Processes Controlling Groundwater Chemistry from Mulakalacheruvu Area,Chittoor District,Andhra Pradesh,South India: A Statistical Approach Based on Hydrochemistry |
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| Authors: | A Nagaraju E Balaji L H Sun A Thejaswi |
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| Institution: | 1.Department of Geology,Sri Venkateswara University,Tirupati,India;2.School of Resources and Civil Engineering,Suzhou University,Suzhou, Anhui Province,China;3.Department of Environmental Sciences,Kakatiya University,Warangal,India |
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| Abstract: | In India groundwater is an important source for domestic and agricultural purposes. Management of this resource is very important to meet the increasing demand of water. In this study, the ionic concentrations of groundwater from Mulakalacheruvu area, Chittoor district, Andhra Pradesh, South India have been calculated during May 2014 and the major ionic concentrations have been analyzed by hydrochemcial and statistical methods in order to trace the main processes controlling the groundwater chemistry. The results have suggested that these groundwater samples belong to Na-HCO3 (18 samples), Ca-HCO3 (16 samples) and Mg-HCO3 (6 samples) types. The hydrochemical methods suggest that the rocks in the aquifer system are sources of the major ions in the groundwater, and the silicate is the main mineral phase. Three sources viz. mafic silicate, felsic silicates and easily soluble minerals have been identified as responsible for the chemical variations of the groundwater. Further, the source contributions of silicate minerals for the groundwater hydrochemistry have been analyzed. These results suggest that the hydrochemistry of the groundwater in the south-eastern area is mainly controlled by weathering of felsic silicate (61-100%), whereas the north-western area is principally contributed by mafic silicate minerals (48-100%). |
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