CASTEGNERO_VIA_FRASSENA Wastewater Treatment Plant, Villaganzerla, Veneto

CASTEGNERO_VIA_FRASSENA is an advanced wastewater treatment plant located in Villaganzerla, a frazione of Castegnero in the province of Vicenza, Veneto, Italy. The plant serves a population of 1,865, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients such as nitrogen and phosphorus. With a designed capacity of 2,000 m³/day and a current discharge volume of 369.20 m³/day, the facility operates well below its capacity, indicating room for future growth or seasonal variability. The treated effluent is discharged into local watercourses that ultimately drain into the Adriatic Sea via the Bacchiglione River basin. The Veneto region is characterized by intensive agriculture and urban development, making advanced nutrient removal critical to prevent eutrophication in the sensitive Adriatic coastal ecosystem.

The plant discharges into the Bacchiglione River basin, which flows through the Veneto plain and into the Adriatic Sea near Chioggia. The Adriatic Sea is a semi-enclosed basin with limited water exchange, making it sensitive to nutrient pollution from agricultural runoff and wastewater. Advanced treatment at this plant helps reduce nitrogen and phosphorus loads, protecting coastal water quality and supporting diverse marine life.