CA1122726A - Lagoon barrier - Google Patents

Lagoon barrier

Info

Publication number
CA1122726A
CA1122726A CA319,237A CA319237A CA1122726A CA 1122726 A CA1122726 A CA 1122726A CA 319237 A CA319237 A CA 319237A CA 1122726 A CA1122726 A CA 1122726A
Authority
CA
Canada
Prior art keywords
lagoon
barrier
dam
aerators
set forth
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.)
Expired
Application number
CA319,237A
Other languages
French (fr)
Inventor
Peter J. Tolan
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.)
Goodrich Corp
Original Assignee
BF Goodrich Corp
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 BF Goodrich Corp filed Critical BF Goodrich Corp
Application granted granted Critical
Publication of CA1122726A publication Critical patent/CA1122726A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A10/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
    • Y02A10/11Hard structures, e.g. dams, dykes or breakwaters
    • 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

  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

Attorney's File No. 1780001 LAGOON BARRIER
ABSTRACT OF THE DISCLOSURE
A deployed floating barrier separating a lagoon into a plurality of adjacent individual ponds with each pond having a plurality of spaced aerators therein to agitate and aerate the fluids therein and causing a flow pattern that involves all of the fluids of the lagoon, presenting a non-linear circuitous route. Such floating barrier is capable of channeling the current to flow throughout the lagoon to prevent a short circuit of the current through the lagoon. Aerators within such lagoon permit the discharge of matters with biological oxygen deficiency therein. Such floating barrier can be located to deflect fluids along a portion of a stream to prevent a thermal barrier from forming across the stream by deflect-ing the warm discharge fluids against the barrier and directing them longitudinally along a continuous path in the direction of the stream until the discharge fluids are sufficiently cooled to the temperatures of the fluids in the adjacent currents.

Description

1~22~7Z6 This invention relates to floating barriers and more particularly to floating barriers that alter the current f 10~J path to improve current movement.
- In the movement of fluids in lagoons, pools or artificial bodies of water, the current often has a direct passage therethrough leaving considerable stagnation of the fluids and the substances suspended therein in the - other portions of the lagoons, pools, or the artificial body of water. Aerators located within the body of fluids that the current traverses does not, supply suffi-cient movement from the stagnation points to the more turbulent current that passes through the body of fluids.
By locating floating barrier directly across t~e current or f low path, the current would be diverted into a circuitous path with aerators located throughout to materially improve the flow pattern which affects the entire body of f luid in the concerned body of water. The barrier may extend to the full depth of the lagoon, where-by the f luid path of the current is then operative to flow around the barrier. Where the flotation barrier extends completely across the lagoon, then the current flow must be down and below the barrier. A floating barrier is of particular use in those instances where a generating station discharges warm water into a stream or river which discharge would ordinarily form a thermal , -barrier laterally across the entire river thereby preventing the migration of fish upstream to spawn. By discharging the warm water against a barrier that is located in the general direction of the current flow with- -in the river, the warm water is cooled gradually along the longitudinal direction thereby preventing thermal pollution of the river. Thus, the floating barrier provides improved flow path to the current, improving aeration of the body of water and preventing stagnation thereof.

~q.,~ ~

1122~26 The present invention contemplates a floating barrier which separates a lagoon or other corresponding body of water that has a current flow therethrough into a plurality of separate bodies of water whereby the current is deflected into a circuitous path to assure elimination of stagnant pools. Such floating barrier may be located in a river or stream being disposed in a direction parallel to the general current to deflect a discharge into the river or thermally polluting water as a flume along the path of the river allowing the warm discharge water to gradually cool down to the temperature of the surrounding waters.
According to the invention there is provided a system for the control of fluid flow in a lagoon having an inlet and a discharge means and for altering the flow path of current through such lagoon comprising a barrier located between said inlet and discharge means~ said barrier having a vertical dam portion and a flotatable element therein for floating said barrier in said lagoon, said dam extends downwardly to the bottom of said lagoon, ballast means connected to said barrier to retain said barrier in its location in said lagoon, said barrier extending laterally across said lagoon to interrupt the natural current flow in said lagoon, and the length of said barrier being less than the distance across said lagoon at the location of said barrier to provide a narrow passageway thereby which directs the current flow within said lagoon from said inlet to said outlet around said barrier in a circuitous, non-linear path.
The invention is illustrated in particular and preferred embodiments by reference to the accompanying drawings in which:

- . .

