engineering recuitment GATE CE 2023-24 Test Series Environmental Engineering Water Treatment Sedimentation
A suspension of sand-like particles of diameter 0.12 mm and below is flowing into a settling tank at 0.15 m3 / s. Assuming g = 9.81m / s2 Specific gravity of particles is 2.65 and kinematic viscosity of water is 1.0105 × 10-2 cm2 / s.
Which of the following is/are true?
1
The minimum surface area required to remove particle size of 0.08 mm and above with 100% efficiency is 26.338 m2
2
If the depth of the Settling tank increases 4 times of width then the new surface area is 11.709 m2
3
The minimum surface area required to remove particle size of 0.08 mm and above with 100% efficiency is 26.338 cm2
4
If the depth of the Settling tank increases 4 times of width then the new surface area is 263380 cm2