Abstract
Abstract : In this study, the process of a Sewage Treatment Plant (STP) in Marvdasht City, Iran, was reviewed to determine the efficiency of the two aerated lagoons each with 9 aerators. Major emphasize in this paper is on trying to address the parameters and treatment process in combination and eventually suggesting a more sustainable energy consumption in the STP. The focus of this study was to calculate the required oxygen with respect to BOD5, loading rate and other parameters. This allowed the determination of the aerator pump power ratings required to supply the oxygen was high and were found that by almost half of the present power consumption, the required oxygen level could still be achieved. To eliminate the adverse impact high energy consumption, the current and future decision-making in wastewater treatment should consider sustainability.