Investigation of coliform bacteria removal efficiency in the urban wastewater treatment plant of the city of Sakarya

The aim of this study was to investigate the the removal efficiency of coliform bacteria which are not found in "Regulation on Urban Wastewater Treatment " but causes diseases as cholera and typhoid if given to the receiving environment, from treatment plant in Sakarya. Wastewater samples were taken periodically from the raw wastewater influent, physical treatment wastewater effluent, and plant wastewater discharge points of Urban Wastewater Treatment Plant. BOD (Biochemical Oxygen Demand), COD (Chemical Oxygen Demand), SS (Suspended Solids), pH physical and chemical parameters and coliform and FC analyses were conducted on the wastewater. Also, eukaryotic microorganisms in the active sludge were determined. A most probable number (MPN) method was studied for determination of coliforms. Effects of physical and chemical parameters and eukaryotic microorganisms on coliform and FC removal were statistically investigated.