DE1029754B - Ventilation device for fine-bubble aeration of water, especially waste water - Google Patents
Ventilation device for fine-bubble aeration of water, especially waste waterInfo
- Publication number
- DE1029754B DE1029754B DEP16296A DEP0016296A DE1029754B DE 1029754 B DE1029754 B DE 1029754B DE P16296 A DEP16296 A DE P16296A DE P0016296 A DEP0016296 A DE P0016296A DE 1029754 B DE1029754 B DE 1029754B
- Authority
- DE
- Germany
- Prior art keywords
- ventilation
- bubble
- ventilation device
- water
- fine
- 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.)
- Pending
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
-
- 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
- B01F23/23122—Diffusers having elements opening under air pressure, e.g. valves
-
- 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
- B01F23/23123—Diffusers consisting of rigid porous or perforated material
- B01F23/231231—Diffusers consisting of rigid porous or perforated material the outlets being in the form of perforations
-
- 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
- B01F23/231261—Diffusers characterised by the shape of the diffuser element having a box- or block-shape, being in the form of aeration stones
-
- 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
- B01F23/231263—Diffusers characterised by the shape of the diffuser element having dome-, cap- or inversed cone-shape
-
- 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
-
- 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)
- 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)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Description
Belüftungseinrichtung für eine feinblasige Belüftung von Wasser, insbesondere Abwasser Bei der feinblasigen Belüftung von Wasser, insbesondere Abwasser, wie sie z. B. bei Belebtschlammanlagen Verwendung findet, wird Druckluft in das zu behandelnde Wasser eingeblasen. Zum Verteilen der Luft in der Flüssigkeit werden luftdurchlässige Platten, Rohre, Dome od. dgl. aus porösem Material verwendet. Da die feinen Poren der Platten, Rohre, Dome od. dgl. im Laufe des Betriebs durch Öl und Staub oder auch durch im Abwasser befindliche Schmutzstoffe leicht verstopfen, treten beim Betrieb derartiger Anlagen häufig erhebliche Störungen auf, die besonders bei unvorhergesehenen Verstopfungen mitunter zu einer völligen Vernichtung der im Belebtschlammbecken notwendigen Mikroorganismen infolge Sauerstoffmangels führen. Es ist deshalb erforderlich, die Belüftungsanlagen sorgfältig zu beobachten und zu warten und bei beobachteten Verstopfungen rasch für deren Beseitigung zu sorgen.Aeration device for fine-bubble aeration of water, in particular Wastewater In the fine-bubble aeration of water, especially wastewater like them z. B. is used in activated sludge systems, compressed air is in the to be treated Water blown in. Air-permeable ones are used to distribute the air in the liquid Plates, tubes, domes or the like made of porous material are used. Because the fine pores the plates, pipes, domes or the like. In the course of operation by oil and dust or also easily clogged by pollutants in the sewage, occur at Operation of such systems often causes considerable disruptions, especially in the event of unforeseen Blockages sometimes lead to a complete destruction of the activated sludge basin necessary microorganisms as a result of lack of oxygen. It is therefore necessary carefully observe and maintain the ventilation systems and when observed To ensure that blockages are removed quickly.
Der Erfindung liegt die Aufgabe zugrunde, im Falle steigender Verstopfung, insbesondere bei Totalverstopfung, der Platten, Rohre, Dome od. dgl. die Abwasserbelüftung nicht zu unterbrechen. Diese Aufgabe wird dadurch gelöst, daß die feinblasige Belüftungseinrichtung mit einem oder mit mehreren zusätzlichen Luftauslässen für eine grobblasige Belüftung versehen ist, die bei einem bestimmten Druckanstieg in der Luftleitung infolge Verstopfung der feinblasigen Belüftungsorgane in Tätigkeit tritt.The invention is based on the object, in the event of increasing constipation, especially in the case of total blockage, the plates, pipes, domes or the like. The sewage aeration not to interrupt. This object is achieved in that the fine-bubble ventilation device with one or more additional air outlets for coarse-bubble ventilation is provided that at a certain pressure increase in the air line as a result of clogging the fine-bubble ventilation organs come into action.
Wenn auch der Sauerstoffeintrag in das Wasser bei der grobblasigen Belüftung geringer ist als bei feinblasiger Belüftung, so ist doch durch die selbsttätig einsetzende grobblasige Belüftung bis zur Behebung der Verstopfung ein sich selbsttätig einstellender Notbetrieb der Anlage, insbesondere eines Belebtschlammbeckens, gewährleistet.Even if the oxygen entry into the water in the coarse-bubble Ventilation is less than with fine-bubble ventilation, so it is automatic commencing coarse-bubble aeration until the blockage is cleared automatically Stopping emergency operation of the plant, in particular an activated sludge basin, is guaranteed.
