CH348125A - Nozzle head for fine-bubble aeration of the water in activated sludge basins u. like - Google Patents
Nozzle head for fine-bubble aeration of the water in activated sludge basins u. likeInfo
- Publication number
- CH348125A CH348125A CH348125DA CH348125A CH 348125 A CH348125 A CH 348125A CH 348125D A CH348125D A CH 348125DA CH 348125 A CH348125 A CH 348125A
- Authority
- CH
- Switzerland
- Prior art keywords
- nozzle head
- head according
- air
- housing
- dependent
- Prior art date
Links
- 238000005273 aeration Methods 0.000 title claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 6
- 239000010802 sludge Substances 0.000 title claims description 4
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 230000013011 mating Effects 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 6
- 239000004744 fabric Substances 0.000 claims 1
- 238000009423 ventilation Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- B01F23/23126—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
-
- 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
- B01F23/2311—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
- B01F23/231143—Mounting the bubbling elements or diffusors, e.g. on conduits, using connecting elements; Connections therefor
-
- 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
-
- 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
- B01F23/231262—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)
- 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
Düsenkopf für eine feinblasige Belüftung des Wassers in Belebtschlammbecken u. dgl. Zur feinblasigen Belüftung von Wässern und Ab wässern, insbesondere in Belebtschlammanlagen, ver wendet man neben Filterplatten, die über die ganze Sohle oder Teile der Sohle des Belüftungsbeckens aus gelegt sind, Belüftungsrohre oder an Luftleitungen an geschlossene Belüftungskästen mit Filterplatten aus Keramik. Diese bekannten Belüftungseinrichtungen haben eine Reihe hinlänglich bekannter mechanischer, betriebstechnischer und wirkungsmässiger Nachteile, die bislang nicht beseitigt werden konnten.
Besonders störend ist der ungleichmässige Luftaustritt bei Be lüftungskästen nach längerer Betriebszeit, der wech selnd und stossweise an verschiedenen Stellen der luftdurchlässigen Platte erfolgt und der damit die an sich vorhandene grosse Fläche für den Luftaustritt nicht voll ausnutzen und eine gleichmässige Belüftung nicht erzielen lässt.
Die Erfindung hat einen Düsenkopf für eine fein blasige Belüftung zum Gegenstand, mit dessen Hilfe sich die bekannten Nachteile sehr weitgehend besei tigen lassen. Kennzeichnend für den Düsenkopf ist ein Gehäuse mit gegen die Seitenwandung hin nach aufwärts gewölbtem Boden und eine zentral im Bo den angeordnete Luftauslassdüse mit Luftaustritts öffnungen im Zylindermantel. Im Gehäuse kann eine auswechselbar eingelegte und mittels einer Klemm vorrichtung festzuziehende, luftdurchlässige Platte, z. B. aus Sintermetall oder Perlongewebe ( Perlon , eingetragene Marke), als oberen luftdurchlässigen Ab schluss des Gehäuses angebracht sein.
Die zentral ge legene Düse selbst kann im Gehäuse eingeschraubt sein, und es ist vorteilhaft, sie in einem konischen Stutzen enden zu lassen, der in einen Gegenkonus des Luftzuführungsrohres einsetzbar ist.
Ein Ausführungsbeispiel der Erfindung zeigt die Zeichnung in drei Figuren. Fig. 1 zeigt eine Draufsicht auf den Düsenkopf, Fig.2 einen Schnitt nach der Linie A-B der Fig. 1 und Fig.3 einen Schnitt nach der Linie C-D der Fig. 2.
Das Luftzuleitungsrohr ist mit 1 bezeichnet, und in dieses tauchen die Lufteinlassstutzen 2 ein, die am oberen Ende mit einem Gewinde 3 versehen sind. In diesem Gewinde 3 ist ein Ring 4 eingeschraubt, dessen Inneres im Oberteil konisch geformt ist. Der Düsenkopf selbst besteht aus einem schalenartigen Körper 5, in dessen Boden die Lufteinlassdüse 6 ein geschraubt ist, aus der luftdurchlässigen Platte 7, z. B. aus Sintermetall, dem Anpressring 8 und aus einer Klemmvorrichtung.
Im vorliegenden Ausführungsbeispiel tragen so wohl das Gehäuse 5 als auch der Pressring 8 gabel artige Nocken 9, 10, in die ein Bolzen 11 (s. Fig. 2, rechte Seite) eingeführt ist. Er greift mit seinem un teren Ende 12 hinter die Nocken 9 und nimmt in seinem Gewinde am oberen Ende eine Mutter 13 auf, mit deren Hilfe die zwischen dem oberen Rand des Körpers 5 und dem unteren Rand des Pressringes 8 eingelegte luftdurchlässige Platte 7 festgezogen wer den kann. Es ist auch möglich, die andere Art der Verschraubung zu wählen, die z. B. auf der linken Hälfte des Ausführungsbeispieles gezeigt wird.
