Sant'Erasmo Punta Vela Wastewater Treatment Plant, Venice, Italy

Sant'Erasmo Punta Vela is an advanced wastewater treatment plant located on Sant'Erasmo Island in the Venetian Lagoon, part of the municipality of Venice, Veneto, Italy. The plant serves a small population of approximately 1,112 residents and visitors, reflecting the island's role as a agricultural and residential area within the Venice lagoon system. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. This level of treatment is typical for sensitive areas like the Venetian Lagoon, where nutrient loading can cause eutrophication. The plant has a designed capacity of 4,000 cubic meters per day, with a current discharge volume of about 220 cubic meters per day, indicating ample capacity for future growth. The treated effluent is discharged into the Venetian Lagoon, a shallow coastal lagoon connected to the Adriatic Sea. The lagoon is an ecologically sensitive environment that supports diverse aquatic life, including fish, birds, and seagrass meadows. The plant's advanced treatment helps protect this unique ecosystem from nutrient pollution and other contaminants.

The plant discharges into the Venetian Lagoon, which connects to the Adriatic Sea via the Lido, Malamocco, and Chioggia inlets. The lagoon is a shallow, brackish water body that supports extensive seagrass beds, salt marshes, and diverse fish and bird populations. Nutrient enrichment from wastewater can lead to algal blooms and oxygen depletion, making advanced treatment crucial for maintaining ecological balance.