DE2210185A1 - Compressed air distributor - for use in water,esp sewage,in biological treatment tanks - Google Patents

Compressed air distributor - for use in water,esp sewage,in biological treatment tanks

Info

Publication number
DE2210185A1
DE2210185A1 DE2210185A DE2210185A DE2210185A1 DE 2210185 A1 DE2210185 A1 DE 2210185A1 DE 2210185 A DE2210185 A DE 2210185A DE 2210185 A DE2210185 A DE 2210185A DE 2210185 A1 DE2210185 A1 DE 2210185A1
Authority
DE
Germany
Prior art keywords
water
compressed air
liquid
sewage
air
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
Application number
DE2210185A
Other languages
German (de)
Inventor
Hubert Kirches
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE2210185A priority Critical patent/DE2210185A1/en
Publication of DE2210185A1 publication Critical patent/DE2210185A1/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • C02F3/12Activated sludge processes
    • C02F3/24Activated sludge processes using free-fall aeration or spraying
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20Mixing gases with liquids
    • B01F23/23Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/234Surface aerating
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • C02F3/12Activated sludge processes
    • C02F3/20Activated sludge processes using diffusers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

A flat rectangular duct placed vertically at one edge of the tank has an open port at its base for the liquid, and a side port for the compressed air so that air is distributed into the liquid to entrain it upwards over a first toothed edge weir. The duct extends in a sloping section to the surface of the liquid where it terminates in a pair of toothed edges between which the liquid-air mixt. is projected to fall back onto the surface of the liquid, so increasing the rates of oxygen take-up and bio-degradation, to give a higher prodn. rate from the plant.

Description

Vorrichtung zum Verteilen von Druckluft in Wasser, insbesondere in das Abwasser einer Belebungsanlage Die Erfindung betrifft eine Vorrichtung zum Verteilen von Druckluft in Wasser, vorwiegend in Abwasser einer Belebungsanlage.Device for distributing compressed air in water, especially in the wastewater of an activated sludge plant The invention relates to a device for distributing of compressed air in water, mainly in the wastewater of an aeration plant.

Die Vorrichtung dient dazu das Abwasser einerseits mit der Sauerstoffmenge anzureichern, die die Mikroorganismen zur gewünschten Entfaltung ihrer Tätigkeit benötigen ; andererseits soll mittels der Vorrichtung das Abwasser in einer ständigen Umwälzbewegung gehalten werden, damit sich der Belebtschlamm nicht am Beckenboden absetzen kann.The device serves the wastewater on the one hand with the amount of oxygen to enrich the microorganisms for the desired development of their activity require ; on the other hand, by means of the device, the wastewater should be in a constant state Circulating movement must be maintained so that the activated sludge does not settle on the pool floor can settle.

Zur Verteilung der eingeführten Druckluft in Abwasser werden bisher Belüftungskörper aus feinporiem Material oder Belüftungsrohre, die mit Löchern, Schlitzen oder Düsen versehen sind, angewendet. Durch die in Abwasser enthaltenen Feststoffe - gelöstes Eisen bezw Organismen - können sich diese feinen Öffnungen rasch zusetzen und zu einem Druckanstieg im Belüftungssystem führen, der eine Erhähung des Kraftbedarfes zur Folge hat. Die Reinigung dieser Belüftungskörper ist meistens mit erheblichen Kosten und Betriebsstörungen verbusden, Da sie meist in 3 - 5 m Tiefe unter dem Wasserspiegel angeordnet sind, benötigt man zu ihrer Luftversorgung relativ teure und empf@@dliche Mitteldruckgebläse, Der Erfindung liegt die Aufgabe zugrunde, eine Druckluft-Belüftungsvorrichtung so auszubilden, daß sie möglichst wartungsarm einen guten Sauerstoffeintrag, zusammen mit einer genügenden Umwälzung des Abwassers, gewährleistet und mit einem Niederdruckgebläse betrieben werden kann.To distribute the introduced compressed air in wastewater are so far Ventilation body made of fine-pored material or ventilation pipes with holes, Slits or nozzles are provided, applied. By those contained in wastewater Solids - dissolved iron or organisms - can enter these fine openings clog quickly and lead to an increase in pressure in the ventilation system, which leads to an increase of the power requirement. The cleaning of these aeration bodies is mostly Verbusden with considerable costs and operational disruptions, since they are usually in 3 - 5 m Depth below the water level are required for their air supply relatively expensive and recommendable medium pressure blower, the invention is the task based on a compressed air ventilation device so that it is possible low-maintenance a good oxygen input, together with sufficient circulation of the wastewater, guaranteed and operated with a low pressure fan.

