scholarly journals Long-term changes in the chemical composition of the water of the Inhulets and Saksahan rivers within the Kryvorizkyi Iron Ore Basin (1980–2020)

2021 ◽  
Vol 30 (3) ◽  
pp. 470-479
Author(s):  
V. K. Khilchevskyi ◽  
N. P. Sherstiuk
Keyword(s):  
Chemical Composition ◽  
River Water ◽  
Mine Water ◽  
Iron Ore ◽  
Mine Waters ◽  
Hydrochemical Regime ◽  
Underground Waters ◽  
Storage Pond ◽  
High Concentrations ◽  
Environmental Measures

The article presents the generalized results of chemical composition research of waters from Inhulets and Saksahan rivers on the territory adjacent to the Northern and Inhulets with pumping of underground waters (mine and quarry), which have an abnormal chemical composition, high mineralization and contain high concentrations of microcomponents. The following scheme of mine water utilization is used in the Kryvyi Rih iron ore basin: the mines of the northern part of Kryvbas discharge water into the tailings dam of Northern Iron Ore Dressing works (Northern GZK); mines of the southern part discharge mine waters into the storage pond of the Svistunov creek during the year, and in the winter its waters are discharged into the Inhulets River with subsequent washing of the river in the spring-summer period. Such treatment of mine and quarry waters has led to the formation of a hydrochemical anomaly on the territory of Northern GZK with the center in the tailings. The mineralization of water in the pond reaches 23 g / l (2020). There is a high content of microcomponents: lead, cadmium, vanadium, manganese, boron, bromine, nickel, mercury, thiocyanates. As a result, the mineralization of the Saksahan River water increases over time (up to 5.4 g / l), the content of microcomponents also increases and becomes quite high. Prolonged use of the Inhulets River for utilization of mine water from the Svistunov creek storage pond has led to a change in the type of water: instead of type II (river water), Inhulets water belongs to the type III (metamorphosed waters). There are no regularities in the change of chemical composition of water (hydrochemical regime) in Inhulets, which is a consequence of the introduction of the scheme "discharge – flushing" for the disposal of mine water. Among the microcomponents in the water of Inhulets there is an increased content of vanadium, boron and bromine (7–8 times), single excess of lead content. The analysis of equilibria in the carbonate-calcium system of the Inhulets and Saksahan rivers confirmed that the existing hydrochemical regime for the studied rivers is stationary, thus, the environmental measures implemented will not have rapid consequences.

scholarly journals Geochemistry of strontium in fresh underground waters of the Sredneobskoy basin (Tomsk region, Russia)

2019 ◽  
Vol 98 ◽  
pp. 01024
Author(s):  
Irina Ivanova
Keyword(s):  
Chemical Composition ◽  
Upper Cretaceous ◽  
Biologically Active ◽  
Strontium Content ◽  
Rock Interaction ◽  
Underground Waters ◽  
Tomsk Region ◽  
Resident Time ◽  
High Concentrations ◽  
Water Rock Interaction

In the central part of Western Siberia a study of the chemical composition of fresh underground waters in the upper 600 m of the Sredneobskoy artesian basin was carried out. It was shown that underground waters generally contain high concentrations of strontium. The minimum concentrations of Sr are typical for Neogene-Quaternary sediments (600 µg/L), maximum values in the waters of the Upper Cretaceous sediments (more than 1300 µg/L). The study of strontium accumulation mechanisms in drinking underground waters is undoubtedly an important issue, as strontium is a biologically active element. Especially dangerous is the consumption of underground waters with a calcium-strontium ratio less than 100, that is the hydrogeochemical precondition for Urov endemic (Kashin-Beck disease). According to the calcium/strontium ratios data waters of the Neogene-Quaternary and Paleogene sediments selected in the south-western part of the Tomsk region are unsuitable for drinking water supply. Underground waters are shown to be in equilibrium with Al and Fe hydroxides; Ca, Mg, Fe carbonates; and clay minerals, including ferruginous. Increased strontium content in aquifers is determined not only by the chemical composition of the water-bearing rocks, but also increasing resident time of water rock interaction.

