Modeling pollutant migration in the Upper Palar River Basin, Tamil Nadu, India

摘要: Palar River Basin, a crystalline rock region in North Arcot District (Tamil Nadu), India, possesses vast groundwater potential along and near the river course its lands are fertile. Serious contamination of both surface water has been reported this basin as result uncontrolled discharge untreated effluents by tanning industries for last three decades. The health rural farming community people working seriously affected they suffering from occupational diseases such asthma, chromium ulcers skin diseases. About an 11000 hectares area fertile land lost fertility. Total dissolved solids (TDS) concentration at some pockets varies 3000 to 10000 mg/l. As is continuing, prognosis further pollutant migration carried out using mathematical model. A numerical model Upper Basin was developed finite difference technique coupled with method characteristics used predict TDS next 20 years. Sensitivity analysis identify parameters which influencing contaminant migration. shows that advection not dispersion predominant mode solute Basin. Prognosis confirms polluted zone well pollutants will continue increase future. study also indicated even if sources reduced 25% present level, level groundwater, after years, be below 50% 1992 level.