Patent ID: 7767080

Claim:
A dissolved air flotation system for purifying influent water comprising: a flocculation tank having an influent water supply port and an output communicating downstream to a flotation tank; 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 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; and means for drawing clean water from the lower portion of the downstream end of the flotation tank.