Method for controlling odor and taste producing metabolites in water systems through use of primary and secondary oxidation processes
A method of oxidizing a component of an aqueous medium is provided. The method includes adding an effective amount of an oxidizing composition to the aqueous medium. The oxidizing composition includes an ingredient, such as hydrogen peroxide, a percarbonate salt, a peroxy compound, a chlorite or alkali metal salt thereof, a chlorate or alkali metal salt thereof, or any combination thereof. The method also includes oxidizing the component. The component may be a metal, a mineral, a microbial metabolite, an organic molecule, or combination thereof. The method also includes modulating the application of the oxidizing composition based on a measured aqueous medium parameter.
1. A method of oxidizing a component of an aqueous medium, comprising:
adding a first composition to the aqueous medium, wherein the first composition is an oxidizing composition comprising hydrogen peroxide, and a chlorate or alkali metal salt thereof,
adding a second composition comprising chlorine dioxide to the aqueous medium, and
oxidizing the component, wherein the component is a microbial metabolite.
2. The method of claim 1 , wherein the oxidizing composition is added to the aqueous medium at a concentration of from about 0.1 ppm to about 1000 ppm.
3. The method of claim 1 , wherein the chlorate is sodium chlorate.
4. The method of claim 1 , wherein the component further comprises a metal, and the metal is selected from the group consisting of iron, manganese, copper, and any combination thereof.
5. The method of claim 1 , wherein the microbial metabolite is geosmin, methylisoborneol (MIB), microcystin, cyanotoxins, or any combination thereof.
6. The method of claim 1 , wherein the chlorine dioxide is added to the aqueous medium at a concentration of about 0.02 ppm to about 20 ppm.
7. The method of claim 6 , wherein the chlorine dioxide is added to the aqueous system before, after, and/or concurrently with the oxidizing composition.
8. The method of claim 6 , wherein the chlorine dioxide is added continuously or intermittently to the aqueous medium.
9. The method of claim 1 , further comprising exposing the aqueous medium to ultraviolet light.
10. The method of claim 1 , wherein the oxidizing composition is added continuously or intermittently to the aqueous medium.
11. The method of claim 1 , further comprising measuring a concentration of one or more ingredients of the oxidizing composition in the aqueous medium.
12. The method of claim 11 , further comprising adjusting a concentration of the oxidizing composition being added to the aqueous medium based on the measured concentration.
13. The method of claim 1 , further comprising measuring a concentration of one or more of the components in the aqueous medium.
14. The method of claim 13 , further comprising adjusting a concentration of the oxidizing composition being added to the aqueous medium based on the measured concentration.
15. The method of claim 1 , further comprising measuring a property of the aqueous medium, wherein the property is selected from the group consisting of pH, temperature, turbidity, ion concentration, microbial load, suspended solids, total dissolved solids, oxidation reduction potential (ORP), conductivity, and any combination thereof.
16. The method of claim 1 , wherein the oxidizing composition is a liquid.
17. The method of claim 1 , wherein the oxidizing composition has substantially no biocidal effect at a use concentration.
18. The method of claim 1 , wherein the aqueous medium is municipal water, waste water, recirculating water, industrial process water, food and beverage ingredient water, influent stream from a river, influent stream from a lake, or any combination thereof.
19. The method of claim 1 , wherein the component further comprises a metal, mineral, organic molecules, or any combination thereof.
20. A method of oxidizing a component of an aqueous medium, comprising:
adding a first composition to the aqueous medium, wherein the first composition is an oxidizing composition consisting of hydrogen peroxide, a chlorate or alkali metal salt thereof, and water,
adding a second composition comprising chlorine dioxide to the aqueous medium, and
oxidizing the component, wherein the component is a microbial metabolite.