Aeration System - Blowers


    a). One blower for one basin peak requirement:

    Air/each tank = 2,556,610 CFD = 1775.4 CFM = 1,800 cm < 3,000 CFM

    Four blowers for system peak requirement: Air = 4 1,800 = 7,200 CFM > 7,100 CFM

    Two blowers for system average requirement: Air = 7,200/2.0 = 7,200/2 = 3,600 CFM

    One more blower spared for maintenance

    Total blower number = 5

    Required pressure = Depth + diffuser + aerator + piping = 6.5 + 0.3 + 0.1 + 0.24 = 7.14 Psi

    Consider cold winter:

    b). Select rotary positive displace blower Type 8PDR (Denver Compressor)

    8 PDR: 8 Psi, 1,800 CFM

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