Lamella Clarifier Sizing

2020-04-02

Inclined plate settlers inside a Lamella Clarifier are positioned on a 55-60° angle to allow the settled solids to slide down the plate and to the bottom of lamella clarifier. In this case the distance the particle must travel vertically is:

D= Distance the Particle Travels Vertically
d= Plate Spacing
Cos µ = Cosine of Plate Angle (55-60°)

Cos µ=d/D
D=d/Cos µ

Inclined plate settlers use the horizontally projected area and, therefore, the total plate area may be calculated by:

S1=S2*Cosµ
S2 = S1/Cosµ

S1 = Horizontally Projected Area
Cos µ = Cosine of Plate Angle (55-60°)
S2 = Total Area of Plate Surface Required

Because each plate settler provides an effective settling area equal to that of its horizontal projection, Lamella Plate Settlers will increase a lamella clarifier's effective settling area by up to ten times. For the details and standard specification of Lamella Clarifier, please click to read: Standard Lamella Clarifier.

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