NUMERICAL SIMULATIONS OF WASTEWATER TREATMENT AERATION PROCESSES

摘要

In this paper, the authors present the need to modernize the aeration equipments used in biological reactors of wastewater treatment plant (WWTP). The basic requirements for the correct operation of the biological reactor are to provide enough oxygen for the biochemical degradation of the organic matter and maintaining the state of activated sludge suspension flocs. The oxygen mass transfer from air to water is essential in biological processes due to high energy consumption of the aeration equipments. In the present paper the authors present a comparative study over the aeration processes in the biological reactors before and after refurbishment of Targoviste City WWTP in order to highlight the necessity to use modern and high-performance equipments for the wastewater treatment.