Optimization of Effluent Phosphorus Control for Al-Aziziah (Wasit) Wastewater Treatment Plant

Abstract

The combination between the enhance biological phosphorus removal EBPR process and chemical phosphorous precipitation process removal from wastewater to avoid the instability of the biological phosphorus removal process due to temperature variation has been simulated and optimized by implementing three different strategies in the GPS-X 5.0 modeling and simulation software (Hydro mantis). The results were demonstrated that the annual consumption of alum for the three different phosphorus control strategies (side stream line dosing only, wastewater line dosing only and dosing at both wastewater and side stream lines) were 290, 80 and 68 tons Alum/year respectively. Therefore, the implement of both wastewater and side stream lines dosing strategy show a better phosphorus removal choice in terms of effluent quality and amount of alum used.