Patent ID: 6811705
Filing Date: 2004-11-02
Classification: C02F

Abstract:
A method for treating wastewater comprising the steps of:a) providing a treatment system comprising: a solids separation tank; an oxidation tank comprising a plurality of chambers including an inlet chamber operatively connected to said solids separation tank and an outlet chamber from which liquid exits from said oxidation tank; and, a liquid flow circuit whereby liquid flows from said solids separation tank into said oxidation tank, out of said oxidation tank and is reintroduced into said solids separation tank and said oxidation tank; b) dissolving a gas comprising ozone into said liquid in said liquid flow circuit after said liquid exits from said oxidation tank; c) introducing wastewater to be treated into said solids separation tank; d) separating solids from liquid in said wastewater in said solids separation tank; e) allowing said liquid from said solids separation tank to pass into said oxidation tank; f) introducing said liquid with dissolved gas comprising ozone into said liquid in said oxidation tank and allowing said gas comprising ozone to form bubbles in said liquid in said oxidation tank and cause oxidation of substances in said liquid in said oxidation tank; g) introducing said dissolved gas comprising ozone into each of said chambers and allowing said liquid to flow from said inlet chamber, through any intermediate chambers and into said outlet chamber; and, h) removing treated liquid from said treatment system for discharge to the environment.