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Calculating Aeration Flow and Pressure Requirements

DETERMINING AIR FLOW RATE SCFM= 0.335∙mgd OTE ∙(ppmBOD∙1.1+ppmNH3∙4.6) SCFM = Air Flow Rate standard ft3/min OTE = Oxygen Transfer Efficiency, decimal ppmBOD = parts per million Biochemical Oxygen Demand ppmNH 3 = parts per million ammonia 1:35 PM 13 •FIELD OTE VARIES FROM 0.004 TO 0.008 PER FOOT OF SUBMERGENCE (0.4% TO 0.8% OTE/ft.)

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  Flows, Air flow

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