A small community water well has become contaminated with a chlorinated solvent believed to be perchloroethylene (PERC, molar mass of 166). We wish to design a facility to treat 50 gpm of this water using air stripping to bring it to EPA drinking water standards. The well water is currently testing at 100ppm (by weight) of the PERC and the EPA drinking water standard is 5ppb. A consultant has recommended a column that is 2 feet in diameter and packed with 10mm ceramic Raschig rings that is operated with a gas flow of twice the minimum rate. Assume the entering gas and liquid streams are at 20C and 1atm. Please calculate the required air flow rate and the height of the packing required. Data: Phase equilibrium relation for PERC between air and water y=471x kxa=400hrft3lbmole and kya=0.65h3ft3lbmole A small community water well has become contaminated with a chlorinated solvent believed to be perchloroethylene (PERC, molar mass of 166). We wish to design a facility to treat 50 gpm of this water using air stripping to bring it to EPA drinking water standards. The well water is currently testing at 100ppm (by weight) of the PERC and the EPA drinking water standard is 5ppb. A consultant has recommended a column that is 2 feet in diameter and packed with 10mm ceramic Raschig rings that is operated with a gas flow of twice the minimum rate. Assume the entering gas and liquid streams are at 20C and 1atm. Please calculate the required air flow rate and the height of the packing required. Data: Phase equilibrium relation for PERC between air and water y=471x kxa=400hrft3lbmole and kya=0.65h3ft3lbmole