AU641451B2 - Device for gassing stretches of water - Google Patents

Device for gassing stretches of water Download PDF

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Publication number
AU641451B2
AU641451B2 AU67776/90A AU6777690A AU641451B2 AU 641451 B2 AU641451 B2 AU 641451B2 AU 67776/90 A AU67776/90 A AU 67776/90A AU 6777690 A AU6777690 A AU 6777690A AU 641451 B2 AU641451 B2 AU 641451B2
Authority
AU
Australia
Prior art keywords
gassing
water
spacers
tube
weighting means
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.)
Ceased
Application number
AU67776/90A
Other versions
AU6777690A (en
Inventor
Reimut Blaschek
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.)
Linde GmbH
Original Assignee
Linde GmbH
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 Linde GmbH filed Critical Linde GmbH
Publication of AU6777690A publication Critical patent/AU6777690A/en
Application granted granted Critical
Publication of AU641451B2 publication Critical patent/AU641451B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F7/00—Aeration of stretches of water
    • 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
    • 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
    • B01F23/23115—Mounting the bubbling devices or the diffusers characterised by the way in which the bubbling devices are mounted within the receptacle
    • B01F23/231154—Mounting the bubbling devices or the diffusers characterised by the way in which the bubbling devices are mounted within the receptacle the bubbling devices being provided with ballast to keep them floating under the surface, i.e. when the bubbling devices are lighter than the liquid
    • 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
    • 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
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/503—Floating mixing devices
    • 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)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Description

COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952 COMPLETE SPECIFICATION NAME ADDRESS OF APPLICANT: Linde Aktiengesellschaft Abraham-Lincoln-Strasse 21 D-6200 Wiesbaden Germany S NAME(S) OF INVENTOR(S):
S
a g Reimut BLASCHEK ADDRESS FOR SERVICE: DAVIES COLLISON Patent Attorneys 1 Little Collins Street, Melbourne, 3000.
COMPLETE SPECIFICATION FOR THE INVENTION ENTITLED: Device for gassing stretches of water 0 *0 The following statement is a full description of this invention, including the best method of performing it known to me/us:- B•Oo The present invention relates to a device for gassing stretches of water comprising at least one gassing tube adapted to be disposed below the water surface.
It is known, for the purpose of rehabilitating stretches of water or for aerating fish tanks, to introduce industrial oxygen into the water in order to raise the level of released oxygen in the water. Often a so-called linear gassing is advantageous, i.e.
the oxygen is introduced into the water via a line extending along the water bottom.
Usually perforated gassing tubes laid on the water bottom are provided for this purpose. The gassing tubes are weighted on the inside with lead wire or steel balls or on the outside with steel cables or chains.
The known gassing system has the disadvantage that, when there is a layer of mud on the water bottom, a major portion of the introduced oxygen is consumed by the mud layer, so that less oxygen is available for the actual gassing of the water.
The object of the present invention is to so design a device of the aforementioned kind that said disadvantage does not occur.
According to the invention, this object is achieved in that the gassing tube is :oi i: *20 connected, by means of spacers, to a weighting means adapted to be disposed on the water bottom parallel to the gassing tube in such a manner that, in use, the gassing tube is held below the water surface by the weighting means, suspended in the water above the weighting means.
25 The gassing tubes float above the water bottom due to their inherent buoyancy and are maintuined at a certain level above the water bottom by means of the spacers '."and the weighting means. The fact that the gassing tubes are floating in the water provides numerous advantages: o *Ollo 9303,p:\Aper\ nIindereW 2 Gassing can be effected at any depth in the water, so that certain targeted areas of water can be gassed. Usually there is a mud layer on the water bottom which consumes large amounts of oxygen and which may be several metres thick.
When the conventional gassing tubes which are disposed on the water bottom are used, a major portion of the introduced gas is lost to the mud layer. In contrast, the device according to the invention provides the possibility to arrange the gassing tubes in a simple manner above the mud layer, so that all of the introduced gas is available for gassing the w ater. This has a positive effect especially in the gassing oo of stretches of water with oxygen. The utilization fact'~ of se the oxygen can be increased markedly, as no oxygen is lost e to the oxygen-consuming mld .layer. Since the gassing tubes 15 are not disposed on the water bottom, the arrangement of the gassing tubes is also independent from the condition of the water bottom. The gassing tubes can always be arranged such that they are suspended in the water in a strictly horizontal position. Even when the linear gassing devices are very long 200 metres and more), the device according to the invention can be very easily transported. The gassing tubes, which have been preassembled to the required lengths, and the weighting means (for example cables or chains) as well as the spacers can be detached from one another. The gassing tubes and the weighting means can be wound onto separate Scable drums for transportation. The gassing device can be readily assembled at the required location, since it is only necessary to connect the gassing tubes to the weighting means through prefabricated spacers. The entire gassing device can then be lowered into the water.
The weighting means is preferably in the form of a cable, advantageously a steel cable, or a chain. The height of the gassing tube above the water bottom or the mud layer can be adjusted by the length of the spacers. The length of the spacers is preferably selected such that the gassing tube floats above the mud layer lying on the water bottom. In a 3 further development of the inventive concept, the lengths of the individual spacers are adjusted to the condition of the water bottom such that the gassing tube floats in the water in a horizontal position. In this manner the water is optimally supplied with the introduced gas.
According to a preferred embodiment of the invention, the spacers' ae arranged along the weighting means at intervals of about 60 to about Qi cm, preferably about 75 cm. This ensures that the gassing tube does not curve upwards too 10 strongly between the spacer. In this manner constrictions 'o0 of the gassing tube at the fastening points of the spacers are avoided.
The spacers are preferably made of a wire which at least partially encircles the circumference of the gassing tube as g. 15 well as the circumference of the weighting means.
The device according to the invention is particularly suitable for introducing oxygen into stretches of water, for example for the rehabilitation of lakes and rivers or for the treatment of waste water in ponds. Instead of oxygen, S 20 however, it is also possible to introduce a different gas into the water. For example', hydrogen can be blown into the water in order to promote denitrifying processes. It is also i possible to ozonize water with the device according to the invention.
The invention will be described in greater detail hereinbelow With reference to an exemplified embodinent which is diagrammatically illustrated in the drawing: The figure shows a gassing tube suspended in water with a spacer and weighting means.
4- In order to rehabilitate a stretch of water, for example a lake, a steel cable 1 is laid on the water bottom as a weight for the gassing tube 2. The steel cable 1 ard the gassing tube 2 are connected to one another by way of a plurality of spacers 3, one of which is illustrated in the drawing by way of example. The spacer 3 consists of a steel wire which is bent, on the one hand, around the gassing tube 2 and, on the other hand, around the steel cable 1 to such an extent that a constant distance is maintained between )q gassing tube 2 and steel cable 1. The gassing tube 2 is supplied with industrial oxygen and floats above the weighting means 1 due to its inherent buoyancy. The length of the Goo spacers 3 is selected such that the gassing tube is suspen- :O ded above the mud layer lying on the water bottom. In this 15 manner the oxygen can be introduced directly into the water.
No oxygen is lost to the oxygen-consuming mud layer. In the on case of an irregular water bottom or varying thicknesses of the mud layer, spacers 3 of different lengths are used, so that the gassing tube 2 always floats at the same height above the mud layer in a horizontal position.
*000 a The distance from one spacer to the next is approximately "S n 75 cm. This ensures that the gassing tube 2 does not curve upwards too strongly between the spacers. Constrictions of the gassing tube 2 at the fastening points of the spacers 3 are thereby avoided.
The gassing device can be easily dismantled for transportation purposes. The spacers 3 can be readily detached from the gassing tube 2 and from the steel cable 1 by simply bending the wire. The gassing tube 2 and the steel cable 1 can then be wound onto separate cable drums.

