Method for fryer stack recovery and treatment
AssigneeFrito-Lay North America, Inc.
InventorsAshish Anand, Siva Kumar Kota, Rravindar Verma
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Abstract
A method for reducing the amount of acrylamide in recovered water from a fryer stack. This invention provides a method to treat acrylamide in the waste water/process water. Organic compounds such as phenols, acrylamide and phenolic compounds can be oxidized in the presence of oxidizing compounds like hypo and Fenton reagent. Fenton reagent is a product of reaction of Iron Salts (like Ferrous Sulphate-FeSO4) and Hydrogen Peroxide (H2O2). It generates OH* (radical) which has significantly more oxidation power compared to traditional oxidizing agents such as Chlorine. The fryer stack water is collected and treated using Fenton reagent such that the Acrylamide levels are reduced to less than 0.1 ppb in the recovered water.
Claims19
A method for recovering and treating waste water from a unit operation in a manufacturing process of a food product, said method comprising the steps of:
- a) recovering waste water from the unit operation;
- b) removing oil and grease from the waste water;
- c) enabling a reaction between the waste water from step b) and a Fenton reagent and generating treated water, wherein the reaction comprises reacting the Fenton reagent with acrylamide in the wastewater from step b);
- and
- d) filtering the treated water after the reaction to provide filtered water.
Dependencies are inferred from the claim text.