Method and apparatus for mixing fluids

a technology of fluid mixing and apparatus, applied in water cleaning, filtration separation, separation processes, etc., can solve the problems of reducing the level of hydrogen sulfide gas, releasing sulfides from sewage, and sewage contains a significant amount of potentially volatile dissolved molecular hydrogen sulfide, so as to reduce the gas emission of fluid

USRE40407E1Inactive Publication Date: 2008-07-01VORTEX FLOW
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Patents(United States)
Current Assignee / Owner
Publication Date
2008-07-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method for entraining and mixing gas with liquids within a conduit or drop structure, comprising the channeling of one or more liquid flows into spiral flows of predetermined radius (radii), reducing the predetermined radius (radii) to increase the centrifugal forces acting upon the spiral flow(s) as the spiral flow(s) enter the conduit, and allowing gas access to the conduit to mix with and entrain within the spiral flow within the conduit or drop structure. The method can facilitate the mixing of gas with one or more fluid flows and / or reduce the release of gas emissions from the fluid(s) into the surrounding environment.
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Description

[0001] This application claims the benefit ofis a continuation-in-part <?insert-end id="INS-S-00001" ?>of U.S. patent application Ser. No. 09 / 561,999 filed May 1, 2000, now U.S. Pat. No. 6,419,843 <?insert-start id="INS-S-00002" date="20080701" ?>B2 <?insert-end id="INS-S-00002" ?>which claimed the benefit of provisional patent application No. 60 / 135,476 filed May 24, 1999.FIELD OF USE

[0002] The invention relates generally to applications whereby it is desirous to introduce or reintroduce gas with liquid flowing through pipes, and / or mix two fluids within a pipe. In particular, this method can be used, but is not so limited, to mix and entrain air and other odorous gas emissions into sewage to reduce odorous gas emissions and to reduce hydrogen sulfide corrosion and abrasive wear in waste water conveyance, collection and treatment systems.BACKGROUND OF THE INVENTION

[0003] Throughout past decades, sewers have been utilized to efficiently transport waste water or sewag...

Examples

Embodiment Construction

[0030]FIG. 1 illustrates in a side elevation view one embodiment of a sewer apparatus 10 constructed in accordance with the present invention. Referring to FIG. 1, the sewer apparatus 10 includes an influent line 12, a vortex form 20, a maintenance hole 30, a conduit 40, a flow exit 50, and an effluent line 60.

[0031]The maintenance hole 30 in which the vortex form 20 is disposed may be identified from street level as being below a manhole cover 32. FIG. 1 shows the maintenance hole 30 as being cylindrical in shape and oriented vertically. A lateral line 33 for inputting additional city sewer flowage into the maintenance hole 30 may be disposed below the influent line 12. The base 34 and walls 36 of the maintenance hole 30 are generally concrete. An energy dissipating pool 72, comprised of sewage, forms at the base 34 of the maintenance hole 30. An effluent line 60 is connected to the maintenance hole 30 near the top level of the energy dissipating pool 72.

[0032]As illustrated in FIG...