A water treatment plant having flow rate of 600 m${}^3$/ hr has to remove 80% of the particles having a settling velocity of 0.18 cm/sec. The required plan area of a Type - I settling tank is

Q. For a water treatment plant having a flow rate of 432 $m^3/hr$, what is the required plan area of a Type I settling tank to remove 90% of the particles having a setting velocity of 0.12 $cm/sec$

Q. A water treatment plant has a flow rate of $0.6m^3/s$. The settling basin at the plant has effective settling volume dimensions of length $20m$ depth $3m$ and width $6m$. What percentage of the particles having a settling velocity of $.004m/sec$ is removed?

Q. A town has an existing horizontal flow sedimentation tank with an overflow rate of $17m^3/day/m^2$, and it is desirable to remove particles that have a settling velocity of $0.1mm/sec$. Assuming the tank as an ideal sedimentation tank, the percentage of particles removal is approximately equal to

Q. The raw water entering an ideal horizontal settling tank contains the following two types of particles :
Particle
type Settling velocity
(mm/sec) Concentration
(mg/ l)

I II	0.2 0.1	300 460

The surface overflow rate of the settling tank is 17.28 $\frac{m^3-day}{m^2}$, the concentration of particles in the settled water will be :

Q. Particles intended to be removed in a continuous flow water sedimentation tank, should have settling velocity