DE102008029273B4 - Device for gassing a liquid, in particular for aerating wastewater, and clarifiers - Google Patents
Device for gassing a liquid, in particular for aerating wastewater, and clarifiers Download PDFInfo
- Publication number
- DE102008029273B4 DE102008029273B4 DE200810029273 DE102008029273A DE102008029273B4 DE 102008029273 B4 DE102008029273 B4 DE 102008029273B4 DE 200810029273 DE200810029273 DE 200810029273 DE 102008029273 A DE102008029273 A DE 102008029273A DE 102008029273 B4 DE102008029273 B4 DE 102008029273B4
- Authority
- DE
- Germany
- Prior art keywords
- membrane
- contraption
- basin
- ground
- tanks
- 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.)
- Expired - Fee Related
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 title claims abstract description 5
- 239000012528 membrane Substances 0.000 claims abstract description 54
- 239000010865 sewage Substances 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 7
- 229920002943 EPDM rubber Polymers 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 5
- 239000004800 polyvinyl chloride Substances 0.000 claims description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims 2
- 239000003570 air Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000005276 aerator Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- B01F23/23123—Diffusers consisting of rigid porous or perforated material
-
- 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
- B01F23/23125—Diffusers characterised by the way in which they are assembled or mounted; Fabricating the parts of 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
- B01F23/2312—Diffusers
- B01F23/23126—Diffusers characterised by the shape of the diffuser element
- B01F23/231264—Diffusers characterised by the shape of the diffuser element being in the form of plates, flat beams, flat membranes or films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/10—Maintenance of mixers
- B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
-
- 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
Abstract
Vorrichtung (18) zum Begasen einer Flüssigkeit (16) in einem Becken (10) oder Tank, insbesondere zum Belüften von Abwasser (16) in einer Kläranlage, mit einer Membran (28, 30) mit einer Vielzahl von Mikroöffnungen, die im Betrieb die Oberseite eines mit einer Gasversorgung verbundenen Kanals (20) bildet, dadurch gekennzeichnet, dass die Vorrichtung (18) eine Befestigungseinrichtung (45) umfasst, mit der die Membran (28, 30) direkt ohne Zwischenschaltung von Rohren oder Trägerplatten am Boden (12) des Beckens (10) oder Tanks befestigt ist.Device (18) for gassing a liquid (16) in a basin (10) or tank, in particular for aerating wastewater (16) in a sewage treatment plant, with a membrane (28, 30) with a large number of micro-openings, which during operation the Forms the top of a channel (20) connected to a gas supply, characterized in that the device (18) comprises a fastening device (45) with which the membrane (28, 30) can be attached directly to the bottom (12) of the floor without the interposition of pipes or support plates Basin (10) or tanks is attached.
Description
Die Erfindung betrifft eine Vorrichtung zum Begasen einer Flüssigkeit, insbesondere zum Belüften von Abwasser, nach dem Oberbegriff des Anspruchs 1 sowie ein Klärbecken nach dem Oberbegriff des nebengeordneten Patentanspruchs.The invention relates to a device for gassing a liquid, in particular for aerating wastewater, according to the preamble of claim 1 and a clarifier according to the preamble of the independent claim.
Die
Die
Aufgabe der vorliegenden Erfindung ist es, die Kosten für Installation und Wartung einer solchen Vorrichtung zu reduzieren und darüber hinaus den Wirkungsgrad einer solchen Vorrichtung zu verbessern.The object of the present invention is to reduce the cost of installation and maintenance of such a device and also to improve the efficiency of such a device.
Diese Aufgabe wird durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 sowie durch ein Klärbecken mit den Merkmalen des nebengeordneten Patentanspruchs gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in Unteransprüchen angegeben. Darüber hinaus finden sich für die Erfindung wichtige Merkmale in der nachfolgenden Beschreibung und in der Zeichnung.This object is achieved by a device having the features of claim 1 and by a clarifier with the features of the independent claim. Advantageous developments of the invention are specified in subclaims. In addition, find important features for the invention in the following description and in the drawing.
