Sedimentation is the downwards movement of an object relative to its surrounding medium, due to the force of gravity. Sedimentation Dissolved air flotation DAF is a method whereby bubbles are produced by the reduction of pressure in a water stream saturated with air. Sedimentation The purpose of sedimentation is to remove preexisting solids,
Settling basins are ponds constructed for the purpose of removing entrained solids by sedimentation. Settling basins are built with mechanical means for continuous removal of solids being deposited by sedimentation. Dissolved air flotation clarification systems are considered high rate clarifiers which introduce water saturated with air to float.