$8-8$ The following information is given for an activated sludge system designed with a long

enough SRT to provide complete nitrification:

Note: Wastewater $1,2,$ or $3$ to be selected by instructor.

Determine $($a$)$ the aeration tank oxygen requirements in $k\frac{g}{d},($b$)$ the aeration tank oxygen

uptake rate in $m\frac{g}{L}*h,($c$)$ the aeration tank biomass concentration $(m\frac{g}{L}),$ and $($d$)$ the

portion of the total oxygen required that is needed for nitrification.