A $4\mathrm{.}5$ m deep circular settlement tank with an inflow of $4,245$ m

$3$

d

$-1$

is

required to remove all particles $>=0\mathrm{.}10$ mm with a SG $>=1\mathrm{.}15.$ Determine the

required diameter and volume of the tank.

Assume the following:$-$

$=1\mathrm{.}307$ x$10-3$

Pa$.$s

$\backslash$rho w $=1,000$ kg m

$-3$

g $=9\mathrm{.}81$ m s$-2$

Discrete particle settlement and laminar flow conditions apply.

iii$)$ Determine the hydraulic retention time of the settlement tank in hours.