Appendix: Segregation of sludge bed

Fig. 53 Settling of granules in the population model of chapter On the mechanisms in a reactor of 6 m water depth. Sludge bed consisting of granules of 200, 600, 1000 and 2000 µm each of a biomass concentration of 2 kg m³. Output 30 minutes with 1 frame per minute. The largest granules are already stacked on top of each other on the bottom of the reactor after a few minutes, while the smallest fraction is still settling after 30 minutes.