The following data were obtained using four bench scale complete mix activated sludge units to

treat a food$-$processing waste. Using these data, determine Y and kd$.$

Parameter

Units X

$($gMLVSS$)$

rg$$

$($gMLVSS$/$day$)$

U

$($gBOD$5/$gMLVSS$-$d$)$

$118\mathrm{.}810\mathrm{.}880\mathrm{.}17$

$27\mathrm{.}351\mathrm{.}190\mathrm{.}41$

$37\mathrm{.}651\mathrm{.}420\mathrm{.}40$

$42\mathrm{.}891\mathrm{.}561\mathrm{.}09$