Precipitation and flocculation are key processes in wastewater treatment that aim to effectively remove dissolved and colloidal contaminants. In precipitation, chemical precipitants such as aluminum sulfate or ferric chloride are added to the wastewater. These precipitants react with the pollutants dissolved in the water and form poorly soluble compounds that precipitate as flocs. This process makes it possible to remove a variety of contaminants, including heavy metals and phosphates, from the water and significantly reduce the pollutant load.
This is followed by flocculation, in which flocculants (polymers) are added to the wastewater to aggregate and enlarge the flocs that have formed. These larger flocs settle more quickly and can be removed more easily by sedimentation or flotation. The combination of these two processes ensures high efficiency in wastewater treatment and enables compliance with strict environmental regulations. Our precipitation and flocculation plants are designed to optimally control this process and adapt it individually to the specific requirements of your wastewater streams.