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[Methodology of the anaerobic reactor SD model's construction].

On the basis of system dynamic, we summed up 3 different patterns between variables, and put forward the theory of partitional modeling. We divided the model of anaerobic reactor into 3 blocks, and confirmed the system structural graphic. According to the character and advantage of partitional modeling, we construct the SD model of anaerobic reactor which is fed by glucose, and used a different calculation way for different blocks. Comparing with the lab data, errors between SD model, test data, and Andrews' model is less than 10%. We also analyzed the result of simplified model which removed the materialized block. It shows that result of SD model is credible; way of partitional modeling is propitious to the simplification and upgrade of model, reduction of the amount of calculation, and increase of calculation speed.