Patent ID: 7309419

Claim:
A recirculation device, comprising: a horizontally extending splitter pipe having a fluid inlet at one end in flow communication with an outlet of a wastewater treatment tank, a fluid outlet at an opposed end and at least one orifice in a side wall of said splitter pipe in flow communication with said treatment tank, said orifice having an adjustable flow leveler mounted in adjustable flow leveling relation with said at least one orifice whereby said orifice recirculates a first percentage of wastewater into said treatment tank; and, a vertically extending valve conduit having an inlet at an upper end in flow communication with said fluid outlet of said splitter pipe and a discharge outlet at a lower end with a valve disposed therebetween in opening and closing relation with said inlet and said discharge outlet, said valve being positionable between an open and closed condition in response to a pre-selected level in said treatment tank.