Effect on Humans due to Deposition of Heavy Metals in Weras River and Remediation Techniques

Abstract

This study was carried out to determine the deposition of heavy metals in Weras River and how in turn these metals would affect the lives of people. Heavy metals enter Weras River by natural and anthropogenic activities. Excess accumulation of heavy metals such as Pb, Hg, Cd, Cr, Zn and Cu can cause severe problems in living organisms. To ascertain the harmful effects on humans due to heavy metals deposited in Weras River, water samples were collected from the river, tested, and analysed. Lead concentration exceeded the safety standard specified for aquatic life and, zinc concentration increased over the past years. Through this study the level of contamination of water in Weras River was determined intending to emphasize the harmful effects of heavy metals on humans and to minimize diseases and complications caused by it as there is a serious effect on the long run if heavy metal contamination of water in Weras River is not remediated. Due to the severity of heavy metal contamination in Weras River treatment methods were suggested and a mathematical model to predict heavy metal concentrations in Weras River was developed.