MATEC Web Conf.
Volume 342, 20219th edition of the International Multidisciplinary Symposium “UNIVERSITARIA SIMPRO 2021”: Quality and Innovation in Education, Research and Industry – the Success Triangle for a Sustainable Economic, Social and Environmental Development”
|Number of page(s)||7|
|Section||Sustainable Environmental Engineering and Protection|
|Published online||20 July 2021|
Identification of pollution sources in closed mining sites with an Impact on the quality of surface water in the Brad area
University of Petrosani, Department of Environmental Engineering and Geology, University Street 20, Petrosani, Romania
2 Technical University of Cluj Napoca, Department of Environmental Engineering and Sustainable Development Entrepreneurship, Bd. Muncii 103-105 Cod 400641 Cluj-Napoca, Romania
3 National Commission for the Control of Nuclear Activity, B-dul. Libertatii, Nr. 14, Sector 5, Bucharest, Romania
* Corresponding author: firstname.lastname@example.org
Pollution caused by closed mining activities is particularly difficult to treat because it dates back a very long time. Water contamination results from large-scale disturbance of the land on which the underground exploitation of the useful mineral substance took place. Discharges from underground mines can be treated as diffuse point sources; water quality is due to reactions that occur in an area that can cover tens of square kilometres. The main sources are groundwater, which increases after the pumping is stopped, and tailings stored in dumps and tailings ponds. When the mine closes, the pumps are stopped and the groundwater level rises until it reaches the surface or discharges into the aquifers above. Although discharges from wells and galleries are often the most visible sources, surface activities such as mineral processing, tailings and waste disposal are also a significant source of pollution. The river is located on the Barza gold-silver ore mining operation took place. The runoff waters present in this perimeter can transport contaminated sediments, where the tailings dumps are washed away by precipitation. The paper aims to identify the sources of surface water pollution in the Barza closed mining site that influences the quality of surface water.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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