Combined floc clarifiers
Actiflo™ is a compact, high-rate clarifier used for the treatment of water and municipal and industrial wastewater. This technology was developed and patented by Veolia Water Solutions & Technologies.
Raw water is mixed with a coagulant (iron or aluminium salt) and then fed to a Turbomix™ draft tube reactor containing Actisand™ microsand. The microsand serves as a seed for floc formation and also acts as a ballast or weight to aid a rapid settlement.
The sludge and microsand slurry is pumped to a hydrocyclone. Clean microsand is recycled back to the flocculation tank, while the sludge is continuously discharged.
Actiflo™ is particularly efficient at removing taste and odour associated with algal bloom. It can also be used for the recovery of backwash water from rapid gravity filters, thus reducing water loss and running costs.
Settling rates: 60-80m/h (25-35gpm/sf).
Actiflo™ can be used for primary settlement, treatment of biofilter backwash water, clarification of trickling filter effluents, stormwater treatment, tertiary polishing or phosphorus removal, and water reuse for crop irrigation or aquifer recharge.
Settling rates: 60-150m/h (25-60gpm/sf).
For industrial water and effluent applications, Actiflo™ is ideal for the recycling of process water and pre-treatment of boiler feed or cooling tower make-up water. It can also be used to remove solids, colour and heavy metals, and can be used for lime soda softening.
Settling rates: 60-200m/h (25-80gpm/sf).