GEOCHEMICAL TRANSFORMATION OF ENVIRONMENTAL OBJECTS WITHIN SOLID WASTE LANDFILLS (ON THE EXAMPLE OF KYIV)

Geokhimiia tekhnogenezu Pub Date : 2021-12-25 DOI:10.15407/geotech2021.34.113

I. Kuraieva, T. Koshliakova, O. Azimov, K. Zlobina, D. Khrushchov

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引用次数: 1

Abstract

The presented research is devoted to the study of geochemical transformation of environmental key objects (soils, surface and groundwater) within the solid waste landfills. The object of the study is the one of the largest landfills for solid waste disposal in Ukraine – Kyiv landfill №5. The main factual material, which is the basis of the article, was obtained by the authors during a comprehensive field ecological and geochemical research in 2018-2020. The aim of the work was to determine the geochemical (in particular physical and chemical) features of soil sediments within the landfill, which made it possible to assess the protective properties of soils in relation to the impact of technogenic metals. The condition of surface waters (ponds within the landfill territory) and groundwater (wells in Pidhirtsi village) was also studied; the comparison of the main indicators of chemical composition with the maximum allowable concentrations determined by normative documents was performed. It was found that in the studied soils there is a high concentration of heavy metals associated with the fraction of easily exchangeable ions, as well as an increased content of water-soluble forms. The main migration forms of macro- and microelements in soil solutions have been established. It was found that free hydrated cations and metal-organic complexes are characteristic of heavy metals. For groundwater used for potable water consumption by the population of Pidhirtsi village, exceeding of maximum allowable concentrations were recorded for certain indicators, in particular for nitrates, as well as deviations from the established norms for Ba, SO4, Fe, Mn, Co, Ni, Mo, and Pb. The pond waters, located directly within the landfill territory, are characterized by significant deviations from the norm in terms of Fe, Mn, Ni, Ti, V, Cu and Zn. As a result of the study, it was found that within the landfill there are favorable conditions for the formation of mobile forms of toxic elements and their migration to surface and groundwater

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固体废物填埋场内环境物体的地球化学转化(以基辅为例)

本研究致力于研究固体废物填埋场内环境关键对象（土壤、地表水和地下水）的地球化学转化。研究对象是乌克兰最大的固体废物处理填埋场之一——基辅填埋场№5.主要事实材料是作者在2018-2020年的一次综合野外生态和地球化学研究中获得的，是本文的基础。这项工作的目的是确定垃圾填埋场内土壤沉积物的地球化学（特别是物理和化学）特征，从而有可能评估与技术成因金属影响有关的土壤保护特性。还研究了地表水（填埋区内的池塘）和地下水（Pidhirtsi村的水井）的状况；将化学成分的主要指标与规范性文件规定的最大允许浓度进行了比较。研究发现，在所研究的土壤中，与易交换离子部分有关的重金属浓度很高，水溶性形式的含量也增加了。建立了土壤溶液中宏、微量元素的主要迁移形式。研究发现，自由水合阳离子和金属有机配合物是重金属的特征。对于Pidhirtsi村居民用于饮用水消费的地下水，某些指标，特别是硝酸盐，超过了最大允许浓度，Ba、SO4、Fe、Mn、Co、Ni、Mo和Pb也偏离了既定标准。直接位于垃圾填埋场区域内的池塘水，其特征是Fe、Mn、Ni、Ti、V、Cu和Zn与正常值存在显著偏差。研究结果表明，在垃圾填埋场内，有利于形成可移动形式的有毒元素，并将其迁移到地表和地下水中

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Geokhimiia tekhnogenezu

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8 weeks