Regione Friuli-Venezia Giulia

Industrial Zone of Ponterosso (PN) test site

The test site is located in the Friuli-Venezia Giulia Region, in the municipality of San Vito al Tagliamento (PN), within the industrial zone of Ponterosso in the western Low Frulian Plain. The project goal in this test site is to develop methodologies to improve the quality of industrial treated wastewater, making it suitable for artificial recharge.
The surface area is characterised by predominantly gravel materials (GS) with a belt of sandy-gravel deposits (SG) which runs south to the finer silt and clayey (M) deposits. Based on data collected in the literature the permeability of gravel was evaluated to 5,0•10-1 - 3,0•10-1 m/s and the permeability of gravel sands to 3,0•10-2 - 4,0•10-3 m/s.
From a hydrogeological point of view the area is characterised by a superficial phreatic aquifer, which develops above the confined aquifer system of the Low Plains below, formed by a succession of artisan aquifers that reach a depth of more than 500 meters.

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Mereto di Tomba (UD) test site

The test site is located in the Friuli-Venezia Giulia Region, in the Mereto di Tomba (UD) municipality. The project goal in this site is to run artificial recharge tests in an infiltration pond with water derived from the Ledra Channel. The objective is to reduce the water table drop of the phreatic aquifer, that is evident from the analysis of the 50 years old time series of piezometer data of the High Plains on the left side of the Tagliamento.  In particular, in the area of Mereto di Tomba, the average water table drop is about 18 cm/year, corresponding to a loss of 19,2 * 106 m3/a. The surface area is characterized by gravel and sandy gravel with low silt content with an estimated permeability of 5 * 10-5 m/s, based on the collected bibliographical data.
The test site is located in the High Fruilian Plains which is, from a hydrogeological point of view, characterized by the presence of a phreatic aquifer; in the area of Mereto di Tomba proceeding southwards, the phreatic aquifer is confined with compact conglomerate levels originating local phenomena of overlapping aquifers.

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