Method and apparatus for water treatment
AssigneeBurnett Lime Company, Inc.
InventorsDallas H. Burnett, C. Hugh Burnett, Wade L. Burnett, Tom M. Burnett
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Abstract
A method and apparatus for the treatment of water and, more particularly, to the mineralization of water in order to improve pH, hardness, turbidity, and/or alkalinity is described. More particularly, a system is provided for the treatment of water that needs additional hardness, alkalinity, and/or pH adjustment while also meeting turbidity requirements. The use of sodium hydroxide and other methods for avoiding turbidity problems can be eliminated and/or minimized.
Claims28
A method for treating water, comprising:
- adding carbonic acid into the water;
- allowing at least part of the carbonic acid to lower the pH of the water;
- adding calcium hydroxide to the water after said allowing at least part of the carbonic acid to lower the pH of the water;
- and
- decreasing the turbidity of the water by further dissolving at least calcium hydroxide from said adding, said decreasing comprising
- applying mechanical agitation by positioning at least one impeller within a flow path of the water at a location along the flow path that is after said adding calcium hydroxide, and rotating the at least one impeller with a speed of rotation sufficient to decrease the turbidity of the water.
A method for treating water, comprising:
- adding carbonic acid into the water;
- allowing at least part of the carbonic acid to lower the pH of the water;
- adding calcium hydroxide to the water after said allowing at least part of the carbonic acid to lower the pH of the water;
- and
- decreasing the turbidity of the water by further dissolving at least calcium hydroxide from said adding, said decreasing comprising applying mechanical agitation by moving a device through the water and calcium hydroxide, or moving the water and calcium hydroxide through the device, so as to shear the water at a rate sufficient to lower the turbidity.
A method for water treatment, comprising the steps of:
- lowering the pH of the water;
- increasing the pH, hardness, alkalinity, and turbidity of the water after said step of lowering the pH by adding calcium hydroxide to the water;
- and
- decreasing the turbidity of the water after said step of increasing, said step of decreasing comprising mechanical agitation of the water with a device that is rotated or moved relative to the water and calcium hydroxide so as to shear the water at a rate sufficient to lower the turbidity, said decreasing step occurring without significantly affecting the pH, hardness, or alkalinity of the water.
Dependencies are inferred from the claim text.