The settling vessels are equipment destined to solid-liquid separation; usually have
continuous operation, with a circular section, presenting one conic and one cylindrical part. They are
very used in chemical industries: wastewater treatment, minerals industries; to concentrate or to
remove the solids. The solid particle splitting with small granular becomes difficult through the
operation of conventional sedimentation. An expedient very used in the industry is the flocculant
substance addition, whose objective is to promote the precipitation of particles, with decantation
speed is upper than the single one. The present work aim the study of the burst operational
conditions that influence the formation and the stability of these aggregates, the flake, the effect of
pH and the concentration of flocculant using kaolin suspension and genfloc, that contains aluminum
sulfate, as a flocculant; and the capacity of conventional settling vessel, which area of the
transversal remains constant, considering this operational conditions.