Monitoring of Technogenic Contamination of Groundwater and Surface Water in the Zone of Influence of Uranium Tailings of the Pridneprovsky Chemical Plant (Kamyanske)

Tkachenko, E. Yu.; Skalskyy, A.; Bugai, D.O.; Lavrova, T.V.; Protsak, Valentyn; Kubko, Yu.I.; Ávila, R.; Zanoz, B.Yu.

doi:10.30836/igs.1025-6814.2020.3.206341

Cited by 5 publications

(2 citation statements)

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“…[3,4]. Раніше аналіз вмісту радіонуклідів уранового ряду, а також характеристик вмісту хімічними елементами підземних вод на майданчику колишнього ВО «ПХЗ» виконано у роботах [5,6,7,8].…”

Section: рис 1 картосхема проммайданчика колишнього во «пхз» (м кам'я...unclassified

“…Підземні води верхнього алювіального водоносного горизонту у межах колишнього промислового майданчика рухаються у напрямку зони нижньої тераси трансаквального ландшафту до їх розвантаження у заплаві р. Коноплянка, яка протікає на відстані 800-1000 м від хвостосховищ. Водоносний горизонт у межах тераси і схилів морфологічної будови правобережжя р. Дніпро характеризується відносно високими фільтраційними властивостями, що створює умови для відносно швидкого поширення ореолу забруднюючих речовин у напрямку р. Коноплянка (6-10 м/рік) [5,6].…”

Section: рис 1 картосхема проммайданчика колишнього во «пхз» (м кам'я...unclassified

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Assessment of Temporal and Space-Time Changes of Groundwater Chemical Composition at the “Рridniproivsky Chemical Plant” Uranium Production Legacy Site

Lavrova¹,

Korychenskyi²,

Voitsekhovych³

2022

HHH

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This study provides an analysis of data from long-term (2005-2021) observations of the chemical composition of groundwater in the impact zone of the former uranium ore processing enterprise (Production Union Prydniprovskyi Chemical Plant (PU “PChP”) in the city of Kamianske, in particular, areas of near-surface tailings of uranium ore processed residues (“Zapadnoe”, “Central Yar” and others). All tailings on the site of the former PU “PChP” were built without installation of anti-permeable barriers, and therefore under the influence of atmospheric precipitation, the water, formed in the tailings body, highly contaminated of uranium series radionuclides and residues of chemical reagents, can penetrate to the groundwater aquifers, with which they spread beyond the limits of their technological localization in tailings. In addition, the entire territory of the former industrial site of mining and chemical production “PChP” is a complex of former enterprises, septic tanks, production waste holding sites, warehouses of chemical reagents and residues of former production, which are also sources of man-made pollution of the territory and influence on chronic pollution of groundwater. Therefore, environmental monitoring programs in the impact zone of tailings impoundments included not only monitoring of indicators of the content of uranium series radionuclides in elements of the natural environment, but also studying of the chemical composition of waters. The analysis of observation data during the period from 2005 to 2021 was carried out in order to assess the extent of the spread of polluted waters beyond the limits of the location of the tailings ponds, to identify major macroions in the composition of groundwater as indicators for assessing the spread of the contamination plume beyond the boundaries of the tailings ponds, as well as to identify patterns of formation the groundwater quality within the site under the influence of man-made and natural factors. It is shown that the mineralization of groundwater, as well as its chemical composition, significantly changed as the sampling site moved away from the tailings. Changes in the chemical composition of water and the dominant content of the major macroions at different distances from the tailing’s ponds made it possible to determine the difference in the characteristics of the influence of infiltration waters from the source of the tailing’s ponds and scattered sources of pollution within the boundaries of the PChP site along the groundwater flow line. The main factors of uncertainty in the estimations of the formation of groundwater chemistry in the zone of the industrial complex are shown, which must be taken into account for the development of the network of monitoring observations.