Diese Aufgabe wird erfindungsgemäß dadurch gelößt, daß die Druckluft in einer am Beckenrand angebrachten Kontaktvorrich tung aus Stahlblech oder dgl. in geringer Tiefe einer dem Wasserspiegel über ein nach unten gerichtetes Zahnwehr gleichmäßig mit dem Wasser vermischt wird. Infolge des verminderten spezifischen Gewichtes steigt das Wasser-Luft-Gemisch zwischen zwei Leitblechen nach oben, wird in der Nähe des Wasserspiegels durch nach oben gewichtete Zahnwehre aufgerissen und auf die Wasserfläche verspritzt. Zur Intensivierung der Umwälzgeschwindigkeit in Nähe des Beckenbodens kann an dem zur Bekkenmitte hin angeordneten Ieitblech eine schürzenartige Verlängerung angebracht werden.According to the invention, this object is achieved in that the compressed air in a contact device made of sheet steel or the like attached to the pool edge. at a shallow depth of a dem Water level over a downward one Weir is evenly mixed with the water. As a result of the diminished specific Weight, the water-air mixture rises between two baffles ripped open near the water level by upwardly weighted tooth weirs and splashed on the water surface. To intensify the circulation speed near the bottom of the pool can be on the baffle arranged towards the center of the pool an apron-like extension can be attached.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondare dar n, daß d£w Sauerstoffeintrag somobl mittels einer mittel- bis grobblasigen bruckluft-Belüftung unter Wasser als auch anschließend mittels einer Oberflächenbelüftung dur das Verspritzen des 'Nas :r--Luft-Gemisches auf die Wasseroerfläche geschieht. Die Kontaktvorrichtung ist in der Nähe d-Wasseroberfläche zweckmäßigerweise am Rand des Beckens gut zugcinglich axlgebracht. Sie kann normalerweise nicht verstopfen. Außerdem muß als vorteilhaft herausgestellt werden, daß die Vorrichtung mit einem Niedc--rdruckgebläse (Ventilator) betrieben werden kann.The advantages that can be achieved with the invention are in particular n that the oxygen input somobl by means of medium to coarse-bubble compressed air ventilation under water as well as subsequently by means of surface aeration through the spraying of the 'Nas: r - air mixture happens on the surface of the water. The contact device is conveniently accessible at the edge of the pool near the water surface axl brought. It usually cannot become clogged. Also must be considered beneficial it should be pointed out that the device is equipped with a low-pressure blower (fan) can be operated.

Ein Ausführungsbeispiel der Erfindung ist in der anliegenden Zeichnung dargestellv und wird im Folgenden näher beschrieben: Fig 1 zeigt eine räumliche Darstellung der Kontaktvorrichtung.An embodiment of the invention is shown in the accompanying drawing dargestellv and is described in more detail below: Fig. 1 shows a spatial Representation of the contact device.

Fig. 2 zeigt ihre Anordnung in einem Belebungsbecken. Die Druckluft wird durch eine Luft zuleitung (8) herangeführt und durch den Lufteintrag (1) dem Wasser über ein nach unten gerichtetes Zahnwehr (2) gleichmäßig zugemischt. Das Wasser-Luft-Gemisch (3) steigt zufolge des verminderten spezifischen Gewichtes zwischen den Leitblechen (4 + 5) nach oben. Es wird durch die in der Nähe des Wasserspiegels angebrachten Zahnwehre (6 + 7) aufgerissen und auf die Wasserfläche verspritzt.Fig. 2 shows their arrangement in an aeration tank. The compressed air is brought up through an air supply line (8) and through the air inlet (1) to the Water evenly mixed in via a downwardly directed weir (2). That The water-air mixture (3) increases due to the reduced specific weight between the guide plates (4 + 5) upwards. It is made by being near the water level attached tooth weirs (6 + 7) torn open and sprayed onto the water surface.