Der Aufbau der erfindungsgemäßen Vorrichtung ist geradezu minimalistisch einfach: Im Grunde genügt eine mit Mikroöffnungen versehene Membran, die direkt, also ohne Zwischenschaltung irgendeines Rohres oder von Trägerplatten, auf dem Boden des Beckens befestigt wird. Im allereinfachsten Falle wird also die Unterseite des Kanals durch den Boden des Beckens gebildet, wohingegen die Oberseite des Kanals durch die Membran gebildet wird. Die Installation eines solchen Kanals erfordert nur einen sehr geringen Aufwand, die Wartung, beispielsweise ein Austausch, ist äußerst einfach durchzuführen, und die Herstellkosten sind sehr niedrig. Darüber hinaus ist die Höhe über dem Boden des Beckens, in der die Luftbläschen aus den Mikroöffnungen austreten, nur äußerst gering, so dass das in dem Becken vorhandene Fluid quasi vollständig von der austretenden Luft beaufschlagt wird. Dank der erfindungsgemäßen Vorrichtung wird daher ein großer Wirkungsgrad bei der Reinigung des in dem Becken vorhandenen Abwassers erzielt.The structure of the device according to the invention is downright minimalist simple: basically enough provided with a micro-openings membrane which is attached directly, so without the interposition of any pipe or support plates on the bottom of the basin. In the most simple case, therefore, the bottom of the channel is formed by the bottom of the basin, whereas the top of the channel is formed by the membrane. The installation of such a channel requires only a very small effort, maintenance, such as replacement, is extremely easy to perform, and the production costs are very low. In addition, the height above the bottom of the basin in which the air bubbles emerge from the micro-openings, only extremely low, so that the fluid present in the basin is almost completely acted upon by the exiting air. Thanks to the device according to the invention, therefore, a high efficiency in the purification of existing in the basin wastewater is achieved.
In einer ersten Weiterbildung wird für den stirnseitigen Abschluss ein Formteil vorgeschlagen, welches beispielsweise als Tiefziehteil oder Spritzgussteil in Form einer Halbschale hergestellt werden kann. Möglich ist auch eine Ausgestaltung des Formteils aus dem gleichen Material wie die Membran, jedoch mit abgerundeten Ecken, um die entstehenden Kräfte optimal aufnehmen zu können. Damit wird die Dichtigkeit am stirnseitigen Ende des Kanals erhöht, und die Lebensdauer wird verbessert, da Spannungsspitzen durch die vorzugsweise abgerundete Form des Formteils sowie Falten vermieden werden.In a first development, a molding is proposed for the frontal conclusion, which can be prepared for example as a deep-drawn part or injection molded part in the form of a half-shell. Also possible is an embodiment of the molding of the same material as the membrane, but with rounded corners in order to absorb the resulting forces optimally. Thus, the tightness at the front end of the channel is increased, and the life is improved because stress peaks are avoided by the preferably rounded shape of the molding and wrinkles.
Durch die gemäß einer anderen Weiterbildung vorgesehene Bördelung wird im Zusammenwirken mit der vorgeschlagenen Klemmschiene eine sichere Befestigung unmittelbar am Boden des Beckens ermöglicht, die darüber hinaus preiswert herstellbar und leicht realisierbar ist.By provided according to another embodiment flanging a secure attachment directly to the bottom of the pool is possible in cooperation with the proposed clamping rail, which is also inexpensive to produce and easy to implement.
Zur Einbringung des Gases in den Kanal eignet sich besonders gut ein Anschlussstutzen in Form eines Formteils, wiederum beispielsweise eines Spritzguss- oder Tiefzieh- oder Drehteiles. Hierdurch ist eine dichte und zuverlässige Anbindung des Kanals an die Gasversorgung möglich.For introducing the gas into the channel is particularly well a connection piece in the form of a molded part, in turn, for example, an injection or deep-drawn or rotary part. As a result, a dense and reliable connection of the channel to the gas supply is possible.
Ein breiter flacher Querschnitt des Kanals, beispielsweise mit einem Seitenverhältnis von mindestens 1 zu 10, reduziert das Volumen und die Höhe, in der die Mikroöffnungen angeordnet sind, verbessert also letztlich den Wirkungsgrad der Vorrichtung. Die lang gestreckte Form des Kanals reduziert die Anzahl der für die Belüftung des gesamten Beckens erforderlichen Kanäle und somit die gesamten Installationskosten.A broad, flat cross-section of the channel, for example with an aspect ratio of at least 1 to 10, reduces the volume and height at which the microapertures are located, thus ultimately improving the efficiency of the device. The elongated shape of the channel reduces the number of channels required to ventilate the entire pool and thus the total installation cost.
Die Anforderungen an den Boden des Beckens können durch eine auf dem Boden des Beckens aufliegende Folie reduziert werden, die mit der Membran fluiddicht zusammenwirkt.The requirements for the bottom of the pool can be reduced by a foil resting on the bottom of the pool which interacts fluid-tight with the membrane.
Ebenfalls zur Verbesserung des Wirkungsgrads dient eine Dichtung, die, je nach Art der Installation, zwischen Folie und Membran oder zwischen Membran und Boden angeordnet ist.Also to improve the efficiency is a seal that, depending on the nature of Installation, between foil and membrane or between the membrane and the bottom is arranged.
