Multivariate statistical analysis and numerical modelling for the hydrogeological and hydrochemical characterization of a closed MSW landfill: the case study of Vizzolo-Predabissi


Submitted: 31 October 2019
Accepted: 17 March 2020
Published: 30 March 2020
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Authors

  • Letizia Fumagalli Dipartimento di Scienze dell'Ambiente e della Terra, Università degli Studi di Milano-Bicocca, Milano, Italy.
  • Gennaro Alberto Stefania Dipartimento di Scienze dell'Ambiente e della Terra, Università degli Studi di Milano-Bicocca, Milano, Italy.
  • Chiara Zanotti Dipartimento di Scienze dell'Ambiente e della Terra, Università degli Studi di Milano-Bicocca, Milano, Italy.
  • Davide Sartirana Dipartimento di Scienze dell'Ambiente e della Terra, Università degli Studi di Milano-Bicocca, Milano, Italy.
  • Giuseppe Raffaello Di Martino Cem Ambiente S.p.a., Cavenago Brianza (MB), Italy.
  • Antonella Perosa Città metropolitana di Milano, Area Ambiente, Settore Rifiuti e bonifiche, Servizio Coordinamento Tecnico Rifiuti, Milano, Italy.
  • Piergiorgio Valentini Città metropolitana di Milano, Area Ambiente, Settore Rifiuti e bonifiche, Servizio Coordinamento Tecnico Rifiuti, Milano, Italy.
  • Marco Rotiroti Dipartimento di Scienze dell'Ambiente e della Terra, Università degli Studi di Milano-Bicocca, Milano, Italy.
  • Tullia Bonomi Dipartimento di Scienze dell'Ambiente e della Terra, Università degli Studi di Milano-Bicocca, Milano, Italy.

This work aims at assessing the impact on groundwater resources of a leachate overflow occurred in the landfill of Vizzolo-Predabissi (Milan, Italy) after its closure. Hydrogeological sections, piezometric maps, spatio-temporal and multivariate analysis of hydrochemical data enabled to define a conceptual model and to build a groundwater flow model, solved and calibrated by means of MODFLOW-NWT and PEST. The results of the study pointed out that the leachate overflow produced an impulsive contamination, currently in attenuation, which behaved differently in areas with different redox characteristics.


Fumagalli, L., Stefania, G. A., Zanotti, C., Sartirana, D., Di Martino, G. R., Perosa, A., Valentini, P., Rotiroti, M., & Bonomi, T. (2020). Multivariate statistical analysis and numerical modelling for the hydrogeological and hydrochemical characterization of a closed MSW landfill: the case study of Vizzolo-Predabissi. Acque Sotterranee - Italian Journal of Groundwater, 9(1). https://doi.org/10.7343/as-2020-431

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