Zur Intensivierung der Umwälzgeschwindigkeit in Nähe des Bekkenbodens kann an dem Leitblech (4) eine schürzenartige Verlängerung (9) angebracht werden.To intensify the circulation speed near the bottom of the pool an apron-like extension (9) can be attached to the guide plate (4).

Claims (3)

P A T E N T A N S P R Ü C H E P A T E N T A N S P R Ü C H E Vorrichtung zum Verteilen von Druck7uot in Wasser, vorwiegend in Abwasser einer Belebungsanlage, dadurch gekennzeichnet, daß die Druckluft in geringer Tiefe unter dem Wasserspiegel über ein in dieser Vorrichtung angebrachtes, nach unten gerichtetes Zalmwehr gleichmäßig mit dem Wasser vermischt wird.Device for distributing pressure in water, mainly in sewage an activation system, characterized in that the compressed air is shallow below the water level via a mounted in this device, downwards directed Zalm weir is evenly mixed with the water. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Wasser-Luft-Gemisch zwischen zwei Leitblechen nach oben steigt, in der Nähe des Wasserspiegels durch Zahnwehre aufgerissen und auf die Wasseroberfläche verspritzt wird. 2. Apparatus according to claim 1, characterized in that the water-air mixture rises up between two baffles, near the water level Tooth weirs ripped open and splashed onto the surface of the water. 3. Vorrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet, daß an dem zur Beckenmitte hin angeordneten Leitblech eine schürzenartige Verlängerung angebracht werden kann. 3. Apparatus according to claim 1 and 2, characterized in that an apron-like extension on the guide plate arranged towards the center of the pool can be attached. L e e r s e i t eL e r s e i t e
DE2210185A 1972-03-03 1972-03-03 Compressed air distributor - for use in water,esp sewage,in biological treatment tanks Pending DE2210185A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2210185A DE2210185A1 (en) 1972-03-03 1972-03-03 Compressed air distributor - for use in water,esp sewage,in biological treatment tanks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2210185A DE2210185A1 (en) 1972-03-03 1972-03-03 Compressed air distributor - for use in water,esp sewage,in biological treatment tanks

Publications (1)

Publication Number Publication Date
DE2210185A1 true DE2210185A1 (en) 1973-09-06

Family

ID=5837752

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2210185A Pending DE2210185A1 (en) 1972-03-03 1972-03-03 Compressed air distributor - for use in water,esp sewage,in biological treatment tanks

Country Status (1)

Country Link
DE (1) DE2210185A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2329331A2 (en) * 1975-10-31 1977-05-27 Laurie Alec Hibburd GAS AND LIQUID CONTACT DEVICE
FR2481142A1 (en) * 1980-04-29 1981-10-30 Venturator Ltd DEVICES FOR GASIFYING LIQUIDS AND LIQUID TREATMENT PLANT INCORPORATING SUCH DEVICES
US4306968A (en) * 1978-10-10 1981-12-22 Mcneil Corporation Sewage treatment system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2329331A2 (en) * 1975-10-31 1977-05-27 Laurie Alec Hibburd GAS AND LIQUID CONTACT DEVICE
US4306968A (en) * 1978-10-10 1981-12-22 Mcneil Corporation Sewage treatment system
FR2481142A1 (en) * 1980-04-29 1981-10-30 Venturator Ltd DEVICES FOR GASIFYING LIQUIDS AND LIQUID TREATMENT PLANT INCORPORATING SUCH DEVICES
EP0039204A2 (en) * 1980-04-29 1981-11-04 Venturator Limited Devices for the gasification of liquids and liquid treatment plants including said devices
EP0039204A3 (en) * 1980-04-29 1982-05-05 Venturator Limited Devices for the gasification of liquids and liquid treatment plants including said devices

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