Overview
ARRONE wastewater treatment plant in Casteldilago, Umbria, Italy, serves 3,603 people with advanced treatment and a designed capacity of 4,000 m³/day, discharging 713.27 m³/day.
The ARRONE wastewater treatment plant is located in Casteldilago, a frazione of Arrone in the Umbria region of central Italy. The facility serves a population of approximately 3,603 people and is part of the municipal wastewater infrastructure for the Terni area. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 4,000 m³/day and an average discharge volume of 713.27 m³/day, the plant operates well within its capacity, ensuring effective treatment of wastewater. The treated effluent is discharged into the local water system, which ultimately drains into the Tiber River basin. The Tiber flows through Umbria and Lazio before reaching the Tyrrhenian Sea near Rome. The advanced treatment helps protect the sensitive aquatic ecosystems of the Tiber and its tributaries, supporting biodiversity and water quality in the region.
Environmental context
The plant discharges into the Tiber River basin, which flows through central Italy to the Tyrrhenian Sea. The Tiber supports diverse aquatic life and is an important ecological corridor. Advanced treatment at this plant helps reduce nutrient and pollutant loads, protecting downstream water quality and the marine environment of the Tyrrhenian Sea.
Frequently asked questions
The ARRONE plant is located on Strada Provinciale Arronese in Casteldilago, a frazione of Arrone, in the province of Terni, Umbria, Italy.
The plant serves a population of approximately 3,603 people in the Casteldilago and Arrone area.
The plant provides advanced treatment, which includes nutrient removal and disinfection, exceeding the secondary treatment standard required by the EU Urban Waste Water Treatment Directive.
Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations with a population equivalent (PE) between 2,000 and 10,000 are required to have secondary treatment. The ARRONE plant, serving 3,603 people, meets this requirement and goes further with advanced treatment.
The plant has a designed capacity of 4,000 m³/day, with an average discharge volume of 713.27 m³/day, indicating it operates well within its capacity.
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