scholarly journals DISTRIBUTION OF CHEMICAL COMPOSITION OF MINE WATERS IN THE EASTERN DONBASS

2018 ◽  
Author(s):  
А.И. Гавришин ◽  
В.Е. Борисова ◽  
Е.С. Торопова
Keyword(s):  
Spatial Analysis ◽  
Chemical Composition ◽  
Computer Technology ◽  
Mine Water ◽  
Mine Waters ◽  
Oxidation Processes ◽  
The Third ◽  
Water Education ◽  
Environmental Rehabilitation

Детальное изучение процесса изменения состава шахтных вод выполнено с помощью оригинальной технологии классификации многомерных наблюдений АГАТ-2. Обнаружено четыре главных направления изменения состава вод. После завершения ликвидации угольных шахт резко усилились процессы окисления и образования сульфатных вод первого направления, снизилось образование вод второго направления, полностью отсутствуют воды третьего направления, ослаблено четвертое направление. Происходит формирование мощных потоков загрязнения и возникает необходимость мероприятий по реабилитации окружающей среды в Восточном Донбассе. Выполнен пространственный анализ распределения состава шахтных вод на территории региона. A detailed study of the process of transformation of the whole mine water using computer technology classification of multivariate observations AGAT-2. Found the four main directions of changes in the composition of the waters. After completing the Elimination of coal mines have dramatically increased oxidation processes and formation of sulphate waters first destinations, decreased water education second, completely absent of water the third, diminished fourth direction. Is the formation of powerful streams of pollution and there is a need for environmental rehabilitation activities in the region of environment. Completed spatial analysis of distribution of composition of mine waters in the Eastern Donbass.

scholarly journals Research of migration of technogenic bottom sediments with application of modern geoinformation systems

2020 ◽  
Vol 26 (2) ◽  
pp. 201-211
Author(s):  
Nikolay Maksimovich ◽  
Olga Berezina ◽  
Olga Meshcheriakova ◽  
Artem Demenev
Keyword(s):  
Bottom Sediments ◽  
Field Studies ◽  
Coal Basin ◽  
Mine Waters ◽  
River Ecosystems ◽  
Waste Dumps ◽  
Acid Mine Waters ◽  
High Concentrations ◽  
Environmental Measures ◽  
And Migration

The study of the regularities of formation and migration of technogenic bottom sediments in river ecosystems of mining regions is an urgent area of works of domestic and foreign researchers in connection with the high need to reduce the anthropogenic impact on the natural components of the environment. This article is devoted to the problems of the migration of pollutants and the formation of technogenic bottom sediments in river ecosystems in the Kizel coal basin (Perm Region, Russia). The scale of the problem is determined by the existence of numerous sources containing extremely high concentrations of elements of the 1st, 2nd and 3rd hazard classes. The main sources of contaminants on the study area are acid mine waters discharged through former mines and springs, as well as effluents from waste dumps. These technogenic solutions are characterized by a multicomponent composition, in which high concentrations of the following elements (Fe, Al, Mn, Zn, Be, Cu, Pb, Cd et al.) are noted. Exceeding the MPC for some elements reaches hundreds and thousands of times; in all, according to various estimates, over 500 km of rivers are polluted in the territory of the former Kizel coal basin and in the zone of its influence. The article describes the characteristics of bottom sediments of the river Kos’va, one of the largest regional rivers, according to long-term observations from 1984–2018, field studies, as well as the use of GIS technologies and the created geo-ecological geoinformation system of the Kizel coal basin. Also, based on international experience, environmental measures were proposed to restore the river ecosystems of the territory.

scholarly journals The Effect Of Saline Mine Waters Discharge From Hard Coal Mine On The Ecological State Of The Vistula River

2014 ◽  
Vol 17 (2) ◽  
pp. 43-47
Author(s):  
Agnieszka POLICHT-LATAWIEC
Keyword(s):  
Water Quality ◽  
River Water ◽  
Coal Mine ◽  
Mine Water ◽  
Hard Coal ◽  
Mine Waters ◽  
Pollution Levels ◽  
Vistula River ◽  
Coal Mine Water ◽  
Contamination Levels

