Patent ID: 8343355

Claim:
A dissolved air flotation system for purifying influent water comprising: a flotation tank having an upstream and a downstream end; a skimmer disposed above the flotation tank, said skimmer extending transversely across the flotation tank; means for driving the skimmer from the upstream end of the flotation tank to the downstream end of the flotation tank, thereby pushing float over the downstream end wall of the flotation tank; a float collection tank disposed downstream of the flotation tank, in position to receive float from the down stream end of the flotation tank; output manifolds disposed in the lower portion of the downstream end of the flotation tank for drawing a portion of the clean water from the flotation tank; a filter aligned to receive clean water from the output manifolds and provide filtered clean water output disposed downstream of the float collection tank; a disinfectant system aligned to receive filtered clean water output from the filter disposed downstream of the float collection tank; a conveyor belt disposed proximate the downstream wall of the flotation tank to receive float pushed over the downstream end wall of the flotation tank, said conveyor belt being operable to convey float away from the flotation tank, in the downstream direction, and a float collection tank disposed relative to the conveyor belt to receive float from the conveyor belt; a control system operable to operate the skimmer to translate along the length of the flotation tank and correspondingly operate the conveyor belt to convey float deposited thereon into the float collection tank at predetermined intervals; and means for drawing clean water from the lower portion of the downstream end of the flotation tank.