Volume 46, Number 6, 2011ICRER 2011 – International Conference on Radioecology & Environmental Radioactivity: Environment & Nuclear Renaissance
|Page(s)||S323 - S329|
|Section||Using Data for Studies|
|Published online||09 January 2012|
Transport of pollutants from nearby catchments to the Nagarjuna Sagar Dam
1 Environmental Assessment Division, BARC, Trombay, Mumbai - 400085
2 Radiation Safety Systems Division, BARC, Trombay, Mumbai - 400085
The understanding of the fate of the various pollutants and its mobility in the catchments of Nagarjun Sagar dam built on the Krishna river is of utmost important .As the Pedaguttu and Lambarpur catchments area has a proposed Uranium mining sites and Nagarjuna Sagar dam is the third largest man made dam which is the ultimate destination of all the rivulets in the Pedaguttu catchments. The concept of the distribution coefficient is invoked to understand the residence time of radionuclide on its nature. Expressions are derived to estimate the value of soil erosion constant using naturally occurring radionuclide. Based on 210Pb profile in the sediment core, the sedimentary load of 0.24 gm m−2y−1 was observed in the Pedaguttu and Lambarpur side of the Dam. The retention time and the transport coefficient of the pollutant were further obtained by using the appropriate modeling equation and was found 3776 and 2.7 × 10−5 respectively. The comparative exercise of the retention time and transport coefficient was done with the other studied catchments of the world for the further validation of the result.
© Owned by the authors, published by EDP Sciences, 2011
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