Clarification and solid waste containment system and process

Details Clarification and solid waste containment system and process Clarification and solid waste containment system and process

1999-02-12

2001-01-30

Simmons, David A. (Department: 1724)

Liquid purification or separation

Serially connected distinct treating with or without storage...

One unit inside another

C210S261000, C210S474000, C210S514000

Reexamination Certificate

active

06180006

ABSTRACT:

FIELD OF THE INVENTION
This invention relates to apparatus and methods for the collection and removal of waste products from liquids. More particularly, this invention relates the collection and sedimentation of solids from a fluid stream.
BACKGROUND OF THE INVENTION
The use of screens and filters to remove solid material that is suspended or otherwise part of a fluid stream has been well known. Examples of this can be seen in industry, such as conventional dual basket strainers that are placed in the stream of a chemical to be added to a manufacturing process. The strainers are placed in the stream to assure that solid material, such as dirt from a storage tank, or dried or congealed chemical itself does not reach the manufacturing process, where it could disrupt production. As one strainer fills up or becomes clogged, the flow of the stream is switched to the other. The off line strainer, the one that has clogged, is then removed and cleaned. In this way the flow of the chemical to the manufacturing process is not disrupted.
This example of an apparatus and method of removing solid material from a fluid stream illustrates a problem with prior art filtration and straining devices. These devices fill up with material, which reduces their through put, ultimately plugging and stopping flow. This requires that they be frequently cleaned, which can be an expensive and time consuming process.
SUMMARY OF THE INVENTION
This invention is an improvement over the prior art in the type of apparatus that is used, the manner in which the fluid stream is clarified and in the ability of the apparatus to remain free from plugging for an extended period.
In one embodiment of the invention there is provided a clarification unit comprising: a collection basin having sides, a top opening and a closed bottom; the collection basin having an opening in the sides near the top; a final fluid removal section comprising sides, a top and a bottom, the bottom and the top of the final fluid removal section each having an opening; the final fluid removal section being attached to the top of the collection basin; and an inlet tube that extends from the top of the final fluid removal section to a point above the bottom of the collection basin.
In another embodiment of the invention there is provided a clarification unit comprising: a collection basin having sides, a top opening and a closed bottom; the collection basin having an opening in the sides near the top; a basket strainer located inside the collection basin; and an inlet tube located inside the collection basin and extending from the top of the collection basin to a point above the bottom of the collection basin.
In yet another embodiment of the invention there is provided a clarification unit for attachment to a drain comprising: a collection basin having sides, a top opening and a closed bottom; the collection basin having an opening in the side near the top; an inlet tube located inside the collection basin; the inlet tube extending from a drain to a point above the bottom of the collection basin. In a further embodiment of this embodiment of the invention, the collection basin is made large enough so that it will remain in service without cleaning or removing waste from the unit for at least one year.
In yet another embodiment of the invention there is provided a method of removing waste material from a fluid comprising the acts of passing a fluid into a clarification unit; while in the clarification unit passing the fluid through a tube; the fluid then exiting the tube into the lower portion of a collection reservoir of the clarification unit; solid material settling out from the fluid while in the collection reservoir; the fluid filling the collection reservoir and exiting the collection reservoir from near the top of the reservoir; inverting the clarification unit whereby the settled out solid material is placed against a screen of the clarification unit which provides for fluid removal from the solid.


REFERENCES:
patent: 628146 (1899-07-01), Hungerbuehler
patent: 1029329 (1912-06-01), Walsh et al.
patent: 1070773 (1913-08-01), Callahan
patent: 1245932 (1917-11-01), Larson
patent: 2101978 (1937-12-01), Boosey
patent: 2680251 (1954-06-01), Cotterman
patent: 3516541 (1970-06-01), Hardingham
patent: 6093314 (2000-07-01), Wilson et al.

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