Origin of shallow groundwater of Csepel Island (south of Budapest, Hungary, River Danube): isotopic and chemical approach

Fórizs, István; Berecz, T.; Molnár, Zs.; Süveges, Miklós

doi:10.1002/hyp.5971

Cited by 18 publications

(7 citation statements)

References 6 publications

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“…Amin and Campana1996, Maloszewski et al 2002, Fórizs et al 2005, isotope data were observed for several years with a sampling frequency of 1 week or 1 month, and the modelled mean transit times represented an average value for several years. As mentioned previously, only a short time span with frequent (daily or daily calculated) sampling could be modelled in the present study.…”

Section: Modelling Results and Discussionmentioning

confidence: 94%

“…The observation site (multiple collector well) is located very close (45 m) to the river bank, while the water level of the Danube is variable. Thus, the modelling of the isotope data was performed by selecting single oxygen-isotope peaks observed during "steady-state" water levels, instead of using the whole continuous time series as in case studies by Amin et al (1996), Maloszewski et al (2002) and Fórizs et al (2005). Every input/output oxygen-isotope peak was considered as an independent signal characterized by its own travel time, dispersion parameter and Danube water proportion.…”

Section: Introductionmentioning

confidence: 99%

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Transit time determination for a riverbank filtration system using oxygen isotope data and the lumped-parameter model

Kármán

Małoszewski

Deák³

et al. 2014

Hydrological Sciences Journal

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The mathematical description of the lumped-parameter Dispersion Model is presented, and its use for estimating transit time and proportion of river water in a riverbank filtration system on Szentendre Island (in the Danube River, Hungary) is assessed by applying stable oxygen isotope data. The modelling approach could only be used to analyse single oxygen-isotope peaks observed during a 6-month-long time series, because the mean input (Danube) concentration was very close to the output (well) concentration. The water level in the Danube varied, but the lumped-parameter approach is only applicable for steady-state conditions. Isotope data observed during quasi steady-state hydraulic conditions selected at medium and higher water levels were modelled. At low water levels the method could not be used because the 18 O content of the Danube water and of collector wells was similar.

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Section: Modelling Results and Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Transit time determination for a riverbank filtration system using oxygen isotope data and the lumped-parameter model

Kármán

Małoszewski

Deák³

et al. 2014

Hydrological Sciences Journal

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“…The infiltration of surface water to groundwater systems and water passage through the aquifer media causes improvements in water quality by a set of processes including: sorption, redox processes and biodegradation [3,4]. The mixing of bank filtrates with ambient, usually unpolluted groundwater, also takes place [5,6]. Nevertheless, the quality of bank filtrate is strongly dependent on surface water quality.…”

Section: Introductionmentioning

confidence: 99%

Migration of Pharmaceuticals from the Warta River to the Aquifer at a Riverbank Filtration Site in Krajkowo (Poland)

Kruć

Dragon

Górski

2019

Water

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Studies on the presence of pharmaceuticals in water were carried out on the riverbank filtration site, Krajkowo–Poznań (Poland). A preliminary investigation conducted in 3 sampling points showed the presence of pharmaceuticals in both surface water and bank filtrate. Based on the above, an extended analysis was made in July, August and October 2018 and included surface water and wells located at a different distance (5–250 m) and travel time (1–150 days) from source water (Warta River). Firstly, 75 compounds (antibiotics, anti-inflammatory and analgesic drugs, psychotropic drugs, x-ray agents and β-blockers) were tested and 25 of them were detected in the river or bank filtrate. The highest concentrations were observed in source water and then were reduced along the flow path. The sampling points located close to the river (<38 m) are characterized by low removal. Higher removal is visible in wells located 64–82 m away from the river, while 250 m from the river most compounds are completely attenuated. Carbamazepine, gabapentin, tramadol, oxypurinol, fluconazole, and lamotrigine are the most common compounds. Some of the tested parameters occur only in the river water, e.g., iopromide, diclofenac, iohexol, clindamycin, fexofenadine and valsartan. The research shows that at the site, a significant attenuation of pharmaceuticals can be achieved at travel times of 40–50 days and distances of 60–80 m, although higher values are ensured when the well is located more than 250 m away.

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“…First in the riverbed and then in the aquifer, the water undergoes combined physical, biological, and chemical processes such as dissolution, sorption, redox processes, and biodegradation [1]. Additionally, mixing with ambient groundwater usually occurs to some degree [2,3].…”

Section: Introductionmentioning

confidence: 99%

Removal of Natural Organic Matter and Organic Micropollutants during Riverbank Filtration in Krajkowo, Poland

Dragon

Górski

Kruć

et al. 2018

Water

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The aim of this article is to evaluate the removal of natural organic matter and micropollutants at a riverbank filtration site in Krajkowo, Poland, and its dependence on the distance between the wells and the river and related travel times. A high reduction in dissolved organic carbon (40–42%), chemical oxygen demand (65–70%), and colour (42–47%) was found in the riverbank filtration wells at a distance of 60–80 m from the river. A lower reduction in dissolved organic carbon (26%), chemical oxygen demand (42%), and colour (33%) was observed in a horizontal well. At greater distances of the wells from the river, the removal of pharmaceutical residues and pesticides was in the range of 52–66% and 55–66%, respectively. The highest removal of pharmaceutical residues and pesticides was found in a well located 250 m from the river and no micropollutants were detected in a well located 680 m from the river. The results provide evidence of the high efficacy of riverbank filtration for contaminant removal.

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Origin of shallow groundwater of Csepel Island (south of Budapest, Hungary, River Danube): isotopic and chemical approach

Cited by 18 publications

References 6 publications

Transit time determination for a riverbank filtration system using oxygen isotope data and the lumped-parameter model

Transit time determination for a riverbank filtration system using oxygen isotope data and the lumped-parameter model

Migration of Pharmaceuticals from the Warta River to the Aquifer at a Riverbank Filtration Site in Krajkowo (Poland)

Removal of Natural Organic Matter and Organic Micropollutants during Riverbank Filtration in Krajkowo, Poland

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