INDUSTRIAL EMISSION CONTROL USING LIDAR TECHNIQUES

A mobile DIAL (differential absorption lidar) remote sensing system ha s been employed in the monitoring of industrial pollutant emissions. M easurements of sulfur dioxide and mercury vapor were performed at nine different Swedish industrial plants within the framework of a control program commissioned by the Swedish Environmental Protection Agency. Total atmospheric fluxes of these species could be determined by combi ning wind data with a mapping of the concentration distribution downwi nd from the sources. The emission values obtained were compared with i n situ measurements made by the companies themselves. The values from single point sources correlate well, whereas the DIAL system normally measures a higher total flux from several distributed sources includin g diffuse emissions. The results are used to discuss the applicability and limitation of the DIAL technique for remote surveillance of indus trial emissions.