Patent ID: 9150432
Filing Date: 2015-10-06
Classification: C02F

Abstract:
1. A method of treating wastewater having pathogenic microorganisms therein and generally reducing the concentration of pathogenic microorganisms in the wastewater, the method comprising: sensing one or more qualities of the wastewater; utilizing the one or more qualities to determine the ozone demand of the wastewater; dosing the wastewater with ozone, wherein the dose is less than the ozone demand such that the dosing is generally maintained between 0.05 and 0.5 milligrams of ozone per milligram of COD; mixing the ozone with the wastewater with a static mixer and oxidizing the wastewater with the ozone thereby providing a wastewater that is substantially free of residual ozone; after oxidizing the wastewater with ozone, disinfecting the wastewater by subjecting the wastewater to UV radiation with a wavelength between approximately 185 and approximately 350 nm; and wherein by oxidizing the wastewater with ozone and disinfecting the wastewater with UV radiation, the concentration of pathogenic microorganisms in the wastewater is reduced.