For fats, oils, greases, and suspended solids — especially in food, beverage, and meat processing — dissolved air flotation is often the most direct path to a manageable discharge and a smaller sewer surcharge bill.
Floating solids and oils to the surface instead of settling them out
A DAF system dissolves air into a pressurized recycle stream, then releases that pressure at the inlet of a flotation tank. The pressure drop forms a cloud of microbubbles that attach to suspended solids, fats, oils, and grease and carry them to the surface, where a skimmer removes the floated material continuously.
Clarified water is drawn off beneath the float layer. Because flotation lifts material rather than waiting for it to settle, DAF handles low-density solids and FOG-heavy streams that gravity clarifiers struggle with, and it does it in a comparatively small footprint.
DAF is most often specified as pretreatment ahead of biological treatment — protecting the downstream process and cutting sewer surcharges — but it also shows up as a primary clarification step and as a sludge thickening tool.
From a single piece of replacement equipment to a full plant process flow, PLZ Water Tech works alongside your team to design, size, and source the right technology.