Um auch hohe Druckdifferenzen zu beiden Seiten der Membran zuverlässig und für eine lange Zeit aushalten zu können, kann eine Gewebearmierung vorgesehen sein, durch die die Zugfestigkeit der Membran verbessert wird. Dem steht nicht entgegen, dass die Membran vorzugsweise gummielastische Eigenschaften aufweist, da dies zumindest in bestimmten Richtungen beispielsweise durch eine entsprechende Orientierung der Gewebearmierung erreichbar ist. Denkbar ist auch, die Armierung so auszugestalten, dass zunächst eine gummielastische Ausdehnung der Membran möglich ist, die dann durch ein Wirksamwerden der Gewebearmierung gestoppt wird.In order to be able to reliably withstand high pressure differences on both sides of the membrane for a long time, a fabric reinforcement can be provided, by means of which the tensile strength of the membrane is improved. This does not preclude that the membrane preferably has rubber-elastic properties, since this can be achieved at least in certain directions, for example by a corresponding orientation of the fabric reinforcement. It is also conceivable to design the reinforcement in such a way that initially a rubber-elastic expansion of the membrane is possible, which is then stopped by the tissue reinforcement becoming effective.
Als Material eignen sich für die Membran insbesondere PVC (Polyvinylchlorid) sowie gummielastische Materialien, beispielsweise EPDM (Ethylen-Propylen-Dien-Kautschuk), Silikon und/oder Polyurethan.Suitable materials for the membrane are in particular PVC (polyvinyl chloride) and rubber-elastic materials, for example EPDM (ethylene-propylene-diene rubber), silicone and / or polyurethane.
Durch eine Entwässerungsleitung kann Kondenswasser aus dem Innenraum des Kanals abgeführt werden, wodurch vor allem Probleme bei der Inbetriebnahme nach einer längeren Stillstandszeit vermieden werden.Through a drainage line condensation can be removed from the interior of the channel, which especially problems during startup after a long downtime can be avoided.
Nachfolgend werden Ausführungsformen der Erfindung unter Bezugnahme auf die Zeichnung erläutert. In der Zeichnung zeigen:Hereinafter, embodiments of the invention will be explained with reference to the drawings. In the drawing show:
Ein Klärbecken einer Kläranlage trägt in den
Die Reinigung des Abwassers
Die Belüftungsvorrichtung
Die Anschlussstutzen
Die Anbindung des Kanals
Die Membran
Unmittelbar auf dem Boden
Aus
Die Membran
In den
Im Betrieb hat der Kanal
Durch den Druck im Innenraum
Eine alternative Ausführungsform zeigt
Im Unterschied zu der Ausführungsform der
Bei einer nochmals anderen Ausführungsform entsprechend
Eine nochmals andere Variante zeigt
Der Schlauch
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810029273 DE102008029273B4 (en) | 2008-06-19 | 2008-06-19 | Device for gassing a liquid, in particular for aerating wastewater, and clarifiers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810029273 DE102008029273B4 (en) | 2008-06-19 | 2008-06-19 | Device for gassing a liquid, in particular for aerating wastewater, and clarifiers |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102008029273A1 DE102008029273A1 (en) | 2009-12-24 |
DE102008029273B4 true DE102008029273B4 (en) | 2012-12-20 |
Family
ID=41334923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810029273 Expired - Fee Related DE102008029273B4 (en) | 2008-06-19 | 2008-06-19 | Device for gassing a liquid, in particular for aerating wastewater, and clarifiers |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102008029273B4 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3848111B1 (en) * | 2020-01-08 | 2021-12-15 | Arnold Jäger Holding GmbH | Strip fan and fan arrangement |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2261994A1 (en) * | 1972-12-19 | 1974-06-20 | Martin Dipl-Ing Danjes | Effluent treatment plant aerator - having an elastic membrane-type air tube |
EP0385965A1 (en) * | 1989-02-13 | 1990-09-05 | Christ AG | Device for fine bubble aeration of waste water |
EP0586329A1 (en) * | 1992-08-31 | 1994-03-09 | Bontec Ag | Fine-bubble diffuser, especially for water aeration |
EP0947471A1 (en) * | 1998-03-03 | 1999-10-06 | Huber + Suhner AG Kabel-, Kautschuk-, Kunststoffwerke | Aerating device for water and method for manufacturing an aerator |
DE20015924U1 (en) * | 2000-09-14 | 2001-03-08 | Uta Umwelttechnik & Analytik G | Aeration device for wastewater treatment tanks |
