THE TERTIARY TREATMENT STAGE OF WASTEWATER

Abstract

At present many of the substances discharged into the wastewater sewerage are not eliminated by classical methods (mechanical and biological) of sewage treatment plants. The presence of these substance (especially compounds of nitrogen and phosphorus) in the treated sewage water has a significant impact on the environment and on human health. The treatment of drinking water taken from the respective emissaries water require additional costs. The removal process of resistant substances can physical, physicochemical or biological methods. Each of the processes are the tertiary treatment stage, that could complement current wastewater treatment plants technology.