Impacts of Heavy Metal Enriched Tailings of Magnesite Mine on Surrounding Water Reservoirs Service Unavailable

The prime aim of this study was to assess the physicochemical properties of water reservoir from magnesite mine surrounding four sites (each direction) on three seasons such summer, winter, and rainy season. The results attained from the physicochemical analysis states that all the surrounding water reservoir samples have been severely polluted by both essential and non-essential elements. Predominantly the water sample taken from the site I of three seasons has been severely affected by the metal pollutants. The site I water sample unacceptable (mg L-۱) physicochemical properties such as turbidity (۱۶.۲۰±۱.۳; ۱۵.۲۳±۱.۸; ۱۸.۲۹±۱.۵), conductivity (۲۷۴۲.۳۰±۲.۷; ۲۶۵۲.۲۴±۲.۱; ۲۷۸۵.۲۵±۲.۱), TDS (۲۰۸۵.۱۳±۴.۳; ۲۰۲۴.۱۵±۲.۱; ۲۱۱۳.۱۰±۱.۲), TSS (۷۱۲.۲۱±۲.۱; ۶۹۲.۳۱±۱.۱۲; ۷۱۱.۱۲±۱.۵), hardness (۷۶۵.۳۸±۲.۴; ۷۳۸.۶۵±۲.۱; ۷۸۱.۲۳±۲.۹), BOD (۲۰۸.۱۲±۱.۷; ۲۰۱.۳۱±۱.۲; ۲۱۲.۳۱±۱.۵), COD (۳۱۲.۷۴±۰.۹۸; ۳۰۱.۵۴±۱.۲۱; ۳۰۷.۷۲۱±۱.۵۱), DO (۱.۱۲±.۳۹; ۱.۰۱±.۲۸; ۱.۰۲±۰.۲۳), Ca (۲۶۵.۲۸±۱.۲۱; ۲۵۲.۱۴±۱.۳۴; ۲۷۵.۳۴±۱.۱۷), Mg (۱۲۴.۵۶±۱.۵۴; ۱۱۷.۳۲±۱.۲۸; ۱۳۵.۲۸±۱.۶۲), Cl (۱۲۴۸.۶۴±۲.۶۹; ۱۲۰۳.۱۷±۲.۱۸; ۱۳۵۱.۲۱±۱.۳۴), Zn (۷۵.۶۱±۱.۸۵; ۷۱.۵۲±۱.۰۲; ۷۸.۳۲±۱.۲۱), Cd (۲۴.۵۴±۰.۸۴; ۲۱.۲۸±۰.۶۱; ۲۶.۲۵±۰.۷۱), Pb (۱۱.۵۲±۰.۹۵; ۸.۲±۰.۵۲; ۱۲.۳۵±۰.۵۲), and Cr (۳.۱±۰.۰۵۴; ۲.۹±۰.۰۶۳; ۳.۵±۰.۲۱) contents of summer, winter, and rainy season correspondingly. Among these three seasons, the water sample collected during rainy season possesses more quantity metals than other seasons. These results confirmed that the metal contamination has been spreading from the abandoned magnesite mine tailing. These unacceptable physicochemical properties could cause severe ecological damage to the water ecosystem.The prime aim of this study was to assess the physicochemical properties of water reservoir from magnesite mine surrounding four sites (each direction) on three seasons such summer, winter, and rainy season. The results attained from the physicochemical analysis states that all the surrounding water reservoir samples have been severely polluted by both essential and non-essential elements. Predominantly the water sample taken from the site I of three seasons has been severely affected by the metal pollutants. The site I water sample unacceptable (mg L-۱) physicochemical properties such as turbidity (۱۶.۲۰±۱.۳; ۱۵.۲۳±۱.۸; ۱۸.۲۹±۱.۵), conductivity (۲۷۴۲.۳۰±۲.۷; ۲۶۵۲.۲۴±۲.۱; ۲۷۸۵.۲۵±۲.۱), TDS (۲۰۸۵.۱۳±۴.۳; ۲۰۲۴.۱۵±۲.۱; ۲۱۱۳.۱۰±۱.۲), TSS (۷۱۲.۲۱±۲.۱; ۶۹۲.۳۱±۱.۱۲; ۷۱۱.۱۲±۱.۵), hardness (۷۶۵.۳۸±۲.۴; ۷۳۸.۶۵±۲.۱; ۷۸۱.۲۳±۲.۹), BOD (۲۰۸.۱۲±۱.۷; ۲۰۱.۳۱±۱.۲; ۲۱۲.۳۱±۱.۵), COD (۳۱۲.۷۴±۰.۹۸; ۳۰۱.۵۴±۱.۲۱; ۳۰۷.۷۲۱±۱.۵۱), DO (۱.۱۲±.۳۹; ۱.۰۱±.۲۸; ۱.۰۲±۰.۲۳), Ca (۲۶۵.۲۸±۱.۲۱; ۲۵۲.۱۴±۱.۳۴; ۲۷۵.۳۴±۱.۱۷), Mg (۱۲۴.۵۶±۱.۵۴; ۱۱۷.۳۲±۱.۲۸; ۱۳۵.۲۸±۱.۶۲), Cl (۱۲۴۸.۶۴±۲.۶۹; ۱۲۰۳.۱۷±۲.۱۸; ۱۳۵۱.۲۱±۱.۳۴), Zn (۷۵.۶۱±۱.۸۵; ۷۱.۵۲±۱.۰۲; ۷۸.۳۲±۱.۲۱), Cd (۲۴.۵۴±۰.۸۴; ۲۱.۲۸±۰.۶۱; ۲۶.۲۵±۰.۷۱), Pb (۱۱.۵۲±۰.۹۵; ۸.۲±۰.۵۲; ۱۲.۳۵±۰.۵۲), and Cr (۳.۱±۰.۰۵۴; ۲.۹±۰.۰۶۳; ۳.۵±۰.۲۱) contents of summer, winter, and rainy season correspondingly. Among these three seasons, the water sample collected during rainy season possesses more quantity metals than other seasons. These results confirmed that the metal contamination has been spreading from the abandoned magnesite mine tailing. These unacceptable physicochemical properties could cause severe ecological damage to the water ecosystem.

کلیدواژه ها:

Mine tailing ، Water reservoir ، Metal pollution ، Spreading ، Permissible limit