Plate settler cover and method

Abstract

The present invention is directed to a plate settler cover that prevents algae growth, prevents contamination from organic material, and provides structural support for a user who is standing or walking on the plate settler system. The plate settler covers can either float directly on standing water present in the system or may be structurally supported such that the plate cover is positioned above the surface of the water.

Claims

1. A plate settler system, comprising: a plurality of plate settlers, wherein the plate settlers are disposed below some depth of liquid; a plurality of troughs adjacent to the plate settlers; and a plurality of plate settler covers, wherein the plate settler covers are adapted to float freely on the liquid.

2. The plate settler system of claim 1, wherein the plurality of plate settler covers substantially blocks sunlight from reaching a surface of the liquid.

3. The plate settler system of claim 1, wherein the plurality of plate settler covers is insulated and prevents freezing of the liquid.

4. The plate settler system of claim 1, wherein the plurality of plate settler covers prevents a contaminant from comingling with the liquid, the contaminant comprising at least one of trash, bird feces, leaves, and organic matter.

5. The plate settler system of claim 1, wherein at least one of the plurality of plate settler covers is adapted to distribute and support a weight of at least about 120 pounds, whereby a human operator may walk on a top surface of the least one plate settler cover such that neither the top surface of the at least one plate settler cover nor the operator becomes partially submerged in the liquid.

6. The plate settler system of claim 5, wherein the plurality of plate settler covers comprises a stability aid to improve the stability of the operator when standing or walking on a plate settler cover, the stability aid comprising at least one of ribs, divots, mounds, a friction-increasing laminate, a friction-increasing coating, and a friction-increasing film.

7. The plate settler system of claim 1, wherein the plurality of plate settler covers comprises at least one of cell foam, an air-entrapped plastic structure, and an inflatable structure.

8. The plate settler system of claim 1, wherein the plurality of plate settler covers comprises an interconnection means for selectively interconnecting at least one plate settler cover to at least one plate settler, the attachment means comprising at least one of a lock, a plurality of support legs, a latch, and a component of a hook-and-loop fastener.

9. The plate settler system of claim 1, wherein the plurality of plate settler covers comprises a material, laminate, or coating that is resistant to at least one of algae growth and rust.

10. The plate settler system of claim 1, wherein at least one of the plurality of plate settler covers comprises a winding mechanism, the winding mechanism adapted to retract the at least one plate settler cover.

11. A method for preventing contamination of liquid in a plate settler, comprising: a) providing at least three covers for the plate settler, the covers configured to be positioned end-to-end over a top portion of the plate settler; b) placing the at least three covers over the top portion of the plate settler such that at least two side edges of each cover descend downward toward the plate settler and either rest on the top portion of the plate settler or float on a surface of the liquid; c) moving individual covers together such that at least one side of each cover at least partially abuts a side of an adjacent cover, wherein the covers collectively act to encompass at least most of the surface of the liquid and reduce the incidence of sunlight on the surface of the liquid; and d) maintaining the at least three covers in place over the top portion of the plate settler such that substantially all sunlight that would otherwise fall on the surface of the liquid is instead reflected or absorbed by an exterior surface of the at least three covers.

12. The method of claim 11, wherein the covers are adapted to distribute and support a weight of at least about 120 pounds to allow a human operator to stand or walk on the exterior surface of the covers without damaging the covers or plate settler.

13. The method of claim 12, further comprising: walking on the exterior surface of at least one cover to remove or perform maintenance on an adjacent cover.

14. The method of claim 11, wherein at least one of steps a) and b) is performed when an ambient temperature is equal to or less than 32 F. to prevent freezing of the liquid.

15. The method of claim 11, wherein the at least three covers are interconnected to form a single cover assembly, the cover assembly being adapted to selectively retract or roll up.

16. The method of claim 11, wherein the covers substantially prevent a volatile solute in the liquid from escaping into a surrounding environment.

17. The method of claim 16, wherein the volatile solute comprises chlorine.

18. The method of claim 11, wherein a gap between an edge of a cover and at least one of an edge of an adjacent cover and the top portion of the plate settler is about 0.25 inches.

19. The method of claim 11, wherein the covers are semicylindrical.

20. A plate settler system, comprising: a plurality of plates, each plate defining a first end, a second end, and a settling surface defined therebetween; a plurality of troughs adjacent to the place settlers; a plurality of plate settler covers, wherein the plate settler covers are adapted to float freely on a surface of a liquid disposed above the plurality of plates.

21. The method as set forth in claim 11, wherein the at least three covers for the plate settler are adapted to float freely on the liquid.

22. The method as set forth in claim 11, wherein said at least three covers are insulated to prevent freezing of the liquid.

23. The method as set forth in claim 11, wherein the at least three covers prevent a contaminant from co-mingling with the liquid, the contaminant comprising at least one of trash, bird feces, leaves and organic matter.

