QUESTION $6$

For the scenario in question $5,$ determine the required volume of the disinfection tank to achieve $3-$log removal for Giardia, given the

following:

Tank is unbaffled

Residual free chlorine concentration $=3\mathrm{.}0m\frac{g}{L}$

Volumetric flow rate for treatment plant $=2\mathrm{.}5$ MGD

$1356m^3$

$2231m^3$

$298m^3$

$1488m^3$