Claims (6)

1. A device for gassing stretches of water comprising at least one gassing tube which in use of the 4 mse is located below a water surface, wherein the gassing tube is connected, by means of spacers, to a weighting means adapted to be disposed on the water bottom parallel to the gassing tube in such a manner that, in use, the gassing tube is held below the water surface by the weighting means, suspended in the water above the weighting means.
2. A device according to claim 1, wherein the weighting means is in the form of a cable or chain.
3. A device according to claim 1 or 2, wherein the length of the spacers is selected such that the gassing tube is adapted to float above a mud layer lying on the water bottom.
4. A device according to any one of claims 1 ,o 3, wherein the spacers are arranged at intervals of about 60 to about 80 cm. i" 20
5. A device according to any one of claims 1 to 4, wherein the spacers are made of a wire which at least partially encircles both the circumference of the gassing tube and the circumference of the weighting means.
6. A device for gassing stretches of water substantially as hereinbefore described 25 with reference to the drawings. 0 Dated this 1st day of March, 1993 o: LINDE AKTIENGESELLSCHAFT SBy its Patent Attorneys 30 Davies Collison Cave 930301,p:\oper\gjnZindc2.res,5
AU67776/90A 1989-12-05 1990-12-05 Device for gassing stretches of water Ceased AU641451B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3940108 1989-12-05
DE19893940108 DE3940108A1 (en) 1989-12-05 1989-12-05 Gasification of ponds, streams and lakes for fish rearing - uses a buoyant gasification tube and rope or chain sinker line with hooks to keep gasification tube in water above sludge

Publications (2)

Publication Number Publication Date
AU6777690A AU6777690A (en) 1991-06-13
AU641451B2 true AU641451B2 (en) 1993-09-23

Family

ID=6394801

Family Applications (1)

Application Number Title Priority Date Filing Date
AU67776/90A Ceased AU641451B2 (en) 1989-12-05 1990-12-05 Device for gassing stretches of water

Country Status (4)

Country Link
AT (1) AT396229B (en)
AU (1) AU641451B2 (en)
CH (1) CH682660A5 (en)
DE (1) DE3940108A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19836112C1 (en) * 1998-08-10 2000-06-15 Nikolaus Weth Sunken plastic tubing, particularly for the oxidation of sewage or clarification ponds, with inbuilt weights and reagent dispensing perforations that deform to provide uniform flows over a long length
EP1409420A1 (en) * 1999-10-06 2004-04-21 UTA Umwelttechnik & Analytik GmbH Device for aerating natural and artificial waters, containers, tanks and basins
DE10004077C1 (en) * 1999-10-06 2001-06-13 Uta Umwelttechnik & Analytik G Water aeration assembly for ponds has submersible support frame facilitating easy lifting to surface for repositioning
FR2802524A1 (en) * 1999-12-21 2001-06-22 Tech Sub System for the aeration of smooth water stretches or lakes has an upper and perforated horizontal aeration channel to generate bubbles linked to a second ballast channel which follows the contours of the water bed
US10105659B2 (en) * 2013-03-15 2018-10-23 Claudius Jaeger Dual control lateral air manifold assembly
US20220017298A1 (en) * 2020-07-15 2022-01-20 Production Waste Solutions Systems and methods for removing sediment from storage tanks without tank entry

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2398024A1 (en) * 1977-07-19 1979-02-16 Carboxyque Francaise Transportable oxygenator to purify water in lakes - has oxygen cylinder on float which supports immersed diffuser

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3434623A1 (en) * 1984-09-21 1986-04-17 Thomsen, Werner, Dipl.-Ing., 2320 Plön Process and apparatus for supporting the self-purifying power of waters by supplying the deep water with oxygen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2398024A1 (en) * 1977-07-19 1979-02-16 Carboxyque Francaise Transportable oxygenator to purify water in lakes - has oxygen cylinder on float which supports immersed diffuser

Also Published As

Publication number Publication date
AT396229B (en) 1993-07-26
DE3940108A1 (en) 1991-06-06
AU6777690A (en) 1991-06-13
CH682660A5 (en) 1993-10-29
ATA244190A (en) 1992-11-15

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