Modeling of Anaerobic Digestion (AD) can provide significant benefits in the design, operation, and optimization of the digestion performance. However, AD model inputs are relatively complex and may require a wide array of components which are, most of time, not measured in wastewater
treatment facilities. The result of this study highlights whole-plant simulation and the components that have significant impact on AD modeling. Influent wastewater characteristics and operational parameters have shown to be the most important elements of AD modeling. Sensitivity analysis
also indicated that the hydrolysis rate has a major effect on the model predictions and may need to be modified to predict plant performance. Biogas production and volatile solids reduction (VSR) predictions are also highly affected by the quality of the input data. An integrated AD model
can be utilized as a tool to simulate various scenarios to design a new digestion system and/or upgrade an existing one.
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