Paper Title:Removal of Heavy Metals from Cooum River by Using Constructed Wetland

Abstract

The concentration of pollutant such as Heavy metals (Fe, Cu, Cd),Turbidity ,BOD, COD, Phosphate, TSS, TDS, Total Coliforms and Feacal coliforms. Constructed wetland system was operated for a period of 4.5 months with loading rate of 20L/day/m2. The achieved removal efficiencies for Cooum river water for Heavy metals (Fe, Cu, Cd), Turbidity, BOD, COD, Phosphate, TSS, TDS, Total Coliforms and Feacal coliforms were (100%, 100%, -), 96%, 58%, 53%, 100%, 42%, 24%, 99%, and 99% respectively. The achieved removal efficiencies for cooum river water spiked with heavy metal concentrations of 1mg/L for Heavy metals (Fe, Cu, Cd), Turbidity ,BOD, COD, Phosphate, TSS, TDS, Total Coliforms and Feacal coliform were (100%, 96%, 100%), 90%, 74% , 68%, 100%, 32%, 32%, 100% and 100% respectively. The achieved removal efficiencies for Cooum river water spiked with Heavy metal concentration of 5mg/L for Heavy metals (Fe, Cu, Cd), Turbidity, BOD, COD, Phosphate, TSS, TDS, Total Coliforms and Feacal coliform were (46%, 37%, 41%), 96%, 79%, 71%, 100%, 72% ,40%, 99% and 99% respectively. The optimum concentration of 2.5mg/L for 20 L/day/m2 with VFCW is proved better effective for the Heavy metal removal.


Keywords:Constructed wetland system, temperature, BOD, COD, Phosphate.