Abstract: “This study concerns the upgrading of a real domestic wastewater treatment plant (WWTP) supported by simulation. The main aims of this work are to: (1) Improve wastewater treatment plant performance Using integrated fixed film activated sludge IFAS), and (2) perform a cost estimation analysis for proposed solution.The modelused was calibrated based on data from the existing WWTP, namely,Eastern plant and located in Alexandria, Egypt. The activated sludge model No. 1 (ASM1) was considered in the model analysis by GPS-X 7 software. Steady-state analysis revealed that high performances corresponded to high compliance with Egyptian standards were achieved by IFAS technique.”

Keywords: Activated sludge process; Integrated Fixed Film Activated Sludge; nutrient removal; wastewater treatment plant upgrading.