Patent ID: 6811710
Filing Date: 2004-11-02
Classification: C02F,F17C

Abstract:
A method for adding disinfectants and maintaining temperature uniformity within large water-containing reservoirs, the method having the ability to deliver chemically-treated water from said reservoir to the end user, the method comprising:(a) providing a reservoir having a body of water therein; (b) locating a pump in said body of water, said pump ejecting a jet of water therefrom and ingesting water at a point remote from said ejecting; (c) placing an eductor in said jet of water, pulling in low pressure water to said eductor and flowing a stream of water therefrom providing mixing and circulation of water within said reservoir for removing temperature gradient in said body; (d) adding one of ammonia and a chlorine containing material to said body of water, said ammonia or chlorine containing material being added to water flowing from said pump or eductor; (e) simultaneously with said mixing, removing a test stream of water from said reservoir on a continuous basis; (f) determining the level of at least one of chlorine and chloroamine in said test stream to provide a chlorine or chloroamine measurement related signal; (g) relaying said signal to a controller; (h) in said controller, comparing said signal to a set point indicative of the level of chlorine or chloroamine desired in said water in said reservoir to provide a comparison; and (i) in response to said comparison, maintaining, increasing or decreasing the amount of ammonia or chlorine containing material being added to said reservoir.