Sedimentation Test – 2

1. What will be the surface area of the basin for a flow of 2*10⁶ litre per day having a surface loading rate 10,000 litre/day/m²?

2. The detention period of a rectangular tank is given by _______

3. The average time required by water to pass through the settling tank is called _______

4. The design value of surface loading for horizontal flow circular sedimentation is _______

5. 1cm per second settling velocity corresponds to a surface loading of ______ litre per day per m².

6. Range of Displacement efficiency in the plain sedimentation tank is ___________

7. The quantity of water flowing per hour per unit horizontal area is called ________

8. The sedimentation basin should be made as deep as possible.

9. Detention time for a circular tank is given by _______

10. The detention period of the vertical flow clarifier is _______

11. Settling tank efficiency is reduced by _______
i. Eddy current
ii. Surface current
iii. Density current