicher Form, was Herstellung und Betrieb des Belüfters betrifft, erreicht. Der Belüfter besteht im wesentlichen aus dem Trägerkörper (1), bevorzugt ausge führt als Ronde aus Kunststoff oder Edelstahl, die zentral über Anschlußstutzen (2) an die Luftzufuhr (3) angeschlossen wird. Die Membrane (4) mit Luftöffnungen (8), wird mit abgestimmter Vorspannung mittels Klemmvor richtung o. ä. (5) am Trägerkörper festgespannt. Die neuartige Ausführung des Rückschlagventiles besteht im wesentlichen aus einer ventilsitzartigen Ausbildung (6) des Luftzuführstutzens (2) oder des Trägerkörpers (1) in Verbindung mit einer geschlossenen Ausführung der Mem brane (4) oberhalb der Luftzufuhr. Damit senkt sich durch den Wasserdruck die Membrane (4) beim Abschalten der Luftzufuhr automatisch auf den Ventilsitz (6) und ein Wassereintritt in das Belüftungssystem (2)+(3) wird ausgeschlossen. Gleichzeitig verbessert die oberhalb der Luftzufuhr (2) dicht ausgeführte Belüftermembrane (7) wesentlich die Luftverteilung in Bezug auf Kanal und Walzenbildung.Dome aerators have been used for years to ventilate wastewater with atmospheric oxygen. Due to the intermittent ventilation required by process engineering, elastic material with a smooth surface, such as rubber or plastic, is increasingly being used as the aerator material. In this way, deposits and blockages are avoided or thrown off again when starting off. At the same time, water must be prevented from entering the ventilation system when the air supply is switched off. Another requirement for the aerator is the lowest possible resistance to reduce energy consumption and a uniform air outlet over the surface of the container to avoid air rollers and air ducts with correspondingly impaired air-oxygen utilization. These requirements are achieved with the aerator according to the invention in a simple and economical form, as far as the manufacture and operation of the aerator is concerned. The aerator consists essentially of the carrier body ( 1 ), preferably leads out as a round plate made of plastic or stainless steel, which is connected centrally via connection piece ( 2 ) to the air supply ( 3 ). The membrane ( 4 ) with air openings ( 8 ) is clamped to the carrier body with a coordinated preload by means of a clamping device or the like (5). The new design of the check valve consists essentially of a valve seat-like design ( 6 ) of the air supply nozzle ( 2 ) or the support body ( 1 ) in conjunction with a closed design of the membrane ( 4 ) above the air supply. As a result, the water pressure automatically lowers the diaphragm ( 4 ) to the valve seat ( 6 ) when the air supply is switched off and prevents water from entering the ventilation system ( 2 ) + ( 3 ). At the same time, the aerator membrane ( 7 ), which is tightly sealed above the air supply ( 2 ), significantly improves the air distribution in relation to the channel and the formation of rollers.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19883829666 DE3829666A1 (en) | 1988-09-01 | 1988-09-01 | Novel Menzel dome aerator having a rubber membrane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19883829666 DE3829666A1 (en) | 1988-09-01 | 1988-09-01 | Novel Menzel dome aerator having a rubber membrane |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3829666A1 true DE3829666A1 (en) | 1990-03-08 |
Family
ID=6362055
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19883829666 Ceased DE3829666A1 (en) | 1988-09-01 | 1988-09-01 | Novel Menzel dome aerator having a rubber membrane |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3829666A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0549518A1 (en) * | 1991-12-20 | 1993-06-30 | HUBER & SUHNER AG KABEL-, KAUTSCHUK-, KUNSTSTOFF-WERKE | Apparatus for introducing gas into a liquid |
DE19516395A1 (en) * | 1995-05-04 | 1996-11-07 | Werkstoff & Funktion Grimmel W | Waste water assembly aerators used alternately as air inlet and water filter outlets |
DE19722781A1 (en) * | 1997-05-30 | 1998-12-03 | Ott Rita | Gassing unit for liquids, especially for aerating waste water |
EP1041043A2 (en) * | 1999-03-25 | 2000-10-04 | Jäger, Arnold | Water aerator of the plate type |
CN100479906C (en) * | 2007-04-30 | 2009-04-22 | 华南理工大学 | Film-type boring aeration pipe |
EP2075053A1 (en) * | 2007-12-31 | 2009-07-01 | Environmental Dynamics, Inc. | Disk diffuser with improved seal, in particular for waste water treatment |
-
1988
- 1988-09-01 DE DE19883829666 patent/DE3829666A1/en not_active Ceased
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0549518A1 (en) * | 1991-12-20 | 1993-06-30 | HUBER & SUHNER AG KABEL-, KAUTSCHUK-, KUNSTSTOFF-WERKE | Apparatus for introducing gas into a liquid |
DE19516395A1 (en) * | 1995-05-04 | 1996-11-07 | Werkstoff & Funktion Grimmel W | Waste water assembly aerators used alternately as air inlet and water filter outlets |
DE19722781A1 (en) * | 1997-05-30 | 1998-12-03 | Ott Rita | Gassing unit for liquids, especially for aerating waste water |
EP1041043A2 (en) * | 1999-03-25 | 2000-10-04 | Jäger, Arnold | Water aerator of the plate type |
EP1041043A3 (en) * | 1999-03-25 | 2002-06-05 | Jäger, Arnold | Water aerator of the plate type |
CN100479906C (en) * | 2007-04-30 | 2009-04-22 | 华南理工大学 | Film-type boring aeration pipe |
EP2075053A1 (en) * | 2007-12-31 | 2009-07-01 | Environmental Dynamics, Inc. | Disk diffuser with improved seal, in particular for waste water treatment |
US8061689B2 (en) | 2007-12-31 | 2011-11-22 | Environmental Dynamics, Inc. | Disk diffuser with improved seal |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8131 | Rejection |