IDL_VAIANO Wastewater Treatment Plant, Montopoli in Val d'Arno, Tuscany

IDL_VAIANO is an advanced wastewater treatment plant located in Montopoli in Val d'Arno, in the Tuscany region of Italy. The plant serves a population equivalent of 2,503, classifying it as a small agglomeration under Italian and EU regulations. Its design capacity is 6,600 m³/day, with a current discharge volume of approximately 495.51 m³/day. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive receiving waters. The plant operates within the Italian regulatory framework, which implements the EU directive through national decrees. Treated effluent from IDL_VAIANO is discharged into the local water system, which ultimately drains into the Arno River basin. The Arno River flows through Tuscany and into the Tyrrhenian Sea near Pisa. The region's water bodies support diverse aquatic life and are important for agriculture and tourism. The plant's advanced treatment helps reduce nutrient loading and protect downstream ecosystems.

The plant discharges into the Arno River basin, which flows through Tuscany and empties into the Tyrrhenian Sea. The Arno River supports diverse aquatic ecosystems and is a vital water resource for the region. Advanced treatment at this plant helps minimize nutrient pollution, protecting downstream water quality and the sensitive coastal environment of the Tyrrhenian Sea.