Air Quality Modeling of Gaseous and Particulate Dispersion from Coal-Fired Power Plants

摘要

The construction of large power plants in the pristine environment of the Southwest has brought to the fore many air quality questions. Among these are those of plume obscuration of distant terrain features, deposition of potentially harmful materials on water or land srfaces, ground uptake of contaminants, coversion of contaminants from one form to another, and the appropriate assumptions for plume behavior near elevated terrain. These questions are addressed through modification of existing dispersion models to provide prediction of dry deposition of materials, to account for ground uptake and conversion of one contaminant to another, and to provide predictions of plume obscuration of terrain features. The modifications are used to estimate the relevant parameters for a large coal burning power plant in the Southwest. In addition, a sensitivity analysis for differing assumptions of plume override near high terrain is presented.