Improvement of the Mine Water Purification Efficiency via Modified Settling Tank

• Autorzy: Kovrov, Oleksandr , Kulikova, Daria
• Języki publikacji: EN

Abstrakty

EN

Coal mining technologies always lead to tremendous environmental pollution of air, water resources, lands and biodiversity, both in regional and global scale. The level of environmental safety and ecological quality of the coal-mining region significantly decreases due to mining operations. In particular, mine waters with solid particles and dissolved chemicals are discharged to surface reservoirs. The suspended substances of mine waters, both in solid and dissolved forms, pose a high threat for the ecological and chemical balance of natural waters. Due to the ability to adsorb heavy metals, they play a significant role in the pollution of nearby water bodies. Chemicals not only change the quality of water bodies, but also pose an increased environmental risk to aquatic organisms and the health of the population. The purpose of the paper was to revise the mine water drainage technological scheme of the "Stepova" coal mine, as the subdivision of the "DTEK Pavlogradvugillya" Public Joint-Stock Company (Ukraine), and justify the technical considerations concerning implementation of a horizontal settling tank with unique design. It is justified that such mechanical treatment facility with vertical perforated partitions will significantly improve the overall water quality and provide further treatment in the storage pond. The modeling of the mine water purification process for the conditions of the "Stepova" coal mine was carried out due to the investigation of the kinetics of suspended particles precipitation simulated under laboratory conditions. The obtained dependences allow selecting the most optimal design and technological parameters of the proposed settling tank of advanced design. The values of the expected technological parameters of the proposed settling tank were determined, namely the predicted value of mine water purification efficiency, approximate depth of particles sedimentation in the point of treated water removal from the settling tank, and the hydraulic size of suspended solids. It was established that the implementation of the proposed technological scheme of mine water purification will reduce the concentration of suspended solids to the normative concentrations allowed for discharge into surface water bodies.

Słowa kluczowe

EN

coal mine; mine water; suspended particles; settling tank; storage pond; hydraulic size; water purification efficiency

• Czasopismo: Ecological Engineering & Environmental Technology
• Rocznik: 2022
• Tom: Vol. 23, iss. 1
• Strony: 65--75
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Kovrov, Oleksandr

• Dnipro University of Technology, Department of Ecology and Technologies of Environmental Protection, Dmytro Yavornytskyi avenue 19., Dnipro 49005, Ukraine,

autor

Kulikova, Daria

• Dnipro University of Technology, Department of Ecology and Technologies of Environmental Protection, Dmytro Yavornytskyi avenue 19., Dnipro 49005, Ukraine

Bibliografia

• 1. Rules for protection of surface waters from return water pollution. 1999. Normative Regulation of the Cabinet of Ministers of Ukraine, 65. https://zakon.rada.gov.ua/laws/show/465-99-%D0%BF#Text. (in Ukrainian).
• 2. Kulikova A.A., Sergeeva Y.A., Ovchinnikova T.I., Khabarova E.I. 2020. Formation of mine water composition and analysis of treatment methods. MIAB. Mining Inf. Anal. Bull., 7, 135–145.
• 3. Kharitonov M.M., Anisimova L.B. 2013. Ecological assessment of surface waters quality for Dnipro river basin in Dnipropetrovsk region. Ecology and nature management, 17, 75–85.
• 4. Voitovych S.P. 2015. Geochemical features of groundwater and mine water in coal basins of Ukraine (evidence from Chervonohrad mining area and Central Donbass). Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, 2, 23–30.
• 5. Timukhin S.A., Ugol’nikov A.V., Dolganov A.V. 2014. Problems of design and operation of mine drainage complexes. News of the Ural State Mining University, 3(35), 68–73.
• 6. Gulko S.E., Gomal I.I. 2013. Analysis of composition and state of hydrotechnical buildings of coal mines. Journal of Donetsk mining institute, 1(32), 78–84.
• 7. State sanitary norms and rules "Permissible doses, concentrations, quantities and levels of pesticides in agricultural raw materials, food products, air of the working area, atmospheric air, water of reservoirs, soil" №137 dated of 20.09.2001 (DSanPiN 8.8.1.2.3.4–000–2001), 376. (in Ukrainian).
• 8. Rasputna T.A. 2011. Research of influence regularity by mining on water pond. The Journal of Zhytomyr State Technological University/Engineering, 3(58), 184–188.
• 9. Gorova A., Pavlychenko A., Kulyna S., Shkremetko O. 2013. The investigation of coal mines influence on ecological state of surface water bodies, Annual Scientific-Technical Collection Mining of Mineral Deposits. Leiden, The Netherlands: CRC Press /Balkema, 303–305.
• 10. Kroik A.A. 2014. Ecological safety of subterranean water on the territory of mining enterprises. Journal of Water Chemistry and Technology, 36(4), 198–202.
• 11. Gao P., Wang Yu., Zhang Z., Cao Yi., Liu Z., Zhang D. 2020. The general methods of mine water treatment in China. Desalination and water treatment, 202, 183–205.
• 12. KolesnykV., Kulіkova D., Kovrov S. 2013. In-stream settling tank for effective mine water clarification In: Annual Scientific-Technical Collection. Mining of Mineral Deposits. CRC Press/Balkema, Netherlands; Taylor & Fransis Group, London, UK, 285–289.
• 13. Kolesnyk V.Y., Kulikova D.V. 2013. Justification of quantity perforated partitions and intervals their placement in improved sedimentation tank of mine water. Naukovyi visnyk Natsionalnoho Hirnychoho Universytetu, 4, 92–98.
• 14. State building standard. Sewerage. External networks and facilities. The main provisions of the design. (DBN В.2.5–75:2013). Kyiv. Minregion Ukrainy, 223 (in Ukrainian).
• 15. Horova A.I., Kolesnyk V.Y., Kulikova D.V. 2012. Physical modeling of precipitation process of the suspended materials in physical model of sedimentation tank for mine water treatment. Naukovyi visnyk Natsionalnoho Hirnychoho Universytetu, 3, 92–98.

Identyfikatory

DOI

10.12912/27197050/142943