Claims
- 1. A disinfectant mixing system for an influent treatment system utilizing a contact tank which comprises
- an influent inlet port into the contact tank,
- a manifold fed by the inlet port,
- a pipe bundle fed by said manifold,
- a flat plate orifice high momentum exchange mixing member in each pipe in said bundle,
- means for injecting a disinfecting fluid into each pipe at the point of highest momentum exchange,
- an influent well,
- means to effect influent flow from the influent well to the contact tank,
- an effluent well,
- means to effect flow from the contact tank to the effluent well, and
- a hyperbolic transformed diffuser to deliver the influent from the pipe bundle to the influent well.
- 2. A system according to claim 1 where each pipe of the pipe bundle is between 120 to 150 diameters in length from the point of disinfectant fluid injection, and includes at least two flat plate orifices downstream from the point of disinfectant fluid injection at a minimum of 40 diameters separation.
- 3. A system according to claim 2 where the diffuser is positioned adjacent a vertical wall in the influent tank so as to project a hyperbolic sheet of influent onto such wall to mix with the fluid in the influent tank.
- 4. A system according to claim 3 where the diffuser is formed as a transformed hyperbolic section so as to decelerate fluid flow therefrom.
- 5. A system according to claim 4, wherein the diffuser is a 90.degree. elbow that diverges no more than 7.degree. in cross-sectional configuration.
- 6. A system according to claim 1, wherein each pipe has at least two flat plate orifices downstream from said point of disinfectant fluid injection at a minimum of 40 diameters separation.
- 7. A system according to claim 6, wherein said pipe bundle has a larger overall total flow area than said manifold.
- 8. A system according to claim 7, wherein said flat plate orifice diameter ranges from about 0.7 to about 0.9 of said pipe diameter in said bundle.
- 9. A system according to claim 8, wherein said injecting means is a small pipe, said pipe existing in the vena contracta of said flat plate orifice, said small pipe having a tip, said tip extending from about 0.25 to about 0.5 pipe diameters downstream from said flat plate orifice.
- 10. A system according to claim 9 wherein said small tip extends from about 0.3 to about 0.39 pipe diameters downstream of said flat plate orifice.
- 11. A system according to claim 8, wherein said point of highest momentum exchange is in the vena contracta of said flat plate orifice.
- 12. A system according to claim 11, wherein said pipe bundle is a plurality of pipes, each said pipe having a diameter smaller than said manifold.
- 13. A system according to claim 7, wherein said high momentum exchange mixing member is a 90.degree. elbow.
- 14. A system according to claim 13, wherein said injecting means is a small pipe.
- 15. A system according to claim 14, wherein said small pipe has a tip, said tip extending from about 0.25 to about 0.5 pipe diameters downstream of said flat plate orifice, and said flat plate orifice has a diameter of from about 0.7 to about 0.9 of said pipe diameter.
- 16. A system according to claim 15, wherein said small pipe tip extends from about 0.3 to about 0.39 diameters downstream from said pipe.
- 17. A system according to claim 15, including means for injecting a deoxygenation compound to said effluent well, said deoxygenation compound selected from the group consisting of sulfur dioxide and thiosulfate.
- 18. A system according to claim 1, including means for injecting a deoxygenation compound to said effluent well, said deoxygenation compound selected from the group consisting of sulfur dioxide and thiosulfate.
Parent Case Info
This is a Division of application Ser. No. 531,095, filed Dec. 9, 1974, now U.S. Pat. No. 3,998,714 which is a continuation-in-part of a copending U.S. patent application bearing Ser. No. 355,738, System for Pollution Suppression, filed Apr. 30, 1973, now U.S. Pat. No. 3,853,764, which in turn is a continuation-in-part of an earlier application Ser. No. 100,333, filed Dec. 21, 1970, now U.S. Pat. No. 3,730,881, which in turn is a continuation-in-part of Ser. No. 813,382, filed Feb. 28, 1969, now U.S. Pat. No. 3,549,528, issued Dec. 22, 1970, which in turn is a continuation-in-part of application Ser. No. 362,118, filed Apr. 23, 1964, and now abandoned.
US Referenced Citations (6)
Divisions (1)
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Number |
Date |
Country |
Parent |
531095 |
Dec 1974 |
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Continuation in Parts (4)
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Number |
Date |
Country |
Parent |
355738 |
Apr 1973 |
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Parent |
100333 |
Dec 1970 |
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Parent |
813382 |
Feb 1969 |
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Parent |
362118 |
Apr 1964 |
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