San Daniele Tiro a Segno Wastewater Treatment Plant, San Daniele del Friuli, Italy

San Daniele Tiro a Segno is a municipal wastewater treatment plant located in San Daniele del Friuli, in the Friuli-Venezia Giulia region of northeastern Italy. The plant serves a small population of 121 residents, reflecting its role in a rural or small-town setting. It operates under Italy's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant provides secondary treatment, which is the standard required by the EU directive for agglomerations of this size. It has a designed capacity of 1,100 m³/day and currently discharges 264 m³/day of treated wastewater. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The treated effluent is discharged into local watercourses that eventually drain into the Adriatic Sea via the Tagliamento River or other nearby rivers. The region is known for its agricultural landscape and proximity to the Alps, and the plant helps protect local water quality and downstream ecosystems.

The plant discharges into the local drainage network that feeds into the Tagliamento River basin, one of the last morphologically intact river systems in the Alps. The Tagliamento flows into the Gulf of Venice in the Adriatic Sea. The area supports diverse aquatic habitats and is important for migratory fish species. The secondary treatment provided by the plant helps reduce nutrient and organic pollution, safeguarding the ecological health of the downstream river and coastal waters.