-. .

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Fig. 1 is a plan view of a lagoon illustrating one embodiment of my invention, Fig. 2 iq a side elevational view taken along line 2-2 of Fig. 1 showing the floating barrier and aerator, Fig. 3 is an isometric view of the structure of the invention disclosing a pair of barrier sections connected with section joiners.
Fig. 4 is a plan view of a river illustrating another embodiment of my invention, Fig. 5 is a plan view of a lagoon illustrating another embodiment of my invention.
Fig. 6 is a side elevational view taken along line 6-6 of Fig. 5 showing the barrier, aerator, and the flow path.
Referring to the drawings, wherein like reference numerals designate like or corresponding partq throughout the ~everal views, there is shown in Fig. 1 a stream or river R flowing into a lagoon or lake L with an exit stream or river E. The lagoon L is illustrated as a generally circular configuration; however the scope of the ' ~
~.

112Z7;~6 invention is applicable to any other type of configuration.
Under normal conditions the water from river R would seek the shortest flow path to the river E, establishing a current as illustrated by the dotted arrows in Fig. 1 leaving the major portion of the lagoon L substantially stagnant. The dotted arrows illustrating the current flow represents that part of the fluid body which moves continuously in a direction from river R to river E.
A floating barrier represented by numeral 10 in Fig. 1 is positioned within the lagoon and extends from point A located on the shoreline of lake L to which shore-line it is attached, to a point B, a substantial distance from the point A and adjacent to the opposite side of the lagoon to divide the lake into two substantially separate lagoons, ponds, or la~es. The floating barrier 10 is composed of a plurality of barrier sections suitably connected together to form an elongated floating barrier.
A typical barrier section consists of a vertical dam 11 sandwiched between two D-shaped hollow flotation elements, generally designated 12. The dam 11 extends downwardly a sufficient distance to rest on the bottom of the lagoon.
The lowermost edge of such dam 11 has a ballast 13 suitabl~ mounted or attached thereto. The flotation elements 12 are substantially continuous along the total length of the lagoon barrier, thereby providing a uniform configuration and stability along the entire length of the total barrier regardless of the total length of the barrier. Vertical plastic ribs 14 can be located along the length of each barrier section at suitable intervals to provide stiffness to the ribs. The ribs extend from a point at the bottom edge of one side of the dam 11 vertically upward against the dam 11, over the top of the dam, downward on the opposite side of the dam 11, around the hollow flotation element 12, and on down to the bottom edge of the dam 11 to the starting point.

- ~-llZZ726 Such rib 14 is bonded, sealed or otherwise tightly fastened against the dam.
Such flotation barrier utilizes a section joiner designated 15 to provide a flexible, quick-joining, and releasing method which is compatible with the invention.
The joiner 15 has a piano hinge-type plastic fitting which is attached to the ends of each barrier section or to other components to form the floating barrier. Such sections may be joined by lacing to form the continuous barrier. The joiner hinge 15 is folded around the end of the dam 11 and bonded to the dam. The-length of the dam 11 is selected to substantially equal the depth of the lake or lagoon L; however to facilitate assembling, the barrier sections may have additional lower sections attached thereto after positioning within the water where larger depths are encountered. In addition to the ballast edge 13, the lower portion may have anchors attached or connected to the lower edges to assure non-movement of the floating barrier when located in its desired position.
For a more detailed explanation of the barrier sections, see U.S. Patent 3,859,7Q6.
There are right and` left hand joiners 15 which when joined bring the sections or components closely together in the same plane vertically and horizontally. The snugging of joiners 15 as pin 18 is inserted provides a close fit.
: Once the floating barrier 10 is located within the lake or lagoon L, a plurality of aerators 20 are positioned within the lake. Such aerators include a submersible diffuser 21 to which is connected an air line 22 which receives its air supply from an air supply conduit 23 which in turn is connected to an air compressor 24 which is suitably powered. The current flow from the river R is now depicted by the solid arrows which now moves substantially a constant flow of water throughout the entire lake or lagoon.
B

.......... .......

