Large water reservoir management system
AssigneeSevern Trent Water Purification, Inc.
InventorBrent Simmons
Life of this patent
Estimating the term…
Abstract
A method and apparatus for controlling water impurity level and temperature uniformity within large water-containing reservoirs including a pump located in the body of water, the pump ejecting a jet of water therefrom and ingesting water at a point remote from said ejecting and an eductor positioned in the jet of water for pulling in low pressure water and flowing a stream of water therefrom providing mixing and circulation of water within the reservoir to remove temperature gradients. Water purity is controlled by a controller.
Claims18
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.
A method of circulating water within a large water-containing reservoir for purposes of providing mixing action within the reservoir to diminish temperature gradients within water contained in the reservoir and to efficiently mix chemicals added thereto for treatment purposes, wherein in a body of water provided in a reservoir, the method comprised of:
- (a) locating a pump in said body, said pump discharging a jet of water therefrom and ingesting water at a point remote from said discharging;
- (b) placing an eductor in said jet of water to pull in low pressure water adjacent said eductor;
- (c) flowing a stream of water from said eductor for increasing flow within said body of water;
- and
- (d) dispersing disinfectant chemicals in one of said jet or said stream for mixing in said body of water.
A system for adding disinfectants and for maintaining temperature uniformity within large water-containing reservoirs, the system having the ability to dispense chemically-treated water to end users, the system comprised of:
- (a) a recirculating pump for locating in a body of water in a reservoir, said pump designed to produce a jet of water therefrom in said body and to ingest water from said body at a point remote from said jet;
- (b) an eductor positioned in said jet of water, said eductor designed to draw low pressure water surrounding said eductor and to discharge a stream of water therefrom to provide further mixing and circulation of water within said reservoir and to remove temperature gradients in said body of water;
- (c) means for adding at least one of ammonia, hypochlorite, and chlorine to said body of water, said means designed to add one of said ammonia, hypochlorite, and chlorine to said stream of water discharging from said pump or said eductor;
- (d) means for removing a test stream of water from said reservoir on a continuous basis, said means designed to remove said test stream remote from said water discharging from eductor;
- (e) an analyzer for determining the level of at least one of chlorine and chloroamine in said test stream to provide a chlorine or chloroamine related signal;
- and
- (f) a controller designed to receive said signal and to compare said signal to a set point indicative of the level of chlorine or chloroamine desired in said reservoir water to provide a comparison, and in response to said comparison, said controller designed to maintain, increase, or decrease the amount of ammonia, hypochlorite, or chlorine added to said body of water in said reservoir.
A system for adding disinfectants to a body of water to control water purity and for controlling water temperature uniformity within large water-containing reservoirs, the system having the ability to dispense chemically-treated water, the system comprised of:
- (a) a pump for locating generally vertically in a body of water in a reservoir, said pump designed to pump a jet of water upwardly therefrom in said body and to ingest water from said body at a point remote from said jet;
- (b) an eductor for positioning in said jet of water, said eductor designed to draw low pressure water surrounding said eductor and to discharge a stream of water therefrom to provide further mixing and circulation of water within said reservoir and to remove temperature gradients in said body of water;
- (c) means for adding at least one of ammonia, hypochlorite, or chlorine to said body of water, said means designed to add one of said ammonia, hypochlorite, and chlorine to said water discharging from said pump or said eductor, said pump designed to pump a test stream of water from said reservoir on a continuous basis;
- (d) an analyzer for receiving said test stream of water for determining the level of at least one of chlorine and chloroamine in said test stream to provide a chlorine or chloroamine related signal;
- and
- (e) a controller designed to receive said signal and to compare said signal to a set point indicative of the level of chlorine or chloroamine desired in said reservoir water to provide a comparison, and in response to said comparison, said controller designed to maintain, increase, or decrease the amount of ammonia, hypochlorite, or chlorine-containing material added to said body of water in said reservoir.
A system designed for circulating water in a body of water contained in a reservoir for purposes of providing mixing action within the reservoir to diminish temperature gradients within water contained in the reservoir, the system comprised of:
- (a) a pump located in said body, said pump designed for discharging a jet of water of water therefrom and for ingesting water at a point remote from said discharging;
- (b) an eductor position in said jet of water to pull in low pressure water adjacent said eductor and to flow a stream of water therefrom for increasing flow within said body of water;
- and
- (c) means for dispersing disinfectant chemicals in said jet or said stream for mixing in said body of water.
Dependencies are inferred from the claim text.