Patent ID: 6875355
Filing Date: 2005-04-05
Classification: C02F

Abstract:
1. A method for denitrification of nitrified wastewater or nitrified water comprising the steps of: providing a series of interconnected tanks, each tank having an inlet, an outlet, and a conduit connecting said outlet of a preceding tank to said inlet of a succeeding tank; providing to an inlet of a mixing tank of said series of interconnected tanks, said nitrified wastewater or nitrified water having nitrates and nitrites; mixing a detergent with said wastewater or said nitrified water in said mixing tank to enhance the reduction of said nitrates and nitrites to gaseous nitrous oxide (N controlling the amount of detergent introduced into said mixing tank in accordance with the flow volume of said nitrified water entering said mixing tank; and feeding effluent from said mixing tank to at least one detention tank in said series of interconnected tanks for establishing a detention period of said effluent.