Development of Energy Saving Framework for Aeration Tank in Sewage Treatment Plant (STP)

Abstract

As the high power consumption in sewage treatment plant operations especially in extended aeration sewage treatment plant (STP) is a burden for the sewage treatment plant operator to sustain its operations cost. The energy cost substituting about 30% of overall STP operations cost. Oxygenation of aeration tank is the highest energy consuming unit process in the extended aeration (EA) STP. It is vital to develop an energy saving framework to reduce the energy cost in operating EA plants. The main aim from this research study is to investigate the key parameter that contribute to energy consumption in extended aeration STP. This study discussed design and actual plant condition aspects in developing the energy saving framework. Then to validate the framework at other similar plants for the benefits of other plants.