Hier besteht die Befestigung der luftdurchlässigen Platte 7 auf dem Gehäuse 5 ebenfalls aus einem Druckring 8 mit gabelartigen Nocken 10, aber aus mehreren am Umfang der Schale angelenkten, in die Gabelnocken 10 einschwenkbaren und mittels Flügelmuttern 14 gegen den Druckring 8 pressenden Schrauben 15. Die eingeschraubte Luftdüse 6 ist oben durch die Platte 16 abgeschlossen, hat im Zylindermantel Luftaus trittsöffnungen 17, und ihr aus dem Körper 5 her- ausragendes Ende hat einen konischen Ansatz 18, der in den Konus des Ringes 4 hineinpasst. Der Körper 5 und der Druckring 8 können aus Gusseisen sein, die Verschraubung und die Düse 6 hat aus Rotguss oder einem anderen nichtkorrodierenden Metall zu be stehen.
Die als Beispiel dargestellte Ausführungsform zeigt, dass man den Düsenkopf sehr bequem von der Luftzuleitung 1 trennen kann und dass man weiter in der Lage ist, die luftdurchlässige Platte 7 und auch die Düse 6 ohne Schwierigkeiten auszuwechseln und durch den Aufbau des Düsenkopfes aus drei mitein ander leicht zu verbindenden Teilen auch den Guss- körper 5 zu ersetzen.
Die Ausbildung des Gehäuses als Schale mit ge wölbtem, aufwärtsgerichtetem Boden verhindert zu sammen mit dem Luftaustritt in der Zylinderwan dung der Düse gegenüber einem axialen Austritt das direkte Anprallen der Druckluft wider die luftdurch lässige Platte und sorgt für eine Umlenkung, Füh rung und gute Verteilung der Druckluft über die ganze zur Verfügung stehende Luftaustrittsfläche der porösen Platte.
Die poröse Abschlussplatte kann auch gewölbt sein, um sowohl einen Luftstrom in senkrechter Rich tung zu ergeben als auch eine gewisse Streuung nach der Seite zu erreichen.
Mittels des beschriebenen Düsenkopfes tritt nicht nur eine gleichmässige Belüftung des Wassers im Bek- ken ein, sondern es ist auch eine so ausreichende Belüftung. gewährleistet, dass eine weitgehende Öl- und Fettabscheidung in fettigen Wässern erfolgt. Durch die Prallfläche im Kopf der Düse ist eine Trennung des von der Druckluft mitgeführten Öles gegeben. Die Auswechselbarkeit der porösen Platte bietet die Möglichkeit eines einfachen Austausches und einer Reinigung verschmutzter Platten.
Nimmt man als luftdurchlässiges Material poröses Sinter metall, dann ist selbst eine Behandlung mit Laugen und Säuren möglich, da dieses Material eine solche Behandlung verträgt. Die Konusverbindung dient ebenfalls der Schaffung einer bequemen Auswechs lungsmöglichkeit und der Erleichterung der Reini gung, denn der Kopf mit der Düse kann jederzeit leicht aus dem Luftzuführungsrohr herausgehoben werden. Auch die Austauschbarkeit von Düse und Gehäuse ist gegeben.
Nozzle head for fine-bubble aeration of the water in activated sludge basins u. Like. For fine-bubble aeration of water and waste, especially in activated sludge systems, ver used in addition to filter plates that are placed over the entire sole or parts of the sole of the aeration basin, ventilation pipes or on air lines to closed ventilation boxes with ceramic filter plates. These known ventilation devices have a number of well-known mechanical, operational and operational disadvantages which have not yet been able to be eliminated.
Particularly annoying is the uneven air outlet in ventilation boxes after a long period of operation, which occurs alternately and intermittently at different points on the air-permeable plate and which therefore does not fully utilize the large area available for the air outlet and does not allow uniform ventilation to be achieved.
The invention has a nozzle head for a fine bubble ventilation to the object, with the help of which the known disadvantages can be taken to a large extent. Characteristic for the nozzle head is a housing with a base arched upwards towards the side wall and an air outlet nozzle arranged centrally in the base with air outlet openings in the cylinder jacket. In the housing, an interchangeable inserted and by means of a clamping device to be tightened, air-permeable plate, for. B. made of sintered metal or Perlongewebe (Perlon, registered trademark), be attached as the upper air-permeable From circuit of the housing.
The centrally placed nozzle itself can be screwed into the housing, and it is advantageous to let it end in a conical connection piece that can be inserted into a mating cone of the air supply pipe.
The drawing shows an embodiment of the invention in three figures. 1 shows a plan view of the nozzle head, FIG. 2 shows a section along the line A-B of FIG. 1 and FIG. 3 shows a section along the line C-D of FIG.
The air supply pipe is labeled 1, and the air inlet nozzles 2, which are provided with a thread 3 at the upper end, dip into this. In this thread 3 a ring 4 is screwed, the interior of which is conically shaped in the upper part. The nozzle head itself consists of a shell-like body 5, in the bottom of which the air inlet nozzle 6 is screwed, from the air-permeable plate 7, for. B. made of sintered metal, the pressure ring 8 and a clamping device.
