PROBLEM $1$

The following details are available for an air$-$stripping tower that is being used to reduce influent bromoform concentration from $500\frac{g}{L}$ in a groundwater source.

Packing Material

Packing Factor $"F"$

kL$.$a for packing material

Flow rate of water

Flow rate of air

Design temperature

Henry's Constant for bromoform at $20C=5\mathrm{.}35E-04$atm$-\frac{m^3}{m}ol.$

Diameter of tower

Height of tower

$=,25mm.$ Berl Saddle

$=,110(dimensionless)$

$=100h{r}^{-1}$

$=1\mathrm{.}0MGD$

$=,650,000$ Kilogram$\frac{s}{d}ay$

$=,20C$

$5\mathrm{.}35E-04$atm$-\frac{m^3}{m}ol.$

$=,1\mathrm{.}5m$

$=,2\mathrm{.}25m$

Determine

$($a$)$ The concentration of bromoform exiting the tower

$($b$)$ The stripping factor

$($c$)$ The gas pressure drop

$($d$)$ The concentration exiting the tower if the contaminant now changes to $500\frac{g}{L}$ of chloroform in the influent. Everything else remains the same. The Henry's constant for chloroforn is $2\mathrm{.}8E-03$atm$-\frac{m^3}{m}ol.$