Patent ID: 8574431

Claim:
A wastewater filter assembly comprising: a filter having an influent side and an effluent side, the filter being positioned to filter influent to produce effluent; a backwash system adapted to control flow of backwash fluid from the effluent side to the influent side; an agitation system having an aperture positioned on an influent side of the filter and at a level below at least a portion of the filter and adapted to control the flow of agitating fluid from the influent side to the effluent side, wherein the agitating fluid is less dense than the wastewater being filtered; and a control system programmed to control the backwash system and the agitation system in such a manner that the flow of backwash fluid flows in a first direction through the filter while the agitating fluid flows in a second direction through the filter opposing the first direction.