A completely mixed aerobic digester is to be designed to treat the waste solids characterized in Study Question $6.$ The solids will be thickened to $10,000$ mg$/$L prior to digestion but no additional thickening will be prac$-$ ticed in the digester. The winter operating temperature will be $1$O$"$C$,$ and the temperature correction factor, $8,$ is $1\mathrm{.}04.$The flow rate of the thickened solids will be $500$ m$3/$day$.($a$)$ What SRT is required to provide $38\%$ VSS destruction during winter operating conditions? $($b$)$ The temperature of the bioreactor can be elevated to $25\backslash$deg C by insulation and selection of the oxygen transfer device. What SRT is required to achieve a $38\%$ VSS destruction at this temperature? $($c$)$ What is the SOUR of the digested solids at $25"$C$?($d$)$ What is the oxygen requirement for the aerobic di$-$ gester? $($e$)$ What volume must the digester have at $25"$C$?($f$)$ Assuming that FSS are lost during digestion in a first order manner, what is the percent reduction in TSS at $25"$C$?(8)$ How much power is required to mix the bioreactor at $25"$C$?$