Reactor Simulation for an Up-flow Anaerobic Sludge Blanket Process

摘要

A pilot scale UASB reactor was simulated by the dispersed plug flow model with Monod kinetic parameters for the hypothetical influent composition for the three VFA components. As a result, the COD removal efficiency for the propionic acid is smallest because its decomposition rate is quite slow compared with other substrate components; their COD removal efficiencies are in order as, acetic acid: 0.765 > butyric acid: 0.705 > propionic acid: 0.138. And the estimated value of the total COD removal efficiency is 0.561. This means that the inclusion of large amount of propionic acid will lead to a significant reduction in the total VFA removal efficiency.