Assessment of the deposition of polluted sediments transferred by a catastrophic flood and related changes in groundwater quality

Rudiš, Miroslav; Valenta, Petr; Valentová, Jana; Nol, Ondrej

doi:10.1016/j.jhydrol.2009.02.023

Cited by 10 publications

(5 citation statements)

References 2 publications

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“…Flood sediment used in the experiment contained high amounts of the analysed elements, which is typical for this type of mud. A study on fl ood deposits conducted in the Czech Republic [27] reported similar levels; with the exception of zinc whose amount did not exceed 369 mg/kg. In the studied model experiment a strong correlation was found between the G and GP in the case of calcium, in which the maximum concentration was noted on the 14th day of the experiment.…”

Section: Resultsmentioning

confidence: 71%

The Influence of Biomass Ash on the Migration of Heavy Metals in the Flooded Soil Profile - Model Experiment

Ciesielczuk¹,

Rosik-Dulewska²,

Kochanowska³

2014

Archives of Environmental Protection

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Soils that have been exposed to fl ood waters can be heavily polluted by inorganic and organic compounds. They are mainly compounds which appear in dissolved or suspended form fl owing together with heavily laden fl oodwater, as well as compounds created as a result of reactions in the soil profi le, mostly due to anaerobic transformation of organic matter. Heavy metals brought with fl ood waters are absorbed by the soil and also washed out from fl ood sediments by precipitation when the fl ood recedes. This paper presents the results of research on the effects of fertilization with ash from incineration or pyrolysis of biomass on the migration process of heavy metals (Zn, Cu, Cr, Ni, Pb, Cd, Mn) in the arable layer of soil. It has been shown that the metals in the fl ood sediment migrate actively in the soil profi le what leads to the enrichment of the soils, also in the case of the soil fertilization with biomass ash.

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Section: Resultsmentioning

confidence: 71%

The Influence of Biomass Ash on the Migration of Heavy Metals in the Flooded Soil Profile - Model Experiment

Ciesielczuk¹,

Rosik-Dulewska²,

Kochanowska³

2014

Archives of Environmental Protection

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“…It should be noted that if a flood flows into the reservoir several times in one season, the amount of muddy sediments will increase and the effect on the operational conditions of the reservoir will increase. In order to determine the current turbidity, water samples and sediment samples were taken using a rod bathometer from several walls of the entrance part of the Chartak reservoir basin [19,20]. The sampled streams are shown in the following spatial image of the reservoir (figure 3).…”

Section: Resultsmentioning

confidence: 99%

Analysis of fractional and chemical composition of chartak reservoir sludge sediments

Xoshimov

Qosimov

Ortikov

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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In the present era, when climate change has become a global problem, efficient use of water resources is becoming an important task. Natural field research was conducted in Chartak reservoir. In order to determine the amount of turbidity entering with the flow, the characteristic tributaries were determined along the length of the reservoir, and in each tributary, samples were taken using a bathometer at different times of the season and filtered in laboratory conditions. According to the analysis of the results, the average amount of incoming turbidity was 0.3-0.5 g/l, and the amount of outgoing turbidity was 0.05-0.08 g/l. Samples of the sediments that sank into the reservoir bowl were taken and their fractional and chemical composition was analyzed in the laboratory of “Gidroproekt” JSC. According to the fractional composition of muddy sediments, particles with a diameter of 1.0-0.5 mm are 13.98%, particles with a diameter of 0.5-0.25 mm are 11, 49%, particles with a diameter of 0.25-0.10 mm - 7.56%, particles with a diameter of 0.10-0.05mm - 10.48%, particles with a diameter of 0.05-0.01 mm - 26.8%, it was found that particles with a diameter of 0.01-0.005 mm make up 13.34%, and particles with a diameter of 0.005-0.002 mm make up 16.42%. If we pay attention to the distribution and share of sediments on the walls, 35-40% of particles with a large fraction (d=1.0-0.1 mm) and 50-60% are particles with a small fraction (d=0.05-0.001mm). It is based on the presence of particles rich in microelements useful for agricultural fields in sediments. If we pay attention to the distribution and share of sediments on the walls, 35-40% of particles with a large fraction (d=1.0-0.1 mm) and 50-60% are particles with a small fraction (d=0.05-0.001mm). It is based on the presence of particles rich in microelements useful for agricultural fields in sediments. If we pay attention to the distribution and share of sediments on the walls, 35-40% of particles with a large fraction (d=1.0-0.1 mm) and 50-60% are particles with a small fraction (d=0.05-0.001mm). It is based on the presence of particles rich in microelements useful for agricultural fields in sediments.

