CH363942A - Ventilation rotor for liquids, in particular for waste water purification - Google Patents
Ventilation rotor for liquids, in particular for waste water purificationInfo
- Publication number
- CH363942A CH363942A CH4771757A CH4771757A CH363942A CH 363942 A CH363942 A CH 363942A CH 4771757 A CH4771757 A CH 4771757A CH 4771757 A CH4771757 A CH 4771757A CH 363942 A CH363942 A CH 363942A
- Authority
- CH
- Switzerland
- Prior art keywords
- ventilation
- liquids
- rotor
- waste water
- water purification
- Prior art date
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
- C02F3/14—Activated sludge processes using surface aeration
- C02F3/18—Activated sludge processes using surface aeration the aerator having a horizontal axis
-
- 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
- B01F23/234—Surface aerating
- B01F23/2342—Surface aerating with stirrers near to the liquid surface, e.g. partially immersed, for spraying the liquid in the gas or for sucking gas into the liquid, e.g. using stirrers rotating around a horizontal axis or using centrifugal force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
-
- 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)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Biological Treatment Of Waste Water (AREA)
Description
Belüftungsrotor für Flüssigkeiten, insbesondere zur Abwasserreinigung Das Hauptpatent bezieht sich auf ein Verfahren zum Belüften von Flüssigkehen sowie auf einen Ro tor zur Durchführung dieses Verfahrens. Dieser Ro tor zeichnet sieh gemäss Patentanspruch des Haupt patentes dadurch aus, dass auf einer Welle, über ihre ganze Länge verteilt, mindestens annähernd radial angeordnete Belüftungsstäbe vorgesehen sind.
Die Belüftungsstäbe erzeugen beim Durchlauf durch die Flüssigkeit Saugwirbel. Es hat sich nun gezeigt, dass diese Wirkung erheblich gesteigert werden kann, wenn gemäss vorliegender Erfindung die Belüftungs stäbe ein mehrfach gebogenes Profil aufweisen. Vor- zugsweise weisen sie W-förmiges oder wellenförmiges Profil auf.
Gegenüber den in den Ausführungsbei spielen des Hauptpatentes gezeigten Profilen erreicht man mit den neuen Profilen ein erheblich grösseres Sauerstoffeintragu.ngsvermögen in Gramm pro KWH, und zwar je nach Drehrichtung des Rotors um 25 bis 50 % bei gleichen Bedingungen, z. B. bei glei cher Eintauchtiefe von 13 cm und 100 Umdrehungen pro Minute des Rotors.
Ein solcher Erfolg, der nur auf die Wahl der neuen Profilformen zurückgeht, war nicht zu erwarten.
Die Zeichnung zeigt Ausführungsbeispiele der Erfindung, und zwar in den Fig. 1 und 2 Seitenan sicht und Ansicht eines Rotors und in den Fig. 3 bis 7 Leisten mit den neuen Belüftungsstäben, die als fertige Bauteile in der im Hauptpatent beschriebenen Weise auf der Rotorwelle befestigt werden.
Der Belüftungsrotor nach den Fig. 1 und 2 be- steht aus der Rotorhohlwelle 1, die, wie bekannt, in Lagern gelagert wird, und den darauf mittels Schrau ben 2 lösbar befestigten Tragleisten 3, die die Be- lüftungselemente 4 tragen.
Sie sind auf der Trag leiste aufgeschweisst oder angeschraubt. Es sei be- merkt, dass, man die Profile auch unmittelbar auf der Rotorwelle befestigen kann oder zwischen benach barten Klemmleisten, wie im deutschen Patent Nr.
937160 dargelegt, festklemmen kann. Die Be- festigungslöcher 5 in den Tragleisten 3 sind Längs löcher, um Verschiebemöglichkeiten zu haben. Die Länge der Welle, die Zahl der Stäbe, die Stablänge und ihr Abstand voneinander richten sich nach der Menge des einzutragenden Sauerstoffes und nach der Eintauchtiefe in das zu behandelnde Wasser.