24. The method as set forth in claim 11, further comprising a stability aid to improve the stability of an operator when standing or walking on said at least three covers for the plate settler, the stability aid comprising at least one of ribs, divots, mounds, a friction-increasing laminate, a friction-increasing coating, and a friction-increasing film.

25. The method as set forth in claim 11, wherein the at least three covers comprise at least one of a cell foam, an air-entrapped plastic structure, and an inflatable structure.

26. The method as set forth in claim 11, further comprising interconnecting the at least three covers employing an attachment means comprising at least one of a lock, a plurality of support legs, a latch, and a component of a hook-and-loop fastener.

27. The method as set forth in claim 11, wherein said at least three covers comprises a material, a laminate or coating that is resistant to at least one of algae growth and rust.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0047] FIG. 1 is an embodiment of a plate settler system of the prior art;

[0048] FIG. 2 is an elevated perspective view of one embodiment of the present invention;

[0049] FIG. 3 is an elevated perspective view of one embodiment of the present invention;

[0050] FIG. 4 is a cross-sectional side view of one embodiment of the present invention;

[0051] FIG. 5 is a cross-sectional side view of one embodiment of the present invention;

[0052] FIG. 6 is a cross-sectional side view of one embodiment of the present invention;

[0053] FIG. 7 is an elevated perspective view of one embodiment of the present invention;

[0054] FIG. 8 is an elevated perspective view of one embodiment of the present invention; and

[0055] FIG. 9 is an elevated perspective view of one embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0056] FIG. 1 shows a plate settler system 1 of the prior art without a cover. As shown, without a cover, the plate settler system 1 is open to the environment. As a result, algae grow on the surface of the plate settlers 3, leading to a slippery, thin film of algae on the surface of the plate settlers 3, causing myriad problems for water treatment facilities. For example, maintenance workers, who often need to walk on the plate settlers 3, are exposed to unsafe walking surfaces which increase the risk of injury. As a result, cleaners often must be hired to remove the algae, leading to additional costs. Due to the rate of growth of algae, it is often the case that by the time all of the algae are successfully removed, more algae has already begun to grow. Thus, cleaners are needed on at least a weekly basis, if not more often.

[0057] FIG. 2 shows a plate settler system 1 utilizing the plate settler covers 2 of the present invention. In one embodiment, the plate settler covers 2 are segmented such that four covers 2 are utilized for each plate settler 3. However, one having skill in the art will recognize that the plate covers 2 could be a variety of sizes such that each plate settler 3 utilizes one, two, three, five, six, or any number of covers 2 based on the needs of the user and the design of the plate settler system 1 being utilized.

[0058] In a preferred embodiment, the plate settler covers 2 are made of T-304 stainless steel, 22 gauge with closed cell foam adhered to the underside. However, one having skill in the art will recognize the covers 2 may be made of any number of materials including, but not limited to, metal, aluminum, polymer, plastic, wood, glass, carbon fiber, and cement. In addition, the upper surface of the plate cover 2 may be smooth or may be designed to improve friction between the plate cover 2 and the user walking on the plate cover 2. For example, the plate cover 2 may include ribbing, divots, mounds, or other structures designed to improve the friction. Alternatively, the plate cover 2 may include a friction increasing laminate, coating, or paint which prevents slipping. Additionally, one skilled in the art will further recognize that the plate cover 2 may be provided without cell foam, or that the cell foam may be adhered to the cover 2 in a variety of ways, including being placed inside the plate. Lastly, while cell foam is utilized in a preferred embodiment, one having skill in the art will recognize that any suitable floatation material may be utilized including, but not limited to, the use of air bags or making the plate cover 2 itself from a floating material.

[0059] As further shown in FIG. 2, each plate cover 2 selectively interconnects with the plate settler 3, such that the cover 2 rests in a cavity 4 between the top of the plate settlers 3 and an upper rim 5. In a preferred embodiment, the covers 2 interconnect to the system 1 by resting in the cavity 4 such that the edges of the plate 2 are flush against the upper rim 5 and the bottom of the plate 2 is in contact with the plate settler 3. Further, in this preferred embodiment, the plate cover 2 floats on the surface of the water above the plate settlers 3. However, one skilled in the arts will recognize that a variety of interconnecting means can be utilized including snapping into place, sliding into a track, locking by a locking mechanism, and any other conventional or unconventional means of securing the plate covers 2. Once in place, the plate covers 2 cover the entirety of the plate settlers 3.

[0060] FIG. 3 shows another embodiment of the present invention. As shown, the plate settler system 1 further has a trough 6, which allows the treated water to flow out of the basin. As influent flows through the basin and rises between the plate settlers 3, solids settle out onto the plate settler 3 surfaces. The clarified water is then evenly extracted through a flow control deck 7, and is distributed into the troughs 6 where it flows out of the basin.

