Chemical Injection and Control System and Method for Controlling Chloramines
First Claim
1. A method of automatically controlling chloramine concentration in a body of water contained in a reservoir, the method comprising:
- a) determining residual chloramine concentration in a first water sample obtained from the body of water;
b) automatically engaging a supply of chlorine to add chlorine to the body of water when;
i) the residual chloramine concentration in the first water sample is determined to be below a pre-determined residual chloramine concentration set-point;
orii) the residual chloramine concentration in the first water sample is determined to be below a first chloramine concentration percentage of a pre-determined residual chloramine concentration set-point;
c) determining residual chloramine concentration in a second water sample obtained from the body of water after step b); and
d) automatically engaging a supply of ammonia and the supply of chlorine to add both ammonia and chlorine to the body of water if;
i) the residual chloramine concentration in the second water sample is determined to be below the residual chloramine concentration in the first water sample;
orii) the residual chloramine concentration in the second water sample is determined to be below a second chloramine concentration percentage of the pre-determined residual chloramine concentration set-point.
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Accused Products
Abstract
A method of automatically controlling chloramine concentration in a body of water contained in a reservoir includes: (a) determining residual chloramine concentration in a first water sample obtained from the body of water; (b) automatically engaging a supply of chlorine to add chlorine to the body of water when the residual chloramine concentration in the first water sample is determined to be below a residual chloramine concentration set-point or a first chloramine concentration percentage; (c) determining residual chloramine concentration in a second water sample obtained from the body of water after step (b); and (d) automatically engaging a supply of ammonia and the supply of chlorine to add both ammonia and chlorine to the body of water if the residual chloramine concentration in the second water sample is determined to be below the residual chloramine concentration in the first water sample or a second chloramine concentration percentage.
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Citations
23 Claims
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1. A method of automatically controlling chloramine concentration in a body of water contained in a reservoir, the method comprising:
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a) determining residual chloramine concentration in a first water sample obtained from the body of water; b) automatically engaging a supply of chlorine to add chlorine to the body of water when; i) the residual chloramine concentration in the first water sample is determined to be below a pre-determined residual chloramine concentration set-point;
orii) the residual chloramine concentration in the first water sample is determined to be below a first chloramine concentration percentage of a pre-determined residual chloramine concentration set-point; c) determining residual chloramine concentration in a second water sample obtained from the body of water after step b); and d) automatically engaging a supply of ammonia and the supply of chlorine to add both ammonia and chlorine to the body of water if; i) the residual chloramine concentration in the second water sample is determined to be below the residual chloramine concentration in the first water sample;
orii) the residual chloramine concentration in the second water sample is determined to be below a second chloramine concentration percentage of the pre-determined residual chloramine concentration set-point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A treatment delivery system for automatically controlling chloramine concentration in a body of water contained in a reservoir comprising:
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a chemical dosing assembly at least partially submerged in the body of water; a water sampling assembly configured to extract at least a first and second water sample from the body of water at different points in time; an analyzer in fluid communication with the water sampling assembly and configured to determine residual chloramine concentration in the first and second water samples; a controller in operable communication with the analyzer; and one or more computer-readable storage mediums in operable communication with the controller and containing programming instructions that, when executed, cause the controller to; a) determine whether the residual chloramine concentration in the first water sample obtained from the body of water is below a pre-determined residual chloramine concentration set-point or below a first chloramine concentration percentage of a pre-determined residual chloramine concentration set-point; b) engage the chemical dosing assembly to add chlorine to the body of water when; i) the residual chloramine concentration in the first water sample is determined to be below the pre-determined residual chloramine concentration set-point;
orii) the residual chloramine concentration in the first water sample is determined to be below the first chloramine concentration percentage of the pre-determined residual chloramine concentration set-point; c) determine whether the residual chloramine concentration in the second water sample obtained from the body of water after step b) is below the residual chloramine concentration in the first water sample or below a second chloramine concentration percentage of the pre-determined residual chloramine concentration set-point; and d) engage a supply of chlorine and a supply of ammonia to add both ammonia and chlorine to the body of water if; i) the residual chloramine concentration in the second water sample is determined to be below the residual chloramine concentration in the first water sample;
orii) the residual chloramine concentration in the second water sample is determined to be below the second chloramine concentration percentage of the pre-determined residual chloramine concentration set-point. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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Specification