Abstract
Abstract The parameters of anaerobic digestion include not only those of anaerobic biological reaction, but also those of the related operational‐physical characteristics, such as dispersion, diffusion, cell accumulation and transportation. In this paper, we conduct a laboratory experiment to find out the relationship between design‐operation parameters with dispersion, and combine this information with physical characteristics to set up the “dispersion model”. Then, we analyze the feasibility of a dispersion model in anaerobic filter digester simulation. At low loading rate and without recirculation, the digester behaves like a plug flow reactor. Therefore, the simulated results of dispersion and plug flow model are similar. However, at high loading rates where the dispersion of the digester increases, the simulated results of the dispersion model are closer to the experimental data than the results of the plug flow model. Comparing the simulated results with Young & McCarty's experimental data, it was f...
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