Abstract The aim of the study was to determine the influence of coal mine waters on water quality in the Vistula River. Water samples for laboratory analysis were collected in 2011 and 2012 on one kilometer long section of the river. Basic parameters were measured at the collection spot. The study asseses the dynamics of physicochemical water properties, fulfillment of the quality requirements necessary to introduce contaminated water into the river, water salinity, quality, and utility values. The study indicates that water quality of the Vistula River has been rapidly decreasing as a result of coal mine water introduction. Water becomes degraded, unfavourable for fish communities and unsuitable for use by people. Coal mine water contamination exceeds allowable pollution levels stated by legal regulations. Self-purification of the river is efficient as contamination levels decrease at the length of the examined section of the river.

scholarly journals Evaluation of chemical composition quality of surface water in the eastern Donbass

2019 ◽  
pp. 61-67
Author(s):  
A. I. Gavrishin
Keyword(s):  
Water Pollution ◽  
Chemical Composition ◽  
Surface Water ◽  
Computer Technology ◽  
Surface Waters ◽  
Mine Water ◽  
Digital Computer ◽  
Small Rivers ◽  
Mine Waters

The regularities in forming chemical composition of mine and surface waters in the Eastern Donbass were studied using the techniques of statistical estimation of component concentration distributions, the methods of assessing environment pollution, and the digital computer technology on multidimensional classification observations AGAT-2. The article shows that the mine water in the Eastern Donbass is a powerful source of polluting environment, causing serious ecological damage to the territory. Coal mine water contain a lot of dissolved substances up to 413 thousand t/year, among which macro components and various metals forming a significant part. The mean concentrations of most components in mine water hundreds times exceed the maximum allowable concentrations (MACs), and they exceed the maximum concentrations in thousands times. The surface water quality was analyzed in the region proceeding from the results of testing small rivers and streams. Using classification technologies, five genetic variants of surface waters were identified by the macrocomponents. The first option characterizes the initial phase of surface water formation outside the pollution impact. Other options reflect the growing degree of water pollution in the region. The distribution of genetic water variants was shown throughout the region. The calculation of surface water pollution by 20 components revealed the cumulative indicator of pollution to be equal to 108 corresponding to the emergency crisis category. About 65% components exceed MAC. Surface water classes uniform in the content of 15 metals were distinguished using the digital computer technology AGAT-2. A cumulative indicator of pollution varies from 27 to 65, which corresponds to a tense and emergency crisis situations. Therefore, mine waters pollute significantly the surface waters in the Eastern Donbass. Conclusion is made about the need for rehabilitation measures in order to improve the quality of surface waters in the region.

Performance Study of Some Reverse Osmosis Systems for Removal of Uranium and Total Dissolved Solids in Underground Waters of Punjab State, India

2014 ◽  
Vol 4 (2) ◽  
pp. 467-476
Author(s):  
Nisha Sharma ◽  
Jaspal Singh ◽  
Barjinder Kaur
Keyword(s):  
Drinking Water ◽  
Reverse Osmosis ◽  
State Government ◽  
Total Dissolved Solids ◽  
Internal Exposure ◽  
Drinking Water Source ◽  
Performance Study ◽  
Dissolved Solids ◽  
Underground Waters ◽  
High Concentrations

Radionuclides (uranium, thorium, radium, radon gas etc.) are found naturally in air, water, soil and rock. Everyday, we ingest and inhale these radionuclides through the air we breathe and through food and water we take. Out of the internal exposure via ingestion of radionuclides, water contributes the major portion. The natural radioactivity of water is due to the activity transfer from bed rock and soils. In our surveys carried out in the past few years, we have observed high concentrations of uranium and total dissolved solids (TDS) in drinking waters of some southern parts of Punjab State exceeding the safe limits recommended by national and international agencies. The main drinking water source is the underground water procured from different depths. Due to the highly saline taste, disorders in their digestive systems and other ailments, people are installing reverse osmosis (RO) systems in their houses. Some RO systems have been installed on commercial basis. The state government is also in the process of installing community RO systems at the village level. As high values of uranium are also undesired and may pose health hazards due to radioactivity and toxicity of uranium, we have conducted a survey in the field to study the performance of various RO systems for removal of uranium and TDS. Water samples from about forty RO systems from Faridkot, Mansa, Bathinda and Amritsar districts of Punjab State were collected and analyzed. Our results show that some RO systems are able to remove more than 99% of uranium in the underground waters used for drinking purposes. TDS values are also reduced considerably to the desired levels. So RO systems can be used to avoid the risk of unduly health problems posed by high concentrations of uranium and TDS in drinking water.

