Kyrgyz–Turkey Manas University, Bishkek, Kyrgyzstan:

K. A. Kozhobaev, Professor, Doctor of Engineering Sciences
N. E. Totubaeva, Associate Professor, Candidate of Biological Sciences, nurzat.totubaeva@manas.edu.kg
N. T. Shaikieva, Senior Lecturer, Candidate of Chemical Sciences

Naamatov Naryn State University, Naryn, Kyrgyzstan:
S. T. Otorova, Head of Department, Candidate of Engineering Science

On the evidence of the earlier research findings, as well as the full-scale and lab-scale test data of 2019–2020, this article describes the ecological situation at Kara-Keche lignite field being developed by five mining companies in the Jumgal district of the Naryn Region in the Kyrgyz Republic. It is found that the field development proceeds with insufficient adherence to legal documents and has a considerable adverse influence on the environment and water bodies. Many large-volume refuse dumps have no isolation from natural water bodies, which ends with acute pollution of the latter. Contamination of local rivers exists both below the coal mining sites and above them, because of winnowing of coal dust. The river water has the increased pollution indexes—the coliform indexes are 55–70, even in winter, and in summer, these indexes reach a few thousands units. The solid residue, suspended matters, chemical oxygen demand as well as the carbonate and total hardnesses at the points below the major pollution sources as against the averaged values at the points located above the pollution sources have very high values: 14% for the chemical oxygen demand; 43 for the dry residue; 86 and 35 for the carbonate and total hardness, respectively; 108 % for the suspended matter. The concentrations of all macro elements–cations (and anions) grow at a relatively small distance (~5 km) below the major pollution sources: by 11.2 % for sodium; 22 % for potassium 42.2 % for calcium and 79.9 % for magnesium. The analyses revealed no one of 22 trace elements (Ag, As, B, Be, Cd, Co, Cr, Cu, Hg, Mo, Ni, P, Pb, S, Sb, Se, Sn, Ti, U, V, W, Zn) in the Kara-Keche river water, supposedly, because of low sensitivity of the spectrometer. The concentrations of some trace elements (aluminum and barium) are noticeably lower (almost by 2 times) below the major pollution sources. The concentrations of the other trace elements at the points below the major pollution sources are higher than the averaged values at the points above the pollution sources: by 2.2 % for silicon; by 28.3 % for iron; by 76 % for strontium and by 83.4 % for lithium.

