Sensitivity analyses of an activated sludge model for a wastewater treatment plant

The purpose of this paper is to ease the use of a wastewater treatment plant, by means of sensitivity analyses, SA. Two scenarios are considered: the first one is model calibration and parameter estimation prioritization, and the second one is inputs ranking. For the first case, all the process parameters represent inputs for sensitivity analyses. The innovative part of the paper is the way we analyze the sensitivity indices in time, while varying one of the process actual inputs. For the second set, the analyses should show which input has a greater influence on the outputs for both importance of filters and control design of multiple inputs and multiple outputs. The plant is modeled using a simplified activated sludge model adapted for the particular case of the wastewater treatment plant from Talmaciu, Sibiu.