Air quantity impact assessment due to koradi thermal power plant

Abstract

Prediction of ambient air quality and impact of emission requires an assessment of transport, dispersion and removal process of pollutant species. Gaussian dispersal model (ISCST3) used to predict environmental impact based on observed meteorological data. Temporal and spatial distribution of SO2 concentration in the vicinity of the Koradi Thermal Power Plant near Nagpur has been studied. Calculated hourly mixing height, stability classes and ventilation coefficient data has been used as an input to the model for computing location wise daily highest concentration of SO2 and analyzed for temporal and spatial distribution of SO2 concentration. Extreme and highest SO2 concentration has been compared with CPCB’S ambient air quality standards and found within the critical limit. Two minima and maxima of extreme concentration of SO2 were found in a year. Study suggests high dispersal capacity of the atmosphere in the vicinity of the plant.