The shape of the biological flake present in treatment systems directly affects the sedimentation rate. It is influenced by several factors, from the type of homogenization of the place, toxicity and particular characteristics of each effluent, to the amount of food or the predominance of filamentous organisms.
At this stage of the analysis, characteristics such as shape, size and density of the flakes are observed. Ideal flakes are compact and rounded, but not too globular. Large, delineated biological flakes facilitate the decantation step, thus obtaining a final clarified effluent, with low turbidity and quality. The presence of small or highly dispersed biological flakes can result in effluent with turbidity or difficult to settle.