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Section: рис 1 картосхема проммайданчика колишнього во «пхз» (м кам'я...unclassified

Assessment of Temporal and Space-Time Changes of Groundwater Chemical Composition at the “Рridniproivsky Chemical Plant” Uranium Production Legacy Site

Lavrova¹,

Korychenskyi²,

Voitsekhovych³

2022

HHH

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Uranium sorption from radioactive waste of uranium ore processing at Pridneprovsk Chemical Plant

2021

Geoteh. meh.

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Abstract. The research results were generalized regarding the possibility of uranium sorption from radioactive waste accumulated at Production Association “Pridneprovsky Chemical Plant” (PA PCP). The conceptual possibility was illustrated for sorption leaching of uranium from pulps produced by acidic leaching of radioactive waste dumped at Zapadnoye (Western) tailing impoundment using AMP anionite contained benzyl pyridinium functional groups (manufactured by Smoly State Enterprise). Uranium recovery was 70 % to 80 % during waste acidic leaching with the mixture of 15 % sulphuric and 1.5 % nitric acids. Application of sorption leaching allowed the recovery increase up to 15 %. Uranium recovery was assessed from upper ground and underground water of Centralny Yar tailing site using AM-p-2 strong base macroporous anionite (produced by Smoly SP) based on styrene-divinyl benzene copolymer with 2-hydroxyethyl-dimethylammonium functional groups. This tailing impoundment features acidic reaction of radioactive water since the pulp was almost not neutralized after ore processing. It poses an environmental hazard due to active uranium leaching from the tailing impoundment body and its ability to migrate into groundwater. It was found that the distribution factor may attain ~2 000 for uranium concentration 7 mg/l in interstitial water and 4 mg/l in underground water. Assessment results were given regarding uranium recovery from radioactively contaminated water accumulated in the basement of building No. 103 using phosphate cationite based on modified plant material. The building is extremely contaminated and of top-priority for treatment and further dismantling. Sorbent capacity by uranium achieved in static mode was ~20 mg/g with distribution factor ~4 800. The results obtained may be proposed as the reasoning for the method and technology intended to decontaminate polluted water before it would be pumped from underground rooms of building No. 103. The research performed has shown that application of sorption materials is the most expedient and promising method for selective uranium recovery when solving the problems of tailing site remediation and handling radioactive waste of the former Pridneprovsky Chemical Plant.

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Assessments of radiological and toxicological risks from the use of groundwater and surface water in the zone of influence of the uranium production legacy site

Zanoz¹,

Bugai²,

Koliabina³

et al. 2022

Nucl. Phys. At. Energy

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Radioactive and chemical contamination of groundwater and surface water (Konoplyanka and Dnipro Rivers) in the zone of influence of the soviet era uranium production legacy site - Prydniprovsky Chemical Plant (PChP, Kamianske) is a source of radiological and toxicological risks for the population. Modeled water use scenarios included drinking water consumption, crop irrigation, fishing, and usage of the river beaches for recreation. According to the assessment results, the radiological risks of water usage in current conditions are low. At the same time, a conservative assessment indicates potential future toxicological risks from uranium (use of groundwater for drinking) and from manganese (due to accumulation in river fish). In the long term, risks from groundwater may increase significantly due to the dispersion of contaminated groundwater plumes outside the industrial site, or due to unrestricted access of the population to the territory of the PChP. To reduce uncertainty in the risk assessment results, it is important to improve the groundwater monitoring network downstream from the PChP site and to collect site-specific data on manganese transfer coefficients to fish.

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Monitoring of Technogenic Contamination of Groundwater and Surface Water in the Zone of Influence of Uranium Tailings of the Pridneprovsky Chemical Plant (Kamyanske)

Cited by 5 publications

References 5 publications

Assessment of Temporal and Space-Time Changes of Groundwater Chemical Composition at the “Рridniproivsky Chemical Plant” Uranium Production Legacy Site

Assessment of Temporal and Space-Time Changes of Groundwater Chemical Composition at the “Рridniproivsky Chemical Plant” Uranium Production Legacy Site

Uranium sorption from radioactive waste of uranium ore processing at Pridneprovsk Chemical Plant

Assessments of radiological and toxicological risks from the use of groundwater and surface water in the zone of influence of the uranium production legacy site

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