METHOD OF DETERMINING EMISSION RATES OF AIR POLLUTANTS FROM COAL MINES,

摘要

To maintain the energy demand, opencast mining has been growing at a phenomenon rate in India. It creates high air pollution problem within the work zone areas and disperses along with wind for long distances. Regulatory requirements for air quality impact assessment are discussed in the specification. But there historically have been no well-defined guidelines for evaluating such impacts . This invention relates to a novel method for determining emission rates of air pollutants from mines. For the application of this invention a large opencast coal project of BCCL was chosen . This specification focuses on the use of emission factor data for the quantification of mine dust and estimation of emission rates. The study area was also being polluted by the surrounding industrial activities. It also discuses the use of factal analysis technique to evaluate the actual contribution of air pollutants, determination of emission rates and dispersion of pollutants. Approach for the selection of air monitoring stations and methods adopted for air quality survey for factal analysis have been described. Four season data were generated and they were critically analyzed on the basis of dominant wind directions at different seasons. From the monitoring data obtained for factal analysis the emission rates of mining activities have been determined. A set of empirical formulae has been developed by considering the major influencing parameters for the estimation of SPM, SO2 and NOx emission rates for the whole mine. The invention provides a sort of fundamental new scientific insight for the determination of emission rates of air pollutants, which has wide applications. The methodology can be accepted as a guide line for the assessment of emission rate on an industrial scale for various sites . These may help the practicing mine environmental engineers and mine managers to get prior information on the likely impact on air quality and they can take appropriate action to control the air pollution problem in the area.[IN-KOL-2009-00169A]