Question #$2$

$(20$ points$)$

Determine the breakpoint chlorination required $($concentration$,$ dose and volume$)$ for the

following treated industrial wastewater characteristics:

Use modified Chick$-$Watson formula and following disinfection properties $[k^{\text{'}}=0\mathrm{.}25\frac{L}{mg-\text{m}\text{i}\text{n}}$;

$C{T}_{\text{l}\text{a}\text{g}}=1mg-mi\frac{n}{L}].$ The effluent $($required$)$ minimum total coliform should be $20/100$ mL$.$

modified Chick$-$Watson formula:

$log(\frac{N_k}{N_0})=-k^{\text{'}}eT+k^{\text{'}}C{T}_{\text{l}\text{a}\text{g}}$