Waste water characteristics Ankara ASKI treatment facility and evaluation of treatment system

Hazardous materials in wastewaters deplete the dissolved oxygen in receivingbodies and effects negatively the ecological balance. Quality of surface waterspolluted by wastewater discharges are decreasing day by day and they arebecoming ineffective to serve for several purposes.In this study, settlement areas in Ankara were taken into consideration andeffect of ASKI wastewater to the pollution level of Ankara creek, which is thereceiving body ASKI wastewater treatment facility. Wastewater characteristicsand wastewater treatment system were also evaluated. Provincial wastewaterdata were gathered, wastewater output of facility were evaluated based onTurkish and European standards, alternative treatment systems were designedand economical analysis were carried out. Also current conditions of treatmentfacilities in Turkey and around the world, utilized treatment technologies andcurrent problems were discussed.Currently, Ankara wastewater treatment facility is operated as aerated classicalactive mulch process. As a result of the evaluations, classical active mulchprocess was selected as the proper system; however, since the aerators are usedin aeration, initial investment cost is higher and monthly operation cost is 4,9times higher than the system with diffusers.There is not a special unit in the facility to nitrogen and phosphorus removal.Nitrification-denitrification processes should be added to the system both toprevent the receiving bodies from pollution and otrification and to comply withthe European standards.Science Code : 912Key words : ASKI waste water treatment facility, alternative treatmentsystems, economical analysisPage Number : 114Adviser : Prof. Dr. Belgin ÇAKMAK