Potable water delivery system with disinfection and residual...

Liquid purification or separation – Processes – Including controlling process in response to a sensed condition

Reexamination Certificate

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C210S753000, C210S764000, C210S097000, C210S202000, C210S206000, C210S418000

Reexamination Certificate

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10972988

ABSTRACT:
A water disinfection delivery treatment system first filters the supply by a particle and then a carbon filter. The partially treated flow is split in two and a first part passes through a first cutoff valve and is fed into a disinfection (iodine) chamber, filter or feeder via a flow restricter. The chamber output passes through a second solenoid driven cutoff valve. The second part is fed to a third cutoff valve and this valve's output is summed with the second valve's output and then fed into a holding tank. The tank retain's a volume such that the water remains therein for at least a period sufficient to permit a minimum 3 log reduction of pathogenic microbes. A final carbon filter is downstream of the tank as is a meter and dispenser. A method is also provided for delivering potable drinking water.

REFERENCES:
patent: 4555347 (1985-11-01), O'Dowd et al.
patent: 5792371 (1998-08-01), Harvey et al.
patent: 5919374 (1999-07-01), Harvey et al.
Disinfection, Sterilization, and Preservation, 2ndEdition, Edited by Seymour S. Block (pp. 208-213), Lea & Febiger, 1977, Philadelphia.

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