Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Pathogen fate and transport in a fractured aquifer at Salento, Italy |
| Abstract | The fate and transport of pathogens introduced by artificial groundwater recharge at the Nardò fractured aquifer in Salento, Italy is investigated. 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 three 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. Pathogen inactivation rates were determined to be smaller than 0.15 d-1 and temperature dependent. The experimental results suggest that for the municipal wastewater injected into the Nardò aquifer the required set back distance for drinking wells should be over 3200 m. |
| Source | American Geophysical Union (AGU) Fall Meeting, San Francisco, December 11-15 |
| Keywords | Pathogen transportVirus inactivationWastewater injectionFractured mediaField scale. |
| Year | 2006 |
| Type | Poster |
| Authors | Costantino Masciopinto and Constantinos V. Chrysikopoulos |
| Text | 236499 2006 Pathogen transport Virus inactivation Wastewater injection Fractured media Field scale. Pathogen fate and transport in a fractured aquifer at Salento, Italy Costantino Masciopinto and Constantinos V. Chrysikopoulos Consiglio Nazionale delle Ricerche, Istituto di Ricerca sulle Acque,Reparto di Chimica e Tecnologia delle Acque, Via Francesco De Blasio, 5, 70123 Bari, Italy. Department of Civil Engineering, University of Patras, Patras 26500, Greece. The fate and transport of pathogens introduced by artificial groundwater recharge at the Nardo fractured aquifer in Salento, Italy is investigated. 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 three 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. Pathogen inactivation rates were determined to be smaller than 0.15 d 1 and temperature dependent. The experimental results suggest that for the municipal wastewater injected into the Nardo aquifer the required set back distance for drinking wells should be over 3200 m. American Geophysical Union AGU Fall Meeting San Francisco December 11 15 Internazionale Poster costantino.masciopinto MASCIOPINTO COSTANTINO |