COASTAL AND ESTUARINE SEDIMENT DYNAMICS IN THE MEZEN BAY AND ESTUARIES MEZEN AND KULOY

2018 ◽  
Author(s):  
Н. Демиденко ◽  
N. Demidenko
Keyword(s):  
River Water ◽  
River Discharge ◽  
Sea Water ◽  
Sediment Dynamics ◽  
Estuarine Sediment ◽  
Sea Surface ◽  
Cross Sectional ◽  
Sand Waves ◽  
Tidal Estuaries ◽  
High Concentrations

In the Mezen bay and estuaries Mezen and Kuloy can be high concentrations of mud suspension there, involving the formation at times mobile suspensions and settled mud. Within estuaries the river water is mixed with the sea water by the action of tidal motions, by waves on the sea surface and by the river discharge forcing its way to the sea. Nearly all shallow tidal estuaries, where currents exceed about 1,0m s-1 and where sand is present, have sand waves. Sand waves have a variety of cross-sectional and plan forms.

scholarly journals Influencing Factors of the Mineral Carbonation Process of Iron Ore Mining Waste in Sequestering Atmospheric Carbon Dioxide

2021 ◽  
Vol 13 (4) ◽  
pp. 1866
Author(s):  
Noor Allesya Alis Ramli ◽  
Faradiella Mohd Kusin ◽  
Verma Loretta M. Molahid
Keyword(s):  
Carbon Dioxide ◽  
Particle Size ◽  
Chemical Composition ◽  
Iron Ore ◽  
Divalent Cations ◽  
Mining Industry ◽  
Mining Waste ◽  
Aluminum Silicate ◽  
Mineral Carbonation ◽  
Carbonation Process

Mining waste may contain potential minerals that can act as essential feedstock for long-term carbon sequestration through a mineral carbonation process. This study attempts to identify the mineralogical and chemical composition of iron ore mining waste alongside the effects of particle size, temperature, and pH on carbonation efficiency. The samples were found to be alkaline in nature (pH of 6.9–7.5) and contained small-sized particles of clay and silt, thus indicating their suitability for mineral carbonation reactions. Samples were composed of important silicate minerals needed for the formation of carbonates such as wollastonite, anorthite, diopside, perovskite, johannsenite, and magnesium aluminum silicate, and the Fe-bearing mineral magnetite. The presence of Fe2O3 (39.6–62.9%) and CaO (7.2–15.2%) indicated the potential of the waste to sequester carbon dioxide because these oxides are important divalent cations for mineral carbonation. The use of small-sized mine-waste particles enables the enhancement of carbonation efficiency, i.e., particles of <38 µm showed a greater extent of Fe and Ca carbonation efficiency (between 1.6–6.7%) compared to particles of <63 µm (0.9–5.7%) and 75 µm (0.7–6.0%). Increasing the reaction temperature from 80 °C to 150–200 °C resulted in a higher Fe and Ca carbonation efficiency of some samples between 0.9–5.8% and 0.8–4.0%, respectively. The effect of increasing the pH from 8–12 was notably observed in Fe carbonation efficiency of between 0.7–5.9% (pH 12) compared to 0.6–3.3% (pH 8). Ca carbonation efficiency was moderately observed (0.7–5.5%) as with the increasing pH between 8–10. Therefore, it has been evidenced that mineralogical and chemical composition were of great importance for the mineral carbonation process, and that the effects of particle size, pH, and temperature of iron mining waste were influential in determining carbonation efficiency. Findings would be beneficial for sustaining the mining industry while taking into account the issue of waste production in tackling the global carbon emission concerns.

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