l~Z~26 A modification of the invention is shown in Fig. 4 wherein a river 30 has an electric generating station 31 built on the bank thereof. The generating station has an intake on such river 30 which it discharges into a flume 32 at a temperature substantially above the temperature of the water in the river 30. The hot water exits from the flume 32 at a point C on the river 30, which hot water is depicted by arrows 35.
A flotation barrier 36 similar to barrier 10 described in the first embodiment is positioned in the river 30 closely adjacent to the discharge end of the flume 32 and extends parallel to the adjacent bank to form a flume allowing the warm discharge water to gradually cool down due to the convention currents and radiation. If barrier 36 were not positioned in the location as described and shown, a thermal barrier would extend across the entire width of the river and prevent the fish from going up river to spawn. A mechanical aerator 37 could be placed in the flume 32 to aerate the water. Barrier 36 can be suitably anchored or collected - via suitable guidelines to supports on the river bank to retain the barrier in its desired position relative to the stream or current.
A further modification is shown in Fig. 5 wherein a lagoon 50 has a pair of flotation barriers 51 and 52 positioned across the lagoon to divide the lagoon in three equal ponds 53, 54, and 55. The flotation barriers 51 and 52 are similar to flotation barrier 10 described above;
however the depth of the barriers 51 and 52 is such as to permit the flow of water thereunder, so that t~e water from pond 53 flows into pond 54, and the water from pond 54 flows into pond 55. The barrier 51 as shown in Fig. 6 has a dam 56 whose skirt portion 57 extends approximately to one-half the depth of the water. The barriers 51 and 52 are connected to the respective side edges of the lagoon.

~122726 An entrance weir 60 is loca.ted at one end of the lagoon 50 and an outlet 61 is located at the opposite end of thè lagoon. Without the barriers, the flow path of the waters would be along a straight linear route; however this would cause considerable stagnation in the lagoon.
Aerators 65, similar to those described in the first embodiment in cooperation with the flotation barriers 51 and 52, cause a thorough overall mixing and enhance oxidation. The flow path of the current as depicted by the solid arrows in ~igs.5 and 6 cause a complete and thorough mixing of the fluids.
It will be apparent that although a specific embodiment and certain modifications of the invention has . been described in detail, the invention is not limited to the specifically illustrated and described constructions since variations may be made without departing from the pFinciple~ o~ ~he nvention.

.

- ~ .

Claims (14)

