Overview
Calciano CDA S. Angelo is a secondary treatment plant serving 900 people in Calciano, Basilicata, Italy. It discharges 178.17 m³/day of treated wastewater into local watercourses.
Calciano CDA S. Angelo is a wastewater treatment plant located in Calciano, a town in the Basilicata region of southern Italy. The plant serves a small population of 900 residents, reflecting the rural character of the area. It is situated along the Strada Provinciale Stazione di Calciano in the province of Matera. The facility provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations with a population equivalent between 2,000 and 10,000. Although the plant serves fewer than 2,000 people, it still meets a high level of treatment. The designed capacity is 1,000 m³/day, and current discharge volume is 178.17 m³/day, indicating ample reserve capacity. The treated effluent is discharged into local streams that eventually drain into the Ionian Sea via the Basento River or other nearby watercourses. This small plant plays a key role in protecting the region's water quality, particularly in the sensitive Mediterranean ecosystem where nutrient pollution can impact coastal waters.
Environmental context
The plant discharges into small streams in the Basilicata region, which flow toward the Ionian Sea. This coastal area supports diverse marine life and is important for local fisheries. The secondary treatment helps reduce organic load and nutrients, protecting downstream aquatic habitats from eutrophication.
Frequently asked questions
The plant is located on Strada Provinciale Stazione di Calciano in Calciano, in the province of Matera, Basilicata, Italy.
The plant serves a population of 900 people, typical of a small rural agglomeration in southern Italy.
The treated effluent is discharged into local streams that drain toward the Ionian Sea, likely via the Basento River basin.
The EU UWWTD requires secondary treatment for agglomerations above 2,000 population equivalent. Although this plant serves fewer than 2,000, it still provides secondary treatment, exceeding the minimum requirement for its size.
In Italy, small plants serving under 2,000 people often use secondary biological treatment, such as activated sludge or biofilters, to meet national water quality standards before discharge.
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