ABSTRACT
Attached growth wastewater treatment processes have long been recognized as more energy efficient than suspended growth processes. The rotating biological contactor (RBC) attached growth process has been promoted as being nearly twice as efficient as the most common suspended growth process – activated sludge process (ASP).This paper presents field data from MNIT, Jaipur wastewater treatment plant, with the exception of the secondary treatment process, which in one case is ASP and the other isRBC. The results of this study show RBC process is an approximately 30% more energy efficient process than ASP and In addition, the labor requirements of the RBC facilities were found to be significantly less than for ASP, primarily because of the need for additional process monitoring and management for the ASP process.
