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Bottom Sediments in a River Under Acid and Alkaline Wastewater Discharge

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Języki publikacji
EN
Abstrakty
EN
The drainage flows of metal loads into the drainage and infiltration waters of mine dumps of enterprises have a dramatic effect on small rivers in industrial regions. The paper considers the outcomes of geochemical monitoring of the Karagaily River and assesses the transformation of the acid-base conditions depending on the influence of the facilities of the enterprise. The results of engineering and environmental surveys, including sampling of bottom sediments, laboratory preparation, chemical elemental analysis of samples and X-ray diffraction analysis of mineral composition, were presented. A complex technogenic alkaline sorption-hydroxide barrier was found at the mixing point of acidic river waters (the influence of dump and quarry waters) and alkaline wastewater of treatment facilities, where the deposited iron hydroxide adsorbs ore minerals, which reduces their outflow into larger rivers and increases the self-purification potential of the river. Further interaction of iron hydroxide with the acid mine drainage and calcium bicarbonate of wastewater results in pyritization of bottom sediments. Excavation and dewatering of the pyrite-containing bottom sediments will allow their joint use with tailings and ore-processing waste for re-extraction useful components.
Twórcy
  • Department of Geoecology, Saint Petersburg Mining University, 2, 21st Line, St Petersburg 199106, Russia
  • Scientific and Educational Center for Collective Use of High-Tech Equipment, Saint Petersburg Mining University, 2, 21st Line, St Petersburg 199106, Russia
Bibliografia
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  • 4. Chukaeva, M.A., Povarov, V.G., Sverchkov, I.P. 2020. Iron-Containing Metalworking Wastes as a Chemosorbent for Wastewater Treatment from Molybdenum Ions. Moscow University Chemistry Bulletin, 75(1), 36-42.
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  • 10. Kremcheyev, E.A.; Nagornov, D.O.; Kremcheyeva, D.A. 2020. Changing hydraulic conductivity after rupturing native structure of peat under limited evaporation conditions. In: Processes and Phenomena on the Boundary Between Biogenic and Abiogenic Nature; Frank-Kamenetskaya, O.V., Vlasov, D.Yu., Panova, E.G., Lessovaia, S.N., Eds.; Springer: Cham, Switzerland, 233-256.
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  • 25. The Karagaily riverbed in Sibay is to be cleared and widened. Available online: http://www.bashinform.ru/news/668068-ruslo-reki-karagayly-v-sibae-raschistyat-i-rasshiryat (accessed on 05.05.2020).
Uwagi
Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-82a52597-3653-454d-b644-97cb0305664f
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