For a CSTR activated sludge system using recycle with the following parameters,

plot Se $($effluent substrate concentration in mg$/$L$)$ as a function of SRT$,$ from $0\mathrm{.}3$

days up to $5$ days. Use the following:

k $=8$ d$-1$

K $=80$ mg$/$L

Y $=0\mathrm{.}6$

ke $=0\mathrm{.}05$ d$-1$

So $=300$ mg$/$L

r $=0\mathrm{.}5$

The plot should be nicely done, as for a professional report $($axis titles, units, etc.$).$

Provide a detailed written calculation for S$,$ including units, for SRT $=1$ day