Explain the design criteria for sedimentation basin, Civil Engineering

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Explain the Design Criteria Sedimentation basin

Surface Loading rate (or overflow rate), Vo = Q/A (flow rate/surface area)

Detention time t or ? = V/Q (Volume /Flow rate)  

Weir loading = Q/L (flow rate/length of weir) ≤ 20,000 gpd/ft

Minimum depth 10 ft and Free Board = 1- 2ft 

Width 30-50 ft and length 100-200 ft with a L:W of 3:1 to 5:1 (4:1 typical) for rectangular basins and diameter of less than 200 ft for circular tanks.

 


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