Since the focus of this paper is limited to study the effect of diffuser
scenarios in actual process use, it does not attempt to identify
solutions having the highest or most cost-effective potential for
reducing energy consumption and greenhouse gas emissions in
WWTPs. This would require a systematic approach on the technical
solutions and energy use during each treatment phase including
process dimensioning and control options. In addition, the energy
efficiency of the waste water treatment process should be evaluated
considering the distribution of air and the aeration efficiency
in the aeration tanks taking into account whether the compressed
air system is delivering air to other process stages