The dynamic decanters, unlike the static ones, have been designed for large water flows, which is why they take on a circular shape. In addition to the principle of gravity introduction of flocculants during the process that unites them to the static ones, the dynamic settlers are also characterized by a fast thickening of the mud on the bottom of the tank. The process is characterized by clean water, on top of the decanter, which is taken and conveyed into a tank, while the contaminated and dirty sludge thickens and is subsequently expelled by means of pumps.