Method and plant for the treatment of wastewater with a view to eliminating the adverse endocrine effect and/or the toxic or genotoxic effect thereof

摘要

The instant application describes methods of treating wastewater containing pathogenic microorganisms to reduce the concentration of those pathogenic microorganisms. The methods include measuring parameters or qualities of the wastewater, and using those parameters or qualities to determine the wastewater's ozone demand. The wastewater is dosed with ozone, with the dosage being less than the ozone demand. The ozone and wastewater are mixed with a static mixer, and the wastewater is oxidized by the ozone. Thereafter, the wastewater is disinfected via ultraviolet radiation treatment. The instant application further relates to a wastewater treatment system. The system includes an ozone reactor with a static mixer, an ozone supply device, at least one sensor, and an ultraviolet radiation disinfection unit. The ultraviolet radiation disinfection unit is located downstream from the ozone reactor.

主权项

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.