Overview
CASALI is an advanced wastewater treatment plant in Sezze, Lazio, Italy, serving 4,000 people. It discharges 791.86 m³/day of treated effluent, operating under EU Urban Waste Water Treatment Directive standards.
CASALI is an advanced wastewater treatment plant located in Sezze Scalo, Sezze, in the Lazio region of Italy. The facility serves a population of approximately 4,000 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant is situated inland, more than 10 km from the coast, and its treated effluent is discharged into local water bodies. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU UWWTD for agglomerations of this size. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive water bodies. The plant has a designed capacity of 4,000 m³/day and currently discharges 791.86 m³/day of treated wastewater, indicating significant spare capacity. The treated effluent from CASALI ultimately drains into the Tyrrhenian Sea via the local river network. The Lazio region features several rivers and coastal lagoons that support diverse aquatic ecosystems. By providing advanced treatment, the plant helps reduce nutrient loading and protect downstream water quality, contributing to the ecological health of the Tyrrhenian Sea coastal zone.
Environmental context
The CASALI plant discharges treated wastewater into local watercourses that flow toward the Tyrrhenian Sea. The Lazio coastal region includes important marine and coastal habitats that support diverse aquatic life, including fish nurseries and migratory bird populations. Advanced treatment at this plant reduces nutrient and pollutant loads, helping to prevent eutrophication and maintain water quality in the downstream environment.
Frequently asked questions
The CASALI plant is located in Sezze Scalo, Sezze, in the province of Latina, Lazio region, Italy.
The plant serves a population of approximately 4,000 people, classifying it as a small agglomeration under EU regulations.
The plant discharges treated effluent into local watercourses that drain into the Tyrrhenian Sea. The discharge volume is 791.86 m³ per day.
The plant provides advanced treatment, which includes nutrient removal beyond secondary treatment. This is typical for plants in sensitive areas under the EU Urban Waste Water Treatment Directive.
As an Italian plant, CASALI operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations over 2,000 population equivalent, and advanced treatment in sensitive areas.
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