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11 <br />41) <br />6706-031 <br />TABLE 4 • <br />SLUDGE, SEPTAGE AND GREASE RECEIVING <br />UNIT DESIGN <br />Bar Screens <br />Number 5 <br />Type Course Manual Screen <br />Dimensions 3 feet wide x 3 feet high <br />30° slope from horizontal <br />Cyclone Degritting Unit <br />Number of Units 2 <br />Underflow 15 gpm <br />Pump Type Torque Flow <br />Pump Flow 100 gpm <br />Pump TDH 45 feet <br />Classifier Size 12 -inch straight tank <br />Classifier Mesh Size 150 <br />Equalization/Storage <br />Sludge <br />Detention Time 25 hours <br />Volume per tank 14.400 cubic feet <br />Number of tanks 2 <br />Septage <br />Detention Time 48 hours <br />Volume per tank 1.728 cubic feet <br />Number of tanks 2 <br />Grease <br />Detention Time 40 hours <br />Volume per tank 1,728 cubic feet <br />Number of tanks 1 <br />Grease Concentration <br />Detention Time 120 minutes <br />Volume 1,925 cubic feet <br />M. VRB2/4 <br />9/12/91 <br />19 <br />