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Chlorine Contact Sizing <br /> Sized Based on 60 minutes detention at ADF <br /> 60 min x 6.25 gpm = 375 gal <br /> Actual Chlorine Tank volume provided = 400 gallons <br /> De-Chlorine Contact Sizing <br /> Sized Based on 50 minutes detention at ADF <br /> 50 min x 6.25 = 312.5 gallons <br /> Actual De-Chlorine Tank volume provided = 348 gallons <br /> Blower/Motor—Equalization Tank <br /> Based on 1.25 cfm per 1,000 gallons <br /> 1.25 cfm / 1,000 gal x 4,350 gal = 5.44 cfm <br /> Actual Blower air provided = 22 cfm <br /> One (1) Blower/Motor = 1 HP <br /> Blower/Motor—Aeration /Sludge /Airlifts <br /> Sludge Holding Based on 30 cfm / 1,000 cf <br /> 2,975 gal / 7.48 gal/cf= 397.73 cf <br /> 397.73 cf x 30 cfm/1,OOOcf= 11.93 cfm <br /> Aeration Basin Based on 2,000 cf/day/#BOD <br /> 2,050 cfd/#BOD x 18#/ 1,440 min/day = 25.62 cfm <br /> Airlifts <br /> One sludge airlift @ 6 cfm/lift = 6 cfm <br /> One skimmer airlift @ 5 cfm/lift = 5 cfm <br /> Total cfm required = 11.93 + 25.62 + 6 + 5 = 48.55 cfm <br /> Actual Blower air provided = 70 cfm <br /> Two (2) Blower/Motors = 5 HP <br /> Equalization Pumps <br /> Sized Based on 1.5 Q to Aeration Tank = 9.4 gpm <br /> Equalization Pumps Pump to Flow Regulator Box <br /> Flow Regulator Box Provided w/V-Notch = 9.4 gpm to Aeration Tank <br /> Excess Flow Returned to Equalization Tank <br /> Equalization Pump Provided = 120 gpm @ 10' TDH <br /> Equalization Pumps (2) = 0.5 HP <br /> Page 10 of 11 <br />