GB2322565A - Rope tethering system for a buoyant water aerator - Google Patents

Rope tethering system for a buoyant water aerator Download PDF

Info

Publication number
GB2322565A
GB2322565A GB9704144A GB9704144A GB2322565A GB 2322565 A GB2322565 A GB 2322565A GB 9704144 A GB9704144 A GB 9704144A GB 9704144 A GB9704144 A GB 9704144A GB 2322565 A GB2322565 A GB 2322565A
Authority
GB
United Kingdom
Prior art keywords
aerator
deployable
rope
water aerator
framework
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.)
Withdrawn
Application number
GB9704144A
Other versions
GB9704144D0 (en
Inventor
Charles Michael Corbett Ross
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 GB9704144A priority Critical patent/GB2322565A/en
Publication of GB9704144D0 publication Critical patent/GB9704144D0/en
Publication of GB2322565A publication Critical patent/GB2322565A/en
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • 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
    • B01F23/2311—Mounting the bubbling devices or the diffusers
    • B01F23/23116—Means for manipulating the bubbling constructions or elements, e.g. for raising or lowering them
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
    • 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)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

A buoyant aerator 1 for oxygenating polluted water and effluent which can be sunk into its working position by ballasting or caused to float to the surface for recovery, includes a ballast unit 4 adjustably-attached to the aerator by a remotely-operated anchor rope 7. The rope 7 is tensioned to cause the aerator to sink, the rope then being tethered on shore-mounted cleat 9. Releasing the rope allows the aerator to float to the surface for recovery by rope 11.

Description

EASILY DEPLOYABLEIRECOVERABLE WATER AERATOR This invention relates to a water and effluent aerator which is easy to deploy and recover.
Water aerators are in wide use to increase the oxygen content of polluted water and effluent in order to promote aerobic activity.
Water aerators comprise air diffusion elements mounted on a framework or structure which is temporarily or permanently placed into the water tank or lagoon to be treated. The diffusion elements are fed with compressed air which forms bubbles in the water causing oxygen to be dissolved into the water.
Because the aerators must be either fixed in place or be relatively heavy to keep them submerged they are difficult to inspect and maintain without draining the tank or, in the case of earth lagoons, without dragging them ashore with risk of damage to the lagoon lining. They are also difficult to place into already full tanks and lagoons and sheer sided tanks.
The air diffuser elements have a limited life and regular inspection is desirable.
According to the present invention there is provided a floating framework with attached air diffusers, air supply manifold, air feed hose attachment and a ballast unit which is adjustably attached to the floating framework by a remotely operated rope system.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which Figure 1 shows in perspective the aerator general arrangement; Figure 2 shows in elevation the aerator in its working position; Figure 3 shows the aerator separated from the ballast and floating; Figure 4 shows in elevation the aerator being hauled to shore.
Referring to the drawing the aerator comprises a framework (1) with attached aerator elements (2) and bouyancy tanks (3). The aerator elements are connected to the air feed system (10) which in this case is part of the framework (1). The ballast unit (4) rests, whilst in use, on the bottom of the lagoon or tank (6) and is connected to the framework (1) by an anchor rope (7) which passes from the aerator to the ballast unit eye (8) and thence via routing eyes (5) as may be required to a shore-mounted cleat (9).
When the anchor rope (7) is tensioned the aerator unit sinks until the bouyancy tanks (3) rest upon the water tank bottom. This is the working position.
When the anchor rope is released from the shore cleat the framework and its attachments float to the surface and may be recovered by pulling on the recovery rope (11).
To replace the aerator the anchor rope (7) is re-tensioned and re-cleated.
The ballast unit may optionally be equipped with a jamming cleat, in place of the eye (8), through which the anchor rope will pass when under the vertical tension applied by the bouyancy of the floating framework. This will fix the floatation unit into place without the need to cleat the anchor line ashore.
Pulling on the recovery line will undo the cleat.
There may be occasions when the most convenient ballast is the tank floor, in which case an eye can be attached directly to the floor.
For use in confined spaces where deploying a ballast weight may be difficult the sinking of the framework may be achieved by allowing the floatation tanks to flood. Compressed air blown into the floatation tanks will cause the framework to rise to the surface for hauling out.

Claims (6)

1. A deployable/recoverable water aerator comprising a floating framework with attached air diffusers, air supply manifold, manifold air feed hose and a ballast unit which is adjustably attached to the floating framework by a remotely operated rope system.
2. A deployable/recoverable water aerator as claimed in Claim 1. where the bouyancy of the framework is remotely adjustable by the venting or flooding of the floatation tanks using compressed air.
3. A deployable/recoverable water aerator as claimed in Claim 1. or Claim 2.
wherein a means is provided to releasably connect via a remotely controllable catch or cleat the bouyant framework to the ballast unit.
4. A deployable/recoverable water aerator as claimed in Claim 1. or Claim 2.
where a means is provided to lower or lift the combined floatation/ballast unit.
5. A deployable/recoverable water aerator as claimed in Claim 1. or Claim 2.
where the air manifold is equipped with a connection system to connect it to one or more similar adjacent manifolds.
6. A deployable/recoverable water aerator unit as claimed in any or all of the above claims where the base of the water tank, lagoon or some part of the fixed structure is used as a ballast element.
GB9704144A 1997-02-28 1997-02-28 Rope tethering system for a buoyant water aerator Withdrawn GB2322565A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9704144A GB2322565A (en) 1997-02-28 1997-02-28 Rope tethering system for a buoyant water aerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9704144A GB2322565A (en) 1997-02-28 1997-02-28 Rope tethering system for a buoyant water aerator

Publications (2)

Publication Number Publication Date
GB9704144D0 GB9704144D0 (en) 1997-04-16
GB2322565A true GB2322565A (en) 1998-09-02

Family

ID=10808451

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9704144A Withdrawn GB2322565A (en) 1997-02-28 1997-02-28 Rope tethering system for a buoyant water aerator

Country Status (1)

Country Link
GB (1) GB2322565A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008005190A1 (en) * 2006-06-30 2008-01-10 Tekni-Plex, Inc. Fine bubble airlift device
US7622040B2 (en) 2006-06-30 2009-11-24 Tekni-Plex, Inc. Fine bubble airlift device
US8622370B1 (en) 2013-08-07 2014-01-07 Bader Shafaqa Alenzi Aerator air distribution manifold

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0431498A1 (en) * 1989-12-05 1991-06-12 Linde Aktiengesellschaft Device for introducing gas into bodies of water

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0431498A1 (en) * 1989-12-05 1991-06-12 Linde Aktiengesellschaft Device for introducing gas into bodies of water

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008005190A1 (en) * 2006-06-30 2008-01-10 Tekni-Plex, Inc. Fine bubble airlift device
US7622040B2 (en) 2006-06-30 2009-11-24 Tekni-Plex, Inc. Fine bubble airlift device
US7954791B2 (en) 2006-06-30 2011-06-07 Tekni-Plex, Inc. Fine bubble airlift device
US8622370B1 (en) 2013-08-07 2014-01-07 Bader Shafaqa Alenzi Aerator air distribution manifold

Also Published As

Publication number Publication date
GB9704144D0 (en) 1997-04-16

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)