The embodiments of the invention in which an exclusive pro-perty or privilege is claimed are defined as follows.
1. A system for the control of fluid flow in a lagoon having an inlet and a discharge means and for altering the flow path of current through such lagoon comprising a barrier located between said inlet and discharge means, said barrier having a vertical dam portion and a flotatable element therein for floating said barrier in said lagoon, said dam extends downwardly to the bottom of said lagoon, ballast means connected to said barrier to retain said barrier in its location in said lagoon, said barrier extending laterally across said lagoon to interrupt the natural current flow in said lagoon, and the length of said barrier being less than the distance across said lagoon at the location of said barrier to provide a narrow passageway thereby which directs the current flow within said lagoon from said inlet to said outlet around said barrier in a circuitous, non-linear path.
2. A system as set forth in claim 1, wherein said lagoon has a plurality of spaced aerators therein, and gas generating means connected to said aerators intro-ducing pressurized air to said spaced aerators for creating and maintaining eddy currents throughout said lagoon.
3. A system as set forth in claim 2, wherein said gas generating means is a plurality of compressors operative to supply said pressurized air to said aerators.
4. A system for the control of fluid flow in a lagoon having an inlet means and a disc harge means, said lagoon having a floating barrier therein for altering the flow path of a current through said lagoon, said barrier having a plurality of boom sections interconnected to form said barrier, each boom section includes a dam and a flotation element for retaining a portion of said section above the water line, ballast means located on the lower portion of said sections to maintain said lower portion on the bottom of the lagoon, said floating barrier extending substantially across said lagoon to divide said lagoon into two sections with a narrow passageway interconnecting said lagoon sections, and one of said lagoon sections communicating with said inlet means and the other of said lagoon sections communicating with said discharge means.
5. A system as set forth in claim 4, wherein aerator means are located in each of said lagoon sections for circulating the waters surrounding said aerators, and com-pressor means operatively connected to said aerators to provide pressurized fluids thereto for dispensing by said aerators.
6. A system as set forth in claim 1, which includes a plurality of laterally spaced barriers, each of said barriers extending transversely across said lagoon, each of said barriers having a dam and a flotation element for retaining the top portion of said dam above the water line of said lagoon, each of said dams extending downwardly towards the bottom of said lagoon to provide a clearance space between said dam and the bottom of said lagoon, said barriers dividing said lagoon into a plurality of compart-ments, and aerator means mounted in each of said compartments to provide aeration and movement of the waters therethrough from said inlet to said outlet and for movement beneath said barriers.
7. A system as set forth in claim 6, wherein each said dam extends downwardly into said lagoon for approximately one-half the depth thereof.
8. A system as set forth in claim 6, wherein com-pressor means are connected to said aerator means for supply of pressurized fluids thereto for creating eddy currents in said lagoon.
9. A system for the control of fluid flow in a lagoon having side edges along the entire periphery, a bottom surface, an inlet means and a discharge means, said inlet means and said discharge means being spaced from each other; a barrier located in said lagoon between said inlet means and said discharge means; said barrier extending across said lagoon to divide said lagoon into two lagoon portions; said barrier having a vertical dam portion and a flotatable element therein for floating said barrier in said lagoon; said dam extends downwardly to said bottom of said lagoon; ballast means connected to said barrier to retain said barrier in its location in said lagoon; said barrier extending laterally across said lagoon to interrupt the natural current flow in said lagoon between said inlet means and said discharge means; and the length of said barrier being less than the distance across said lagoon at the location of said barrier to define a narrow passageway between a side edge of said lagoon and the adjacent end portion of said barrier to thereby direct the current flow within said lagoon from said inlet means to said discharge means around said barrier in a circuitous, non-linear path.
10. A system for the control of fluid flow in a lagoon as set forth in claim 9, wherein each of said lagoon portions has at least one aerator therein, and gas generating means connected to said aerators for introducing pressurized air to said aerators for creating and maintaining eddy currents throughout each of said lagoon portions.
11. A system for the control of fluid flow in a lagoon as set forth in claim 10, wherein said gas generating means is a plurality of compressors operative to supply said pressurized air to said aerators.
12. A system as set forth in claim 9, which includes a plurality of laterally spaced barriers; each of said barriers extending transversely across said lagoon from one side edge to an opposite side edge to divide said lagoon into a plurality of compartments; each of said barriers having a dam and a flotation element for retaining the top portion of said dam above the water line of said lagoon, each of said dams extending downwardly towards the bottom surface of said lagoon to provide a clearance space between said dam and the bottom surface of said lagoon; and aerator means mounted in each of said compart-ments to provide aeration and movement of the waters through said compartments from said inlet to said outlet and for movement beneath said barriers.
13. A system as set forth in claim 12, wherein each of said dams extends downwardly into said lagoon for approximately one-half the depth of fluid in said lagoon.
14. A system as set forth in claim 12, wherein com-pressor means are connected to said aerator means for supply pressurized fluids thereto for creating eddy currents in said lagoon.
CA319,237A 1978-01-06 1979-01-08 Lagoon barrier Expired CA1122726A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US86739878A 1978-01-06 1978-01-06
US867,398 1978-01-06

Publications (1)

Publication Number Publication Date
CA1122726A true CA1122726A (en) 1982-04-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA319,237A Expired CA1122726A (en) 1978-01-06 1979-01-08 Lagoon barrier

Country Status (2)

Country Link
JP (1) JPS5499332A (en)
CA (1) CA1122726A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4879046A (en) * 1987-06-18 1989-11-07 Kaiyo Kogyo Kabushiki Kaisha Local water cleaning method for use in consecutive water areas

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01102117A (en) * 1987-10-16 1989-04-19 Nippon Solid Co Ltd Collection of floating substance in river or the like
KR101554676B1 (en) * 2014-02-14 2015-09-25 주식회사 아앤시티 Cooling facility with indise circulation of recycling having delay discharge structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4879046A (en) * 1987-06-18 1989-11-07 Kaiyo Kogyo Kabushiki Kaisha Local water cleaning method for use in consecutive water areas

Also Published As

Publication number Publication date
JPS5499332A (en) 1979-08-06

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