Civil Engineering - Water Supply Engineering - Discussion

Right @Dvs.

Depth of tank is the right answer. I also agree.

According to me, A is the correct answer.

Both detention and depth of tank is correct.

The Correct answer is A.

The settling velocity of a particle in a sedimentation tank depends on The surface area.

Efficiency is nothing but the performance of the sedimentation tank. It is maximum when the maximum amount of suspended particles in the raw water are separated. In sedimentation tanks, efficiency purely depends upon the settling velocity and overflow velocity.

Efficiency of Sedimentation Tank (efficiency) = (Vs/Vo) x 100.
Vs = settling velocity of the particle.
Vo = overflow velocity.