Environmental assessment of pollutants released from industrial plants in helwan

The present work is mainly devoted to the study of air pollution due to the increasing amount of particulate matter entering the atmosphere during the process of cement manufacture in helwan industrial region, about 25 km south of greater Cairo City. Meteorological and atmospheric dispersion modelling are presented to study the concentration of dust in air (Mug/m) and at ground level (g/m2) emanating from cement stacks (helwan plant) at various distances and to evaluate the exposure to population living area. Computer program was developed for determining the hourly stability classes and evaluate the height of mixing layers. The model calculate the concentration from multi--sources stacks (Tourah, Helwan, and national company), which allow to make a comparison between measured and calculated results. The model used in this study could be applied to calculate the concentration of radioactive pollutants released from nuclear facilities