Flocculation plants are designed and developed for the treatment of wastewater containing non-biodegradable soluble pollutants, such as inert minerals, organic substances, mineral oils, detergents and solvents, paints or residues of suspended organic substances. The principle of operation is the use of flocculating agents that destroy colloidal systems through a series of chemical transformations leading to obtaining recoverable waste that can be discharged into a container.