Civil Engineering > GATE 2020 SET-2 > Environmental Engineering
Two identically sized primary settling tanks receive water for Type-I settling (discrete particles in dilute suspension) under laminar flow conditions. The Surface Overflow Rate (SOR) maintained in the two tanks are 30 m3/m2.d and 15 m3/m2.d. The lowest diameters of the particles, which shall be settled out completely under SORs of 30 m3/m2.d and 15 m2/m2.d are designated as d30 and d15, respectively. The ratio, d30 / d15 (round off to two decimal places), is _______.
Correct : 1.40 to 1.42
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