Method for the removal of submicron particulates from chlorinated water by sequentially adding a cationic polymer followed by adding an anionic polymer
AssigneeHalosource, Inc.
InventorsEverett J. Nichols, Jeffrey F. Williams, James R. Scott, Christine M. Palczewski
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Abstract
A method for removing submicron colloidal particulates, such as hydrocarbons, from water. The method includes first adding a soluble, cationic polymer, such as chitosan, a salt, or solution of chitosan to water containing the submicron particulates and a halogenating agent, followed by adding a soluble, anionic polymer or anionic salt to the water. The resulting flocs are filtered to remove the submicron particulates.
Claims30
A method for removing submicron particulates from water containing a halogenating agent, comprising:
- (a) adding chitosan to water comprising submicron particulates and a halogenating agent to provide chitosan-treated water;
- (b) adding a soluble, anionic polymer comprising alginate to the chitosan-treated water to provide polymer-treated water;
- (c) allowing flocs comprising submicron particulates to form in the polymer-treated water;
- and
- (d) filtering the flocs to remove the submicron particulates from the water.
A method for clarifying water, comprising:
- to water containing about 2 ppm to about 20 ppm by weight of a halogenating agent and submicron particulates, adding chitosan to reach a concentration in the water of about 5 ppb to about 100 ppm by weight;
- followed by adding to the water, a soluble, anionic polymer comprising alginate to reach a concentration in the water of about 5 ppb to about 100 ppm by weight;
- and
- filtering the water to remove flocs comprising submicron particulates, to clarify said water.
A method for clarifying water, comprising:
- to water containing about 2 ppm to about 20 ppm by weight of a halogenating agent and submicron particulates, adding a soluble, cationic polymer comprising chitosan to reach a concentration in the water of about 5 ppb to about 100 ppm by weight;
- followed by adding to the water, a soluble, anionic polymer or anionic salt comprising alginate to reach a concentration in the water of about 5 ppb to about 100 ppm by weight;
- and
- filtering the water to remove flocs comprising submicron particulates, to clarify said water.
A method for removing submicron particulates from water, comprising:
- adding a soluble, cationic polymer comprising chitosan to water containing a halogenating agent and submicron particulates;
- allowing dispersal of the soluble, cationic polymer to occur in the water;
- followed by adding a soluble, anionic polymer or anionic polymer salt comprising alginate to the water;
- and
- filtering the water to remove flocs comprising submicron particulates.
A method for clarifying water in a swimming pool, comprising:
- adding a soluble, cationic polymer comprising chitosan to water containing submicron particulates in a swimming pool;
- allowing the soluble, cationic polymer to disperse throughout the water in the swimming pool;
- followed by adding a soluble, anionic polymer or anionic salt comprising alginate to the water in the swimming pool;
- and
- filtering the water of the swimming pool to remove the flocs comprising submicron particulates formed from the cationic polymer and the anionic polymer, to clarify said water.
Dependencies are inferred from the claim text.