Identification and Risk Analysis of Pollutants Present in Water Resources of Coimbatore (Noyyal River), India
Abstract
This study was carried out to assess the physico-chemical characteristics and evaluate the heavy metals chromium (Cr), Cadmium (Cd), Nickel (Ni), Lead (Pb), Zinc (Zn) and Copper (Cu) pollution in the Noyyal river, Coimbatore, India. River water samples were collected during November 2019 and analyzed in the laboratory. The parameters including pH, temperature, electrical conductivity (EC), dissolved oxygen (DO), turbidity (TURB), total dissolved solids (TDS), biological oxygen demand (BOD), chemical oxygen demand (COD), chloride, nitrate, fluoride, sodium and potassium were analyzed for the collected samples. The water quality index is calculated, to assess the quality of river water. The results obtained highlighted that Noyyal River was highly polluted due to domestic sewage, municipal wastes and industrial effluents. These findings suggest that the river water needs treatment before consumption.
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