introduction: treatment of wastewater due to product and consumption of material cleaning with special physicochemical characteristics is difficult, and therefore can cause significant environmental problems such as eutrification, toxicity, algae bloom and etc.to stop these consequences, assessing the quality characteristics of this wastewaters is necessary. to investigate about the appropriate...

Background & Aims of the Study: The most important compounds in hospital wastewater are antibiotics, disinfectants, anesthetics, radioactive elements, static cytotoxic agents, other chemicals and hazardous materials that caused to be different domestic sewage. The purpose of this study was the evaluation of performance of extended aeration biological system in pollutants remova...