Die selbsttätige Freigabe des Luftaustrittes durch die Luftauslässe für die grobblasige Belüftung kann mit an den Luftauslässen vorgesehenen feiler- oder gewichtsbelasteten Ventilen erfolgen. Sie bleiben in normalem Betriebszustand verschlossen und werden bei Verstopfungen des feinporigen Materials der Belüftungselemente durch den sich steigernden Überdruck geöffnet. Es ist weiter möglich, die Luftauslässe für die grobblasige Belüftung mit einem elastischen Werkstoff zu verschließen. Diese Verschlüsse weisen Öffnungen auf, die erst beim Übersteigen des Normaldrucks über ein gewisses Maß die Druckluft nach außen entweichen lassen.The automatic release of the air outlet through the air outlets for coarse-bubble aeration, filing provided at the air outlets can be used. or weight-loaded valves. They remain in normal operating condition and are closed in the event of clogging of the fine-pored material of the ventilation elements opened by the increasing overpressure. It is also possible to use the air outlets to close with an elastic material for coarse-bubble ventilation. These Closures have openings that only open when the normal pressure is exceeded Let the compressed air escape to the outside to a certain extent.
Die zweifellos vorteilhafteste Lösung besteht jedoch darin, an der feinblasigen Belüftungseinrichtung ein oder mehrere Tauchrohre unterhalb der porösen Platten, Rohre Dome od. dgl. anzuordnen, deren Länge in Millimetern größer ist als der in Millimetern Wassersäule ausgedrückte, im Normalbetrieb auftretende Druckverlust in dem porösen Belüftungsmaterial.Undoubtedly the most advantageous solution, however, is to join the fine-bubble aeration device one or more dip tubes below the porous Plates, tubes, domes or the like, whose length in millimeters is greater than the pressure loss that occurs during normal operation, expressed in millimeters of water in the porous ventilation material.
Die Zeichnung zeigt mehrere Ausführungsbeispiele von Belüftungseinrichtungen nach der Erfindung.The drawing shows several exemplary embodiments of ventilation devices according to the invention.
Bei der Form nach Abb. 1 ist in der Seitenwandung 2 des Belüftungskastens 3, der durch die poröse Belüftungsplatte 4 abgeschlossen ist, eine Öffnung 5 vorgesehen, die durch das Ventil 6 verschlossen gehalten wird, das unter dem Druck der Feder 7 steht. Beim Erreichen eines bestimmten Überdrucks wird das Ventil 6 geöffnet, und es erfolgt eine grobblasige Belüftung.In the form of Fig. 1 is in the side wall 2 of the ventilation box 3, which is closed by the porous ventilation plate 4, an opening 5 is provided, which is kept closed by the valve 6, which is under the pressure of the spring 7 stands. When a certain overpressure is reached, the valve 6 is opened, and there is a coarse-bubble aeration.
Bei dem Ausführungsbeispiel nach den Abb.2 und 3, von denen die Abb. 2 einen Längsschnitt und die Abb. 3 einen Querschnitt zeigt, erfolgt die feinblasige Belüftung wie bei der Ausführung nach Abb.1 durch die poröse Platte 4, die den Abschluß des Belüftungskastens 3 bildet. Die Druckluft wird dem Kasten 3 in der üblichen Weise durch die Luftleitung 8 zugeführt. An der Unterseite des Belüftungskastens 3 sind zwei nach unten gerichtete Tauchrohre bzw. Belüftungsrohre 9 angeordnet. Im Normalbetrieb herrscht bei dieser Vorrichtung im Lüftungskanal 3 ein Druck von der Größe p1, bei dem das durch die Tauchrohre 9 eintretende Wasser bis zu der dem Druck p1 entsprechenden Höhe 10 verdrängt wird, so daß die Druckluft nur durch das poröse Filtermaterial entweichen kann. Bei zunehmenden Verstopfungen der Platte 4 steigt der Druck im Belüftungskasten 3 an und erreicht beim Abfallen des Luftdurchtritts durch die Platte auf ein zulässiges Mindestmaß eine Größe p2, bei der die Luft aus den Tauchrohren 9 in grobblasiger Form in das Wasser übertritt. Die Wahl der Länge der Tauchrohre 9 bietet die Möglichkeit, den Eintritt der grobblasigen Belüftung in Abhängigkeit von der Verstopfung der Platte 4 zu regeln.In the embodiment according to Figures 2 and 3, of which Fig. 2 shows a longitudinal section and Fig. 3 shows a cross section, the fine-bubble takes place Ventilation as in the embodiment according to Fig. 1 through the porous plate 4, which is the conclusion of the ventilation box 3 forms. The compressed air is the box 3 in the usual Way fed through the air line 8. At the bottom of the ventilation box 3 two downwardly directed immersion pipes or ventilation pipes 9 are arranged. In normal operation, there is a pressure of 3 in this device in the ventilation duct the size p1, in which the entering through the dip tubes 9 water up to the Pressure p1 corresponding height 10 is displaced, so that the compressed air only through the porous filter material can escape. With increasing blockages of the plate 4 the pressure in the ventilation box 3 rises and reaches when the air passage drops through the plate to a minimum allowable size p2 at which the air is out the immersion pipes 9 passes over into the water in coarse-bubble form. The choice of length the immersion tubes 9 offers the possibility of entry of the coarse-bubble To regulate ventilation depending on the clogging of the plate 4.
