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US 2013/0153512 A1Published application
Treatment of surfactant laden wastewater
AssigneeGeneral Electric Company
InventorsStephen Robert Vasconcellos, Matthew D. Mersch, James Quentin Pollett
Life of this patent
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Abstract
Clarification of surfactant laden wastewaters of the type commonly encountered in the laundry, dishwashing, textile manufacturing, and metal cleaning and degreasing processes is provided by use of a chitosan/(meth)acrylyloxy alkyl quaternary ammonium salt graft polymer.
Claims9
A method of reducing the COD of an aqueous medium containing a COD level of >200 ppm based upon 1 million parts of said aqueous medium, said method comprising adding to said aqueous medium an effective amount of a chitosan/(meth)acrylyloxy alkyl quaternary ammonium salt graft polymer (C/MAOA Quat).
Dependencies are inferred from the claim text.