In the present embodiment, both the housing 5 and the press ring 8 carry fork-like cams 9, 10 into which a bolt 11 (see FIG. 2, right-hand side) is inserted. He engages with his un direct end 12 behind the cam 9 and takes in its thread at the upper end of a nut 13, with the help of which the air-permeable plate 7 inserted between the upper edge of the body 5 and the lower edge of the press ring 8 tightened who the can. It is also possible to choose the other type of screw connection, e.g. B. is shown on the left half of the embodiment.
Here the attachment of the air-permeable plate 7 on the housing 5 also consists of a pressure ring 8 with fork-like cams 10, but of several articulated on the circumference of the shell, pivotable into the fork cams 10 and pressing against the pressure ring 8 by means of wing nuts 14 screws 15. The screwed The air nozzle 6 is closed at the top by the plate 16, has air outlet openings 17 in the cylinder jacket, and its end protruding from the body 5 has a conical projection 18 which fits into the cone of the ring 4. The body 5 and the pressure ring 8 can be made of cast iron, the screw and the nozzle 6 has to be made of gunmetal or another non-corrosive metal.
The embodiment shown as an example shows that you can very easily separate the nozzle head from the air supply line 1 and that you are also able to replace the air-permeable plate 7 and the nozzle 6 without difficulty and by the construction of the nozzle head from three mitein other Parts that are easy to connect can also be used to replace the cast body 5.
The design of the housing as a shell with a domed, upward-facing base, together with the air outlet in the cylinder wall of the nozzle opposite an axial outlet, prevents the compressed air from directly impacting the air-permeable plate and ensures a deflection, guidance and good distribution of the Compressed air over the entire available air outlet surface of the porous plate.
The porous closing plate can also be curved in order to produce both a flow of air in the vertical direction and to achieve a certain scattering to the side.
By means of the nozzle head described, not only does a uniform aeration of the water in the pool occur, but also sufficient aeration. ensures that extensive oil and fat separation takes place in fatty water. The baffle in the head of the nozzle separates the oil carried by the compressed air. The exchangeability of the porous plate offers the possibility of a simple exchange and cleaning of soiled plates.
If porous sintered metal is used as the air-permeable material, then even a treatment with alkalis and acids is possible, as this material tolerates such treatment. The cone connection is also used to create a convenient replacement option and to facilitate cleaning, because the head with the nozzle can easily be lifted out of the air supply pipe at any time. The nozzle and housing can also be exchanged.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP15063A DE1104445B (en) | 1955-10-28 | 1955-10-28 | Air distribution head for fine-bubble aeration of waste water, especially in activated sludge basins |
Publications (1)
Publication Number | Publication Date |
---|---|
CH348125A true CH348125A (en) | 1960-07-31 |
Family
ID=7365483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH348125D CH348125A (en) | 1955-10-28 | 1956-10-04 | Nozzle head for fine-bubble aeration of the water in activated sludge basins u. like |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH348125A (en) |
DE (1) | DE1104445B (en) |
FR (1) | FR1158408A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4007240A (en) * | 1974-12-06 | 1977-02-08 | Reed International Limited | Supporting arrangements for porous diffusers |
US4629591A (en) * | 1984-08-08 | 1986-12-16 | A. R. Wilfley & Sons, Inc. | Gas diffuser and accompanying piping system |
US4818446A (en) * | 1986-10-30 | 1989-04-04 | Schreiber Corporation, Inc. | Apparatus for introducing a gas into a fluid |
US5204028A (en) * | 1992-08-25 | 1993-04-20 | Aeration Engineering Resources Corporation | Clamp for aeration dome |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB660666A (en) * | 1948-11-19 | 1951-11-07 | Activated Sludge Ltd | Improvements in or relating to means for diffusing gases into liquids |
-
1955
- 1955-10-28 DE DEP15063A patent/DE1104445B/en active Pending
-
1956
- 1956-10-04 CH CH348125D patent/CH348125A/en unknown
- 1956-10-16 FR FR1158408D patent/FR1158408A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4007240A (en) * | 1974-12-06 | 1977-02-08 | Reed International Limited | Supporting arrangements for porous diffusers |
US4629591A (en) * | 1984-08-08 | 1986-12-16 | A. R. Wilfley & Sons, Inc. | Gas diffuser and accompanying piping system |
US4818446A (en) * | 1986-10-30 | 1989-04-04 | Schreiber Corporation, Inc. | Apparatus for introducing a gas into a fluid |
US5204028A (en) * | 1992-08-25 | 1993-04-20 | Aeration Engineering Resources Corporation | Clamp for aeration dome |
Also Published As
Publication number | Publication date |
---|---|
DE1104445B (en) | 1961-04-06 |
FR1158408A (en) | 1958-06-13 |
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