Akademik Veri Yönetim Sistemi
FRESENIUS ENVIRONMENTAL BULLETIN, cilt.13, sa.11B, ss.1225-1231, 2004 (SCI-Expanded)
The treated wastewater of Antalya City is discharged to the Mediterranean Sea by a rather long and deep sea outfall system. The monitored degrees of vertical density stratification at the discharge point showed considerable temporal variations. As a result, the discharged wastewater is expected to submerge at different depths below the water surface. A recent study has been carried out to compute the levels of the discharged effluent dilutions due to bacterial inactivation around the sea outfall. The bacterial inactivation rate, T-90, and the sea current speeds and directions are the most important parameters for the computations. T-90 is a highly variable parameter, which requires a careful consideration for different environmental and effluent discharge conditions. According to the Turkish standards, the value of T-90 at the sea surface ranges from 1.5 to 5.0 hours depending on the seasons of the year. However, it is rather difficult to estimate the value of T-90 below the surface for submerged wastewater. A practical equation, derived from Beer's law of light extinction, has been adopted to estimate T-90 for submerged wastewater. The resultant levels of the discharged effluent dilutions due to bacterial inactivation, shown in the form of contour lines, exhibit high spatial and temporal variations.