Bei dem Ausführungsbeispiel nach den Fig. 1 bis. 3 hat das Belüftungselement im Querschnitt die Form eines W. Die Fig. 4 zeigt in Ansicht und Querschnitt einen Belüftungsstab mit einem gewellten Profil. Die Fig. 5, 6 und 7 zeigen andere, mehrfach gebogene Pro file.
Allen Profilein ist gemeinsam, dass bei gewähl- ter Breite des Belüftungselementes die Fläche durch mehrfache Biegung erheblich vergrössert ist.
Ventilation rotor for liquids, in particular for wastewater treatment. The main patent relates to a method for aerating liquids and to a Ro tor for carrying out this method. This Ro tor is characterized according to claim of the main patent in that at least approximately radially arranged ventilation rods are provided on a shaft, distributed over its entire length.
The ventilation rods generate suction vortices as the liquid passes through it. It has now been shown that this effect can be increased considerably if, according to the present invention, the ventilation rods have a profile that is curved several times. They preferably have a W-shaped or wave-shaped profile.
Compared to the profiles shown in the exemplary embodiments of the main patent, the new profiles achieve a considerably greater oxygen input capacity in grams per KWH, depending on the direction of rotation of the rotor by 25 to 50% under the same conditions, e.g. B. with equal immersion depth of 13 cm and 100 revolutions per minute of the rotor.
Such a success, which is only due to the choice of the new profile shapes, was not to be expected.
The drawing shows embodiments of the invention, namely in Figs. 1 and 2 Seitenan view and view of a rotor and in Figs. 3 to 7 bars with the new ventilation rods, which are attached as finished components in the manner described in the main patent on the rotor shaft will.
The ventilation rotor according to FIGS. 1 and 2 consists of the rotor hollow shaft 1, which, as is known, is mounted in bearings, and the support strips 3 which are releasably fastened thereon by means of screws 2 and which support the ventilation elements 4.
They are welded or screwed onto the support strip. It should be noted that the profiles can also be attached directly to the rotor shaft or between adjacent clamping strips, as in German Patent No.
937160 set out, can clamp. The fastening holes 5 in the support strips 3 are longitudinal holes in order to have displacement options. The length of the shaft, the number of rods, the rod length and their distance from one another depend on the amount of oxygen to be introduced and the depth of immersion in the water to be treated.
In the embodiment of FIGS. 1 to. 3, the ventilation element has the shape of a W in cross section. FIG. 4 shows in view and cross section a ventilation rod with a corrugated profile. 5, 6 and 7 show other, multiple curved Pro files.
What all profiles have in common is that if the width of the ventilation element is selected, the area is considerably larger due to multiple bends.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP14237A DE1030775B (en) | 1955-06-03 | 1955-06-03 | Ventilation rotor for liquids, especially for waste water |
DEP16615A DE1080938B (en) | 1955-06-03 | 1956-07-09 | Ventilation rotor for liquids, especially for waste water |
Publications (1)
Publication Number | Publication Date |
---|---|
CH363942A true CH363942A (en) | 1962-08-15 |
Family
ID=28675967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH4771757A CH363942A (en) | 1955-06-03 | 1957-06-26 | Ventilation rotor for liquids, in particular for waste water purification |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE558864A (en) |
CH (1) | CH363942A (en) |
DE (1) | DE1080938B (en) |
FR (1) | FR71781E (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19601790C2 (en) | 1996-01-19 | 1998-05-07 | Passavant Werke | Aeration device for waste water |
-
1956
- 1956-07-09 DE DEP16615A patent/DE1080938B/en active Pending
-
1957
- 1957-06-26 CH CH4771757A patent/CH363942A/en unknown
- 1957-07-01 BE BE558864A patent/BE558864A/fr unknown
- 1957-07-08 FR FR71781D patent/FR71781E/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE558864A (en) | 1960-04-08 |
FR71781E (en) | 1960-01-19 |
DE1080938B (en) | 1960-04-28 |
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