Assessment of total mercury content in water of the Balkyldak Lake-reservoir, Pavlodar, Kazakhstan

8th International Conference on Environment Science and Engineering

生态环境科学

Korobeinyk, A.V.^1,2 ; Yapyiev, V.R.^1 ; Azat, S.^1 ; Inglezakis, V.J.^1

Environmental Science and Technology Group (ESTg), Chemical Engineering Department, School of Engineering, Nazarbayev University, Astana, Kazakhstan^1

O. O. Chuiko Institute of Surface Chemistry of NAS of Ukraine, Kyiv, Ukraine^2

关键词: Anthropogenic pollutants;    Chlor-alkali process;    Continental climate;    Continuous operation;    Environmental problems;    Mercury contamination;    Mercury pollution;    Wastewater ponds;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/167/1/012006/pdf
DOI  :  10.1088/1755-1315/167/1/012006

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This study aimed at determining the levels of total mercury in water samples collected in the vicinity of the Lake-reservoir Balkyldak in Pavlodar, Kazakhstan. Legacy of the chloralkali process in Pavlodar which involved the mercury cell method while producing a chlorine-free sodium hydroxide leads to serious environmental problems. At the time of the unit continuous operation in between 1971-1993 approximately 1000 metric tons of metallic mercury has been released into the wastewater holding pond at the chemical plant. For many years, mercury collected in the wastewater pond was a subject of the Kazakhstan sharply continental climate fluctuation and overflow to the Balkyldak Lake-reservoir, creating a significant mercury contamination issue for the whole region. Mercury emitted from industrial eluents in environment carries predominantly anthropogenic pollutants. Due to its natural cycle through atmosphere, water and soil in different forms prompts the widespread global mercury pollution. In present investigation, samples collected in a close proximity of the Balkyldak Lake were analyzed in respect to the geological location of collection.