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Environmental Earth Sciences

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01.11.2013 | Original Article

Effect of the dilution process on the attenuation of contaminants in aquifers

verfasst von: Manuela Lasagna, Domenico Antonio De Luca, Laura Debernardi, Paolo Clemente

Erschienen in: Environmental Earth Sciences | Ausgabe 6/2013

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Abstract

This paper discusses the effects of the dilution process on levels of aquifer contamination attenuation, developing analytical equations for application in theoretical and practical cases. The key finding is that, in aquifers, the dilution process causes a reduction of the contaminant concentration. Analytical equations for the assessment of the contaminant attenuation capacity, by means of the dilution process in an aquifer, are put forward. In particular, the attenuation of the contaminant concentration in an aquifer, and thus the dilution, is described by the volumetric flow rate per unit width perpendicular to the flow direction (q _u). Moreover, a classification of q _u was developed, considering six classes of attenuation capacity due to dilution. For the equations validation, nitrate contamination attenuation due to dilution was analysed in two sample areas in Piedmont (North-West Italy). The results confirmed the hypothesis, evidencing high nitrate concentrations in areas with low q _u values, connected to low dilution rate of the contaminant in the groundwater; vice versa, low nitrate concentrations were evidenced in areas with high q _u values, due to a high nitrate dilution rate.

Vorheriger Artikel Rough evaluation of the water-inflow discharge in abandoned mining tunnels using a simplified water balance model: the case of the Cogne iron mine (Aosta Valley, NW Italy)

Nächster Artikel Recent geomorphological changes of the middle and lower Calore River (Campania, Southern Italy)

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Titel: Effect of the dilution process on the attenuation of contaminants in aquifers
verfasst von: Manuela Lasagna
Domenico Antonio De Luca
Laura Debernardi
Paolo Clemente
Publikationsdatum: 01.11.2013
Verlag: Springer Berlin Heidelberg
Erschienen in: Environmental Earth Sciences / Ausgabe 6/2013
Print ISSN: 1866-6280
Elektronische ISSN: 1866-6299
DOI: https://doi.org/10.1007/s12665-013-2336-9

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