E-Andrew Sindt Creative Component S11.pdf

Figure 3.5 - BioWin SBR operation input screen for BNR-S1 mode (EnviroSim, 2010)3.5 Sensitivity AnalysisA sensitivity analysis was completed using the regular and BNR-S1 mode SBR setups. A sensitivityanalysis is a useful tool for modelers because it reveals the parameters that have the largest effect on agiven unit process or effluent characteristic. A full list of parameters evaluated is given in Table 3.5.More information on each parameter is provided in Appendix IV. The sensitivity analysis was carried outby varying one simulator parameter, running the simulation, and then comparing the results of effluentparameters to BioWin default values. Percent deviation was calculated for each effluent parameter in agiven simulation run (see equation 5). Effluent parameters evaluated include TSS, pH, total nitrogen,ammonia, nitrite, nitrate, total phosphorus, and filtered COD (soluble COD). These particular effluentparameters were chosen based on the availability of observed data from Ersu et al., (2008).Where: a = value of effluent parameter for simulation run with a single simulator parameteradjusted= simulator parameter= percent adjustment to simulator parameter (± 20, 40, 60%)b = simulation run with BioWin default values[5]36