Patent ID: 7056441

Claim:
A wastewater processing apparatus comprising: a rotating filter thickening means ( 20 ) comprising a number of rotating coaxial filtration disks ( 70 ) for receiving and filtering a wastewater mixture and producing a first filtrate output and a first sludge output; a screw press thickening means ( 24 ) comprising a rotating screw ( 90 ) for receiving the first sludge output and forming a final sludge output and a second filtrate output; a dissolved air floatation means ( 46 ) for receiving the first filtrate output from the rotating filter thickening means ( 20 ) and producing a first solid output and a third filtrate output; a first conducting means ( 10 , 12 , 29 ) for mixing incoming raw manure wastewater and the second filtrate output from the screw press thickening means ( 24 ) to produce the wastewater mixture for input to the rotating filter thickening means ( 20 ); and second conducting means ( 34 ) for branching off part of said second filtrate output to a spray cleaning means ( 38 ) for spraying said branched part of said first filtrate output onto said filtration disks ( 70 ) for their cleaning.