Selecting among physical/chemical processes for removing synthetic organics from water
Authors: Dvorak, Bruce I.; Lawler, Desmond F.; Speitel, Gerald E.; Jones, Darrell L.; Boadway, Deborah A.
Source: Water Environment Research, Volume 65, Number 7, November/December 1993 , pp. 827-838(12)
Publisher: Water Environment Federation
A rational framework for selecting the least-cost treatment technology for aqueous organic wastes was developed by using performance and cost models. The following three treatment options were evaluated for 15 different chemicals in this research: packed tower air stripping, packed tower air stripping followed by gas-phase adsorption (granular activated carbon) of off-gases, and liquid-phase adsorption (granular activated carbon). The least-cost air stripping tower design was found to change when off-gas treatment was added. Air stripping without off-gas treatment was determined to be less expensive than liquid-phase adsorption in nearly every case. A methodology was created for comparing the relative costs of liquid-phase adsorption and air stripping with gas-phase adsorption. The comparison methodology is based upon physical parameters of the target chemical: Henry's constant and the solute distribution parameter. The result is a diagram for rapid identification of cases for which one treatment option is significantly less expensive than the other.
Document Type: Research Article
Publication date: 1993-11-01
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