The purpose of testing the efficiency of the DAF process, we operated a pilot plant
scaled to about 60m3/day. We tested a sedimentation basin in comparison to DAF, changed
the G values in the coagulation and flocculation process and the removal efficiency of
the turbidity. As well, we investigated the efficiency of the DAF process. Variables
such as low temperature water, coagulation and flocculation type and remove of algae
ability were examined. Testing results showed that DAF is superior than a sedimentation
basin in turbidity and UV-254 removal efficiency. A combination of the G values in the
flocculation processyields the best results at 70/50 and alum of 83percentage, PACS is
87percentage marked removal efficiency. An in line static mixer and back mix coagulation
type is better than a back mixed coagulation type in turbidity removal
efficiency,and algae was almost removed after 1 hours.
