Stripping of TCE from water at low air/water ratios

Trichloroethylene was removed from water by air stripping in a packed column using low air/water ratios, and the measured removal efficiencies were used to correlate the height of a transfer unit using a model which takes into account both liquid‐ and gas‐phase resistance to mass transfer. The resulting correlation was used to optimize the design of a combined air stripper and offgas treatment system. Estimated overall cost savings of up to 26% compared to conventional air strippers can be realized by use of the optimum air/water ratio.