ROANA_LOC_ARMISTIZIO Wastewater Treatment Plant, Cesuna, Veneto, Italy

ROANA_LOC_ARMISTIZIO is a municipal wastewater treatment plant located in Cesuna, a frazione of Roana in the Veneto region of northern Italy. The plant serves a small population of 250 residents, reflecting its role in a rural or small community setting within the Vicenza province. The plant provides secondary treatment, which is the standard biological treatment stage required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations with a population equivalent (PE) between 2,000 and 10,000. Although this plant serves fewer than 2,000 PE, secondary treatment ensures effective removal of organic matter and suspended solids before discharge. The designed capacity is 400 m³/day, and the current discharge volume is 49.49 m³/day, indicating ample reserve capacity. The treated effluent is discharged into local watercourses that ultimately drain into the Brenta River basin and then into the Adriatic Sea. The plant's location in the Alpine foothills means it protects sensitive mountain streams and downstream aquatic habitats from nutrient pollution and organic loading.

The plant discharges into small streams that feed into the Brenta River, which flows southeast through the Veneto plain to the Adriatic Sea near Chioggia. The Brenta basin supports diverse aquatic life, including fish species such as brown trout and grayling, and provides irrigation water for agriculture. The plant's secondary treatment helps prevent eutrophication in the sensitive Adriatic coastal zone, where nutrient inputs can cause algal blooms and hypoxia.