[0061] FIGS. 4-6 show various embodiments of the present invention in which the trough 6 of the plate settler system 1 is elevated above the plate settlers 3. As shown in FIG. 4, plate covers 2 may be utilized which float on the surface of the water. In a preferred embodiment, the plate settler covers 2 are made of T-304 stainless steel, 22 gauge with closed cell foam adhered to the underside. However, one having skill in the art will recognize the covers 2 may be made of any number of materials including, but not limited to, metal, aluminum, polymer, plastic, wood, glass, carbon fiber, and cement. Additionally, one skilled in the art will further recognize that the plate cover 2 may be provided without cell foam, or that the cell foam may be adhered to the cover 2 in a variety of ways, including being placed inside the plate. Lastly, while cell foam is utilized in a preferred embodiment, one having skill in the art will recognize that any suitable floatation material may be utilized including, but not limited to, the use of air bags or making the plate cover 2 itself from a floating material.

[0062] Additionally, weir plates 7 are utilized which prevent the cover 2 from moving from side to side. While weir plates 7 are utilized in a preferred embodiment, one having skill in the art will recognize that any conventional or unconventional support structures may be utilized to minimize the side to side movement of the plate covers 2.

[0063] FIG. 5 shows another embodiment of the plate settler system 1 of FIG. 4. In this embodiment, the plate cover 2 is fixed, rather than being free to float. In a preferred embodiment, the plate settler covers 2 are made of T-304 stainless steel, 22 gauge. However, one having skill in the art will recognize the covers 2 may be made of any number of materials including, but not limited to, metal, aluminum, polymer, plastic, wood, glass, carbon fiber, and cement. The plates are fixed through the use of weir plates 7. The cover 2 sits on top of the weir plates 7, preventing the cover 2 from floating. While weir plates 7 are used in a preferred embodiment, one having skill in the art will recognize that any conventional or unconventional support structures may be utilized for supporting the plate cover 2.

[0064] FIG. 6 shows yet another embodiment of the plate settler system 1 of FIG. 4. As shown, the cover 2 of this embodiment covers both the plate settlers 3 and the trough 6. Further, the plate cover 2 of this embodiment is likewise fixed. The plates are fixed through the use of weir plates 7. The cover 2 sits on top of the weir plates 7, preventing the cover 2 from floating. While weir plates 7 are used in a preferred embodiment, one having skill in the art will recognize that any conventional or unconventional support structures may be utilized for supporting the plate cover 2.

[0065] FIG. 7 shows a plate settler system 1 utilizing another embodiment of the plate settler covers 2 of the present invention. As shown, the cover 2 may be configured to roll up, such that it can be stowed away at one end of the plate settler system 1. Accordingly, the plate cover 2 may be made of a material which is elastic or deformable, such as tarp, various polymers, vinyls, etc. Furthermore, the cover itself may be comprised of segments of rigid material such as metal, plastic, wood, various polymers, etc. These segments may then be interconnected via an elastic material which would allow the cover to roll up be stored.

[0066] FIG. 8 shows a plate settler system 1 utilizing another embodiment of the plate settler covers 2 of the present invention. As shown, the covers 2 may be semicylindrical in shape. However, one having skill in the art will recognize that a plurality of shapes may be utilized, including rectangular, triangular, cubical, etc. Further, the covers 2 may segmented along their width and be made of a material which is compressible, such that the segments of the cover 2 can collapse down into a storage area. Alternatively, the compressibility of the covers 2 may be achieved by utilizing segmented covers 2. The segments would then be allowed to fold in on themselves, reducing their size and allowing them to be stored. Alternatively, the segments could be attached in a telescopic manner, such that each segment slides underneath the next until the segments are in a stored position having the width of one segment.

[0067] FIG. 9 shows a plate settler system 1 utilizing another embodiment of the plate settler covers 2 of the present invention. As shown, the covers 2 may be semicylindrical in shape. However, one having skill in the art will recognize that a plurality of shapes may be utilized, including rectangular, triangular, cubical, etc. Further, the covers 2 may be segmented radially, such that the segments of the cover 2 can rotate into a storage area located on a longitudinal edge of the plate settler system 1. The segments may also be made of a compressible material, such that the segments are able to fold in on themselves, reducing their size and allowing them to be stored. Alternatively, the segments could be attached in a telescopic manner, such that each segment slides underneath the next until the segments are in a stored position.

[0068] The foregoing discussion of the invention has been presented for purposes of illustration and description. Further, the description is not intended to limit the invention to the form disclosed herein. Consequently, variation and modification commensurate with the above teachings, within the skill and knowledge of the relevant art, are within the scope of the present invention. The embodiment described hereinabove is further intended to explain the best mode presently known of practicing the invention and to enable others skilled in the art to utilize the invention as such, or in other embodiments, and with the various modifications required by their particular application or uses of the invention.