Aeration Tank - Detention Time

1. Check the Average Hydraulic Detention Time q

When Q_Ad = 5 mgd

Actual Volume (ft³) Q (gal/day)

(hr)

q > 3 hr, ok for the design

When Q = 10 mgd

q = 2.15 hr, acceptable during peak hourly flow

2. Check the U and F/M

V ?Total volume of tank

E_s ?BOD₅ removal efficiency in aeration tank

ok for the design

Q_Ad (gal/day) S₀ (mg/l) S (mg/l) y E_s

Total Tank Volume, V(ft³) MLSS (mg/l) MLVSS/MLSS

U (1/day) F/M (lb BOD₅/lb VSS�d)

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If you have any suggestion, please email Professor Roy at [email protected]