The growing resurgence of dissolved air flotation: advances and applicability for drinking water treatment

摘要

Recent advancements in DAF technology have primarily focused on a large reduction in flocculation detention times (as low as five minutes), and increased DAF loading rates (as high as 35 to 40m/h).rnThis improved understanding of DAF operation and large increases in hydraulic loading rates have allowed DAF plants to achieve significantly smaller footprints, considerably reducing capital costs. It should be noted that the primary factors influencing DAF plant operating costs remain unchanged over the last 40 years; these costs have not been significantly impacted by the advances to date.