Search results for "SANITARIA"
showing 10 items of 520 documents
Diffuse and concentrated pollution control at watershed-scale: an Italian case study
2008
THE IDENTIFIABILITY ANALYSIS FOR SETTING UP MEASURING CAMPAIGNS FOR INTEGRATED WATER QUALITY MODELLING
2010
Identifiability analysis enables one the quantification of the number of model parameters that can be assessed by calibration with respect to a data set. Such a methodology is based on the appraisal of sensitivity coefficients of the model parameters by means of Monte Carlo runs. By employing the Fisher Information Matrix, the methodology is able to gain insights with respect to the number of model parameters that can be reliably assessed. The paper presents a study where identifiability analysis is used as a tool for the setting up of measuring campaigns for integrated water quality modelling. The analysis has been applied to a real case study characterized by a partially urbanized catchme…
Planktothrix rubescens in freshwater reservoirs: remote sensing potentiality for mapping cell density
2012
Planktothrix rubescens is sadly famous for producing microcystins (MCs), which are powerful hepatotoxins. During the winter 2005/06, P. rubescens has been found in the Pozzillo, Nicoletti, Prizzi and Garcia reservoirs, Sicily; in 2008 it was also detected in SS. Trinita di Delia and Castello reservoirs. Indeed, during periods of low shortwave irradiance such as winter, when light weakly penetrates water column and the water cools, P. rubescens filaments float up to the surface, forming red-colored blooms. Ancillary meteorological measurements highlighted low air temperatures between two frosts in December 2007 and February 2008, with a simultaneous reduction in the incoming total solar radi…
Formation Of perched leachate zones in MSW landfill
2010
The paper presents a 1D mathematical model for the simulation of the percolation fluxes throughout a landfill for municipal solid waste (MSW). Specifically, the model is based on mass balance equations, that enable one to simulate the formation of perched leachate zones in a landfill for MSW. The model considers the landfill divided in several layers evaluating the in and out flow throughout each layer as well as the continuous moisture distribution. The infiltration flow is evaluated by means of the Darcy’s law for an unsaturated porous medium, while the moisture distribution evaluation has been carried out on the basis of the theory of the vertically distributed unsaturated flow. The solu…
Point and non-point pollution assessment for a receiving water body quality management
2008
EVALUATION OF DIFFUSE AND CONCENTRATED POLLUTION AT WATERSHED SCALE
2009
The study presents an integrated approach in order to analyse and quantify pollution dynamics at basin scale depending on concentrated and diffuse sources. More specifically, an integrated model for urban drainage system has been exploited in order to simulate the complex sewer network - wastewater treatment plant and receiving water body. Moreover, a quali-quantitative model has been developped in order to simulate the non-point sources pollutant (agricultural and zoo-technical) in term of water river discharges and nutrient, produced from the wash off of soils. Finally, different models have been coupled in order to reconstruct the whole pollutant load for the receiving water body and to …
Remote Sensing for Agriculture, Ecosystems, and Hydrology XIV
2012
Introduction - This proceedings volume contains papers presented during the conference on Remote Sensing for Agriculture, Ecosystems, and Hydrology XIV. The conference was part of the 19th International Symposium on Remote Sensing sponsored by SPIE - The International Society for Optical Engineering. The symposium was held at the Edinburgh International Conference Centre, Edinburgh, United Kingdom, from 24th to 26th of September 2012. The conference is dedicated to providing rapid dissemination of scientific and technical information, and attracted scientists and professionals from throughout Europe, Africa, Asia, and the Americas. More than 30 oral and 30 poster presentations were given, c…
Planktothrix rubescens in freshwater reservoirs: The Sentinel-2 potentiality for mapping phycocyanin concentration
2012
In December 2006 blooms of Planktothrix rubescens were found in the Prizzi reservoir in Sicily. P. rubescens is sadly famous for producing microcystins (MC), which are harmful hepatotoxins. Recently (2006) P. rubescens has been found in the Pozzillo, Nicoletti, Ancipa, Prizzi and Garcia reservoirs. This paper compares the optical properties of the water of an infested reservoir and those of a clear water reservoir. Furthermore it evaluates an empirical method based on bands product to evaluate the phycocyanin cell density from MODIS, Landsat ETM+ and Sentinel-2 images. Spectroradiometric field campaigns were carried out in February/March 2008 to quantify the spectral transparencies of two w…
VALUTAZIONE DEI CARICHI INQUINANTI DI ORIGINE DIFFUSA E CONCENTRATA A SCALA DI BACINO: APPLICAZIONE A UN CASO DI STUDIO SICILIANO
2010
Obiettivo della ricerca è stata la predisposizione di un modello di tipo integrato a scala di bacino al fine di ricostruire la dinamica dei carichi inquinanti concentrati di origine civile e produttiva e dei carichi diffusi di origine agricola e zootecnica, in osservanza dei nuovi criteri di gestione dei corpi idrici superficiali introdotti dalle normative nazionale ed europea (Direttiva UE 2000/60, D.lgs. 152/2006). Il modello messo a punto è stato applicato al bacino del fiume Nocella, ubicato in Sicilia e ritenuto un idoneo banco di prova in quanto recapito di numerosi scarichi in forma concentrata e diffusa. I primi derivano in modo continuo dagli impianti di depurazione a servizio di d…