: Determine if an existing packed tower air stripper$8\mathrm{.}5$ m high, $3$ m in diameter and filled with $5\mathrm{.}1$ cm $(2)$ plastic pall rings$($Cf$=25)$ can be used to treat the groundwater That is contaminated with $1\mathrm{.}385$ mg$/$L $1,2-$dichloroethane and flowing at a rate of $1000$ m$3/$d$.$ The $1,2-$dichloroethane concentration needs to be reduced to $0\mathrm{.}05$ mg$/$L$.$ Assume the air flow rate is $40$ times the groundwater flow rate and the temperature is $17\backslash$deg C$.$ assume that the KLa value is in the range of $0\mathrm{.}01/$s $-0\mathrm{.}02/$s for this approximation. Show all work and provide any assumptions that you may have had to make.