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Institutional Repository [SANDBOX]
Technical University of Crete
Technical University of Crete
EN
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EL
| URI | http://purl.tuc.gr/dl/dias/1DDF20B6-2C65-4AF8-8EFE-64E4D288F076 | - |
| Identifier | https://doi.org/10.1029/2006WR005643 | - |
| Language | en | - |
| Extent | 8 pages | en |
| Title | Fate and transport of pathogens in a fractured aquifer in the Salento area, Italy | en |
| Creator | Chrysikopoulos Constantinos | en |
| Creator | Χρυσικοπουλος Κωνσταντινος | el |
| Creator | Costantino Masciopinto | en |
| Creator | Rosanna La Mantia | en |
| Description | All the necessary parameters required for accurate description of the aquifer were determined by two tracer tests and 34 pumping tests. The spatial variability of the mean fracture aperture was evaluated with well-established geostatistical procedures. A numerical flow model was developed to determine the distribution of the piezometric heads throughout the aquifer for each realization of the fracture aperture field. Furthermore, a finite difference transport model was developed for the simulation of pathogen migration in the fractures based on the piezometric head distributions provided by the flow model. The pathogen concentration data, collected at sampling locations Well #1 and Well #2 during the winter of 2002 were adequately fitted by the transport model. The fitted model parameters include the longitudinal and transverse coefficients, the initial inactivation rate, and the pathogen resistivity coefficient. | en |
| Content Summary | This study investigates the fate and transport of pathogens introduced by artificial groundwater recharge at the Nardo` fractured aquifer in the Salento area, Italy. Wastewater effluents from a municipal treatment plant with known pathogen concentrations were injected into a sinkhole and the migration of pathogens in the fractured aquifer was monitored at six sampling wells. The fate of pathogens was quantified by a mathematical model describing colloid transport in a set of three-dimensional, parallel fractures with spatially variable aperture. The number of parallel fractures and their average fracture aperture were determined from appropriate field pumping and tracer tests. The aperture spatial distribution was described by an experimental semivariogram developed from available field data obtained from two tracer tests and 34 pumping tests. The experimental results suggest that for the municipal wastewater injected into the Nardo` aquifer the required most conservative set back distance for drinking wells should be over 8000 m. | en |
| Type of Item | Peer-Reviewed Journal Publication | en |
| Type of Item | Δημοσίευση σε Περιοδικό με Κριτές | el |
| License | http://creativecommons.org/licenses/by/4.0/ | en |
| Date of Item | 2015-09-20 | - |
| Date of Publication | 2008 | - |
| Bibliographic Citation | Masciopinto, C., R. La Mantia, C. V. Chrysikopoulos, "Fate and transport of pathogens in a fractured aquifer in the Salento area, Italy ", Water Resources Research (Impact Factor: 3.71). 01/2008; 440(1). | en |
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