1. Beysebaev R. S. History of the fuel and energy sector of the Kyrgyz Republic in the years of independence in the context of cooperation with foreign countries (1991–2016) : Dissertation … of Doctor of Historical Sciences. Bishkek, 2019. 331 p.
2. Vinogradova L. I. Environmental problems in coal mining n the territory of the Republic of Khakassia. Current Problems of Land-Utilization, Cadasters and Nature Management : National Conference. Krasnoyarsk, 2019. pp. 52–56.
3. Galanina T. V., Baumgarten M. I., Koroleva T. G. Coal mining-disturbed land reclamation laws. GIAB. 2020. No. 6. pp. 15–26.
4. Zhusip Zh. A., Omarova A. V., Mirzadinov R. A. Coal combustion-induced pollution assessment in Almaty suburbs. Scientific Community of Students in the 21^st Century. Natural Sciences : XII International Conference Proceedings. Novosibirsk, 2013.
5. Kamchybekov D. K. Kyrgyzstan’s coal industry : Current condition and prospects. Bishkek : NASI, 2003. 248 p.
6. Kachurin N. M., Kovalev R. A., Sarychev V. I., Golovin K. A. Systems concept of evaluating environmental efficiency and safety of underground coal mining. Izvestiya Tulskogo gosudarstvennogo universiteta. Tekhnicheskie nauki. 2019. No. 7. pp. 312–319.
7. Kovalenko A. A. On the justification of the technology of open pit mining in high-mountain Kara-Keche coal mine. Part I. Geological characteristics of the deposit. Vestnik Kyrgyzsko-Rossiyskogo Slavyanskogo universiteta. 2009. Vol. 9, No. 11. pp. 111–117.
8. Kovalenko A. A. On the justification of the technology of open pit mining in high-mountain Kara-Keche coal mine. Part III. Mine development methods and tools. Vestnik Kyrgyzsko-Rossiyskogo Slavyanskogo universiteta. 2011. Vol. 11, No. 11. pp. 144–150.
9. Kojobaev K. A., Tazhibaev K. T., Tazhibaev D. K., Duisheev K. O. Kavak brown coal basin: Integrated development prospects and environmental problems. Gornyi Zhurnal. 2016. No. 8. pp. 66–71. DOI: 10.17580/gzh.2016.08.12
10. Kozhobaev K. A., Otorova S. T., Amanov K. A., Moldogazieva G. T., Kasiev A. K. The drinking water problem : A case-study of At-Bashy settlement in the Naryn Region. Vestnik Kyrgyzskogo gosudarstvennogo universiteta im. I. Arabaeva. 2011. No. 1. pp. 123–125.
11. Concept of development of energetics of the Kyrgyz Republic for the period till 2030. Bishkek : Ministry of Economics of Kyrgyz Republic, 2016. 48 p.
12. Kozhogulov K. Ch., Kamchybekov D. K., Abdibaitov Sh. A. Kavak coal field: state and ways of development. Izvestiya natsionalnoy akademii nauk Kyrgyzskoy respubliki. 2013. No. 2. pp. 21–25.
13. Nazarova N. I., Alybakova N. K. Kyrgyz coals and composition of their humic acids. Frunze : Ilim, 1976. 105 p.
14. Nazarova N. I. Quality characteristic of coal in Kyrgyzstan. Frunze : Ilim, 1970. 135 p.
15. Sarymsakov Sh. S., Afanasev V. A. Kyrgyz coal as a feedstock for the chemical industry. Moscow, 1982.
16. Solpuev T. S. Coal deposits of Kyrgyz Republic : Reference book. Bishkek : MinGeo KR, 1996. 606 p.
17. Khariovskiy A. A., Kalushev A. N., Vaseva V. N., Simanova E. I. Coal industry ecology: the state, problems, ways of solution. Vestnik nauchnogo tsentra po bezopasnosti rabot v ugolnoy promyshlennosti. 2018. No. 2. pp. 70–81.
18. Ali A., Strezov V., Davies P., Wright I. Environmental impact of coal mining and coal seam gas production on surface water quality in the Sydney basin, Australia. Environmental Monitoring and Assessment. 2017. Vol. 189, Iss. 8. 408. DOI: 10.1007/s10661-017-6110-4
19. Ang Li, Changkun Chen, Jie Chen, Peng Lei. Environmental investigation of pollutants in coal mine operation and waste dump area monitored in Ordos Region, China. RSC Advances. 2021. Vol. 11, Iss. 17. pp. 10340–10352.
20. Aparna Choudhury, Jiumoni Lahkar, Binoy Kumar Saikia, Anil Kumar Anil Singh, Channakeshavaiah Chikkaputtaiah et al. Strategies to address coal mine-created environmental issues and their feasibility study on northeastern coalfelds of Assam, India: a review. Environment, Development and Sustainability. 2021. Vol. 23, Iss. 7. pp. 9667–9709.
21. Niharranjan Mishra, Nabanita Das. Coal Mining and Local Environment: A Study in Talcher Coalfield of India. Air, Soil and Water Research. 2020. Vol. 10, Iss. 1. DOI: 10.1177/1178622117728913
22. Rofikoh Rokhim, Wardatul Adawiyah, Ruri Eka Fauziah Nasution. The negative impact of coal mining company on health, environment, climate change, economic sustainability and macroeconomic. Life Cycle Assessment as A Metric to Achieve Sustainable Development Goals : International Conference Series on Life Cycle Assessment. 2018. E3S Web of Conferences. 2018. Vol. 74. 01004. DOI: 10.1051/e3sconf/20187401004
23. Kojobaev K. A., Moldogazieva G. T., Totubaeva N. E., Otorova S. T. Mining-associated environmental problems in the Kyrgyz Republic. Gornyi Zhurnal. 2016. No. 8. pp. 32–37. DOI: 10.17580/gzh.2016.08.06
24. Kozhobaev K. A., Otorova S. T. About the possible role of anthropogenic factors in geochemistry of upper Naryn waters. Vestnik Kyrgyzskogo natsionalnogo universiteta imeni Zh. Balasagyna. Special issue of the proceedings of international conference. Bishkek, 2012. pp. 114–120.
25. Totubaeva N. E., Zhekshenaly kyzy G., Shayymbetova A. Effect of ash disposal areas on spreading of soil streptomyces. Microorganisms and Biosphere : International Symposium Proceedings. Bishkek, 2013.
26. Orellano P., Quaranta N., Reynoso J., Balbi B., Vasquez J. Effect of outdoor air pollution on asthma exacerbations in children and adults: Systematic review and multilevel meta-analysis. PLoS ONE. 2017. Vol. 12, Iss. 3. e0174050. DOI: 10.1371/journal.pone.0174050
27. Finkelman R. B., Wolfe A., Hendryx M. S. The future environmental and health impacts of coal. Energy Geoscience. 2021. Vol. 2, Iss. 2. pp. 99–112.
28. Fang Li, Xinju Li, Le Hou, Anran Shao. Impact of the Coal Mining on the Spatial Distribution of Potentially Toxic Metals in Farmland Tillage Soil. Scientific Reports. 2018. Vol. 8. 14925. DOI: 10.1038/s41598-018-33132-4