The ultimate clarifier

ACTIFLO® is a high rate clarifier exclusively developed and patented by Veolia Water Technologies.
With more than 1,000 references all over the world, ACTIFLO® has been in use for municipal and industrial water and wastewater treatment for more than 25 years.

ACTIFLO®: A High Rate Clarification Process with Extremely Small Footprint

ACTIFLO® is a high rate compact water clarification process in which water is flocculated with microsand and polymer in a Turbomix® draft tube. The microsand enhances the formation of robust flocs and acts as ballast, significantly increasing their settling velocity. The unique characteristics of the resulting microsand ballasted flocs allow for clarifier designs with very short retention times, high rise rates and extremely compact system footprints that are up to 50 times smaller than other clarification processes of similar capacity.


For small to medium-sized applications (100 to 50,000 m³/d), a range of package plant solutions is available, with optional built-in filters for water polishing.

ACTIFLO® Mobile Units

ACTIFLO® Mobile Units, developed by Aquamove, provide mobile solutions for emergency, temporary or supplemental water and wastewater treatment applications.


Designed to further enhance water treatment, ACTIFLO® Carb combines the unique clarification features of ACTIFLO® with the adsorption capacity of Powdered Activated Carbon (PAC) for the elimination of specific compounds or micro-pollutants that cannot be removed by chemical treatment.

ACTIFLO® Softening

ACTIFLO® Softening combines water clarification and water softening in a single compact treatment unit for the reduction of hardness, alkalinity, silica, heavy metals and other dissolved species. The addition of chemicals together with controlled recirculation of sludge enhances the formation of microsand ballasted crystalline compounds that quickly settle in the clarifier.