Die Abb. 4 und 5 zeigen eine Ausführungsform, bei der an Stelle einer ebenen oder leicht gewölbten Platte 4 nach den Abb. 1 bis 3 Filterrohre 11 oder Filterdome Verwendung finden, die an einem Mittelstück 12 befestigt sind. Die Luftzuführung erfolgt durch das Rohr 13. Das Tauchrohr für die grobblasige Belüftung ist wieder mit 9 bezeichnet. Die linke Seite der Darstellung veranschaulicht den Betrieb bei nicht verstopften Filterrohren 11, bei dem der Druck p1 herrscht, die rechte Darstellung zeigt den grobblasigen Betrieb nach Anwachsen des Drucks auf die GrößeFigs. 4 and 5 show an embodiment in which instead of one flat or slightly curved plate 4 according to Figs. 1 to 3 filter tubes 11 or Find filter domes that are attached to a center piece 12. The air supply takes place through pipe 13. The immersion pipe for coarse-bubble aeration is back denoted by 9. The left side of the diagram illustrates the operation at Unclogged filter tubes 11, at which the pressure p1 prevails, the right representation shows the coarse-bubble operation as the pressure increases to size
Claims (1)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP16296A DE1029754B (en) | 1956-05-18 | 1956-05-18 | Ventilation device for fine-bubble aeration of water, especially waste water |
CH350258D CH350258A (en) | 1956-05-18 | 1957-05-04 | Aeration device for fine-bubble aeration of water, in particular waste water |
FR1175082D FR1175082A (en) | 1956-05-18 | 1957-05-14 | Aeration device for fine bubble aeration of water, especially waste water |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP16296A DE1029754B (en) | 1956-05-18 | 1956-05-18 | Ventilation device for fine-bubble aeration of water, especially waste water |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1029754B true DE1029754B (en) | 1958-05-08 |
Family
ID=7365958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEP16296A Pending DE1029754B (en) | 1956-05-18 | 1956-05-18 | Ventilation device for fine-bubble aeration of water, especially waste water |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH350258A (en) |
DE (1) | DE1029754B (en) |
FR (1) | FR1175082A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1214165B (en) * | 1959-05-15 | 1966-04-07 | Passavant Werke | Method and device for introducing gases into liquids, in particular for aerating waste water |
US3953554A (en) * | 1973-07-11 | 1976-04-27 | Ashland Vault Incorporated | Diffuser for aeration systems |
US4048072A (en) * | 1975-10-23 | 1977-09-13 | Schramm, Inc. | Air diffusers |
DE3014169A1 (en) * | 1980-04-14 | 1981-10-15 | Nordenskjöld, Reinhart von, Dr.-Ing., 8011 Solalinden | Floating air compressor - with open air motor and submerged compressor resting on floats |
US4820412A (en) * | 1986-02-18 | 1989-04-11 | Meyer Rudolphi Karl U | Element for the transfer of gas into liquids, in particular, for the transfer of oxygen in sewage treatment plants |
-
1956
- 1956-05-18 DE DEP16296A patent/DE1029754B/en active Pending
-
1957
- 1957-05-04 CH CH350258D patent/CH350258A/en unknown
- 1957-05-14 FR FR1175082D patent/FR1175082A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1214165B (en) * | 1959-05-15 | 1966-04-07 | Passavant Werke | Method and device for introducing gases into liquids, in particular for aerating waste water |
US3953554A (en) * | 1973-07-11 | 1976-04-27 | Ashland Vault Incorporated | Diffuser for aeration systems |
US4048072A (en) * | 1975-10-23 | 1977-09-13 | Schramm, Inc. | Air diffusers |
DE3014169A1 (en) * | 1980-04-14 | 1981-10-15 | Nordenskjöld, Reinhart von, Dr.-Ing., 8011 Solalinden | Floating air compressor - with open air motor and submerged compressor resting on floats |
US4820412A (en) * | 1986-02-18 | 1989-04-11 | Meyer Rudolphi Karl U | Element for the transfer of gas into liquids, in particular, for the transfer of oxygen in sewage treatment plants |
Also Published As
Publication number | Publication date |
---|---|
CH350258A (en) | 1960-11-15 |
FR1175082A (en) | 1959-03-19 |
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