Evaluation of the quality of the sewage and waste selected hospitals of Rasht and Tehran

Abstract

Introduction and objectives: Hospital wastewaters are loaded with pathogenic micro- organisms, laboratories and pharmaceutical remaining, pharmacy part of metabolized, radioactive elements and other toxic chemical Products, so for wastewater treatment and excretion conditions of have particular importance, Aim of this study is Evaluation of the quality of the sewage and waste selected hospitals of Rasht and Tehran. Materials and method: Cross-sectional method was performed in 2014. In addition to the 3 several part of specialized hospitals were chosen. In order to confirmed of hospitals wastewaters, composite sampling were conducted from waste and waste points of selection hospitals wastewater plant to assessment from Chemical Oxygen Demand(COD), Biochemical Oxygen Demand (BOD5), Total Suspended Solid (TSS), Electrical conductivity (EC), pH, Phosphate (PO4), Fical coliform (Fecal coli), Total Coliform (T. Coli) and Total Detergents (ABS). Results: The results showed that examined indicators in waste of total hospitals have decrease after that influent, TSS, PO4, pH, ABS, T.Coli. and Fecal Coliform at all hospitals were less than standard level. BOD and COD value was exceeded the standard restriction alone in waste of Rasol Akram hospital in Rasht, Iran, While the electrical conductivity were measured higher than standard level in the 22 Aban and Rasol Akram hospitals. Conclusion: Studied hospitals is in suitable circumstances if the aeration system action in standard level.