Modeling the anaerobic digestion of autohydrolysis-pretreated secondary sludge: first-order and ADM1 comparison
نویسنده
چکیده
First-order and ADM1 modeling approaches were compared to evaluate the effects of a novel pretreatment technique, autohydrolysis, in the anaerobic digestion of waste activated sludge (WAS). Hydrolysis constant rates were calibrated using data from biochemical methane potential (BMP) tests and validated using data from continuous digesters fed with raw and pretreated WAS. Results indicated that the ADM1 is more suitable for predicting the effect of the pretreatment than a first-order approach. The ADM1 was also capable of successfully representing slowlybiodegradable organics consumption and limiting step changes promoted by the pretreatment.
منابع مشابه
ADM1 calibration using BMP tests for modeling the effect of autohydrolysis pretreatment on the performance of continuous sludge digesters.
Improving anaerobic digestion of sewage sludge through pretreatment techniques is a suitable solution for better sludge management. In this sense, modeling may present itself as an important tool to assess and predict process performance and pretreatment effects. In this study, the feasibility of using biochemical methane potential (BMP) tests data for calibrating the Anaerobic Digestion Model ...
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