The purpose of the present study was to describe the pattern of Spatial Pollution Rose pattern in the neighbourhood of thermal power stations in Neyveli, near 200 km south west of Chennai.

The present study involves the performance evaluation of the USEPA ISCST3 model for prediction of short-term SO2 concentrations in the ambient environment of NLC complex.

The purpose of the present study is to describe the pattern of pollutant dispersion in the neighbourhood of the thermal power station-II in Neyveli. Neyveli Lignite Corporation houses two mines and two thermal power stations. Thermal power station-II is designed for 7 numbers of boilers each producing electricity at 210 MW, using lignite as the fuel.

The laboratory model of Rotating Biological Contractors (RBC) which was used in the present study, is a modified one, in respect of, increased reactor depth, varying depth of submergence of rotating discs and supplemental air supply. Synthetic sago wastewater was used to study the performance of the modified RBC.