AT412760B (en) * | 2002-05-07 | 2005-07-25 | Udo Dipl Ing Meyer | Aeration unit based on supported, perforated membrane for waste water treatment plant, includes mounting grooves for membrane with cheek on upper surfaces |
CH695187A5 (en) * | 2001-07-21 | 2006-01-13 | Bontec Ag | Belufterplatte to Wasserbeluftung. |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10251494A1 (en) | 2001-11-02 | 2003-07-03 | Werkstoff & Funktion Grimmel W | Plate aerator used in waste water tanks comprises a plate, an air distribution membrane and an air pipe which discharges into an air distribution chamber |
-
2008
- 2008-06-19 DE DE200810029273 patent/DE102008029273B4/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2261994A1 (en) * | 1972-12-19 | 1974-06-20 | Martin Dipl-Ing Danjes | Effluent treatment plant aerator - having an elastic membrane-type air tube |
EP0385965A1 (en) * | 1989-02-13 | 1990-09-05 | Christ AG | Device for fine bubble aeration of waste water |
EP0586329A1 (en) * | 1992-08-31 | 1994-03-09 | Bontec Ag | Fine-bubble diffuser, especially for water aeration |
EP0947471A1 (en) * | 1998-03-03 | 1999-10-06 | Huber + Suhner AG Kabel-, Kautschuk-, Kunststoffwerke | Aerating device for water and method for manufacturing an aerator |
DE20015924U1 (en) * | 2000-09-14 | 2001-03-08 | Uta Umwelttechnik & Analytik G | Aeration device for wastewater treatment tanks |
CH695187A5 (en) * | 2001-07-21 | 2006-01-13 | Bontec Ag | Belufterplatte to Wasserbeluftung. |
AT412760B (en) * | 2002-05-07 | 2005-07-25 | Udo Dipl Ing Meyer | Aeration unit based on supported, perforated membrane for waste water treatment plant, includes mounting grooves for membrane with cheek on upper surfaces |
Also Published As
Publication number | Publication date |
---|---|
DE102008029273A1 (en) | 2009-12-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0174429B1 (en) | Apparatus for the aeration of waste water or similar matter in aeration tanks | |
DE112005001078B4 (en) | Air distributor with means for attaching a perforated aerator membrane | |
EP2293866B1 (en) | Device for inserting gas bubbles into a liquid | |
DE69734525T2 (en) | A DIFFUSER FOR VENTILATING A LIQUID | |
EP0028728B1 (en) | Device for aerating water with fine air bubbles | |
DE102013106845B4 (en) | Device for distributing gases in liquids | |
DE4001201C1 (en) | ||
DE3316140A1 (en) | Surface aerator for gassing liquids with fine bubbles | |
EP1366807A2 (en) | Apparatus for the aeration of water | |
DE2261994A1 (en) | Effluent treatment plant aerator - having an elastic membrane-type air tube | |
DE102008029273B4 (en) | Device for gassing a liquid, in particular for aerating wastewater, and clarifiers | |
EP2363542B1 (en) | Control assembly | |
EP0704237B1 (en) | Device for introducing gas | |
DE202011106471U1 (en) | Heat utilization in sewers | |
DE4206136A1 (en) | Aeration device consisting of base to which membrane is sealed - where membrane is held to rectangular baseplate by surrounding frame sleeve on base projects into air pipe and carries sealing ring | |
EP3570966B1 (en) | Ventilation element | |
EP2374527B1 (en) | Gassing device for intermittent feeding of a gas into a liquid | |
DE102009060185A1 (en) | Pipe ventilator comprises a perforated hose that is made of elastic materials and is arranged on a plastic support tube to be connected with an aerator tube, where the support tube has a D-shaped cross-section | |
DE102007020399B4 (en) | Tank, especially underground tank | |
DE10203780A1 (en) | Perforated hose, e.g. for aeration of sewage, comprises a stiffening element along its longitudinal axis at an unperforated wall section, for the delivery of large volumes of air without floating | |
DE102015107607B3 (en) | Water collection box | |
DE10305203A1 (en) | Device for aerating water | |
AT412760B (en) | Aeration unit based on supported, perforated membrane for waste water treatment plant, includes mounting grooves for membrane with cheek on upper surfaces | |
CH695187A5 (en) | Belufterplatte to Wasserbeluftung. | |
EP0806400A1 (en) | Bent aerator |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
R081 | Change of applicant/patentee |
Owner name: SCHMIDT-HOLTHAUSEN, STEPHAN, DE Free format text: FORMER OWNER: SCHMIDT-HOLTHAUSEN, STEPHAN, 74321 BIETIGHEIM-BISSINGEN, DE Effective date: 20110423 |
|
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |
Effective date: 20130321 |
|
R082 | Change of representative | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |