Settling Tank - Launders & Trough

1. Launders

For 3 tank service at Q_p = 10 mgd,

q = 1.29 ft³/s

b₁ = 1'





For 4 tank service at Q_p = 10 mgd,

b₁ = 1'

Q_p(mgd) # of Tanks # of Launders b₁(ft)

q(ft³/s) y₁(ft) y₂(ft)

2. Trough

For 3 tank service at Q_p = 10 mgd,

W = 2'

Q_p(mgd) # of Tanks W(ft)

z₁(ft) z₂(ft)

Depth of trough = 1.5' > 1.02'

Outlet box size = L � W � D = 2.5 � 2.5 � 3'

END