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“…Inundation during a flooding event can carry PTEs dissolved in rising groundwater and potentially contaminated suspended sediment from upstream overbanking water, depositing this onto the floodplain during a flood (Acreman et al, 2003;Bednářová et al, 2015;Du Laing et al, 2009;Gröngröft et al, 2005;Junk et al, 1989;Rudiš et al, 2009;Tockner and Stanford, 2002;Weber et al, 2009). Subsequently, this deposition of suspended riverine sediments/POM by flood water results in the floodplain topsoil becoming a sink for PTEs (Du Laing et al, 2009;Frohne et al, 2011;Nshimiyimana et al, 2014;Overesch et al, 2007;Rinklebe et al, 2007;Visser et al, 2012;Zhao and Marriott, 2013).…”

Section: Changes That Floodplain Soils Undergo During and After Inundationmentioning

confidence: 99%

The impact of increased flooding occurrence on the mobility of potentially toxic elements in floodplain soil – A review

Ponting

Kelly

Verhoef

et al. 2021

Science of The Total Environment

102

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The frequency and duration of flooding events are increasing due to land-use changes increasing runoff of precipitation, and climate change causing more intense rainfall events. Floodplain soils situated downstream of urban or industrial catchments, which were traditionally considered a sink of potentially toxic elements (PTEs) arriving from the river reach, may now become a source of legacy pollution to the surrounding environment if PTEs are mobilised by unprecedented flooding events.When a soil floods, the mobility of PTEs can increase or decrease due to the net effect of five key processes; (i) the soil redox potential decreases which can directly alter the speciation, and hence mobility, of redox sensitive PTEs (e.g. Cr, As), (ii) pH increases which usually decreases the mobility of metal cations (e.g. Cd 2+ , Cu 2+ , Ni 2+ , Pb 2+ , Zn 2+ ), (iii) dissolved organic matter (DOM) increases, which chelates and mobilises PTEs, (iv) Fe and Mn hydroxides undergo reductive dissolution, releasing adsorbed and co-precipitated PTEs, and (v) sulphate is reduced and PTEs are immobilised due to precipitation of metal sulphides. These factors may be independent mechanisms, but they interact with one another to affect the mobility of PTEs, meaning the effect of flooding on PTE mobility is not easy to predict. Many of the processes involved in mobilising PTEs are microbially mediated, temperature dependent and the kinetics are poorly understood.Soil mineralogy and texture are properties that change spatially and will affect how the mobility of PTEs in a specific soil may be impacted by flooding. As a result, knowledge based on one river catchment may not be particularly useful for predicting the impacts of flooding at another site. This review provides a critical discussion of the mechanisms controlling the mobility of PTEs in floodplain soils. It summarises current understanding, identifies limitations to existing knowledge, and highlights requirements for further research.

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Assessment of the deposition of polluted sediments transferred by a catastrophic flood and related changes in groundwater quality

Cited by 10 publications

References 2 publications

The Influence of Biomass Ash on the Migration of Heavy Metals in the Flooded Soil Profile - Model Experiment

The Influence of Biomass Ash on the Migration of Heavy Metals in the Flooded Soil Profile - Model Experiment

Analysis of fractional and chemical composition of chartak reservoir sludge sediments

The impact of increased flooding occurrence on the mobility of potentially toxic elements in floodplain soil – A review

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