Overview
Contrada Mendolilli is a primary treatment plant serving Vittoria, Sicily, Italy. It discharges near the coast and serves a population of 54,000, with a designed capacity of 55,000 m³/day.
Contrada Mendolilli is a wastewater treatment plant located in Vittoria, in the province of Ragusa, Sicily, Italy. The plant serves a population of approximately 54,000 people and has a designed capacity of 55,000 cubic meters per day, indicating it is sized for a medium-to-large agglomeration. The plant provides primary treatment, which involves physical processes like sedimentation to remove solids. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations of this size (over 15,000 population equivalent) are generally required to have secondary treatment. However, primary treatment may be permitted in certain coastal areas with favorable dispersion conditions, subject to regulatory approval. The plant is located within 10 km of the coast, and its treated effluent likely discharges into the Mediterranean Sea via local waterways. The receiving environment is the Ionian Sea, which supports diverse marine life and is important for tourism and fisheries in the region. Proper treatment is critical to prevent nutrient pollution and protect coastal water quality.
Environmental context
The plant discharges into the Ionian Sea, part of the Mediterranean Sea, which is a semi-enclosed basin with limited water exchange. The coastal waters near Vittoria support seagrass meadows and marine biodiversity. Nutrient inputs from primary-treated effluent could contribute to eutrophication in sensitive coastal areas, making advanced treatment or nutrient removal important for ecological health.
Frequently asked questions
Contrada Mendolilli is located in Vittoria, in the province of Ragusa, Sicily, Italy. Its address is Via Girolamo Giardina, Vittoria, Ragusa, Sicilia, 97019.
The plant serves approximately 54,000 people, classifying it as a medium-to-large agglomeration under EU regulations.
The plant provides primary treatment and discharges treated effluent likely into the Ionian Sea via local coastal outfalls, as it is located within 10 km of the coast.
The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations over 15,000 population equivalent, though primary treatment may be allowed in coastal areas with adequate dispersion.
In Italy, plants serving over 15,000 population equivalent typically require secondary treatment under the EU UWWTD. For coastal plants, primary treatment may be permitted if it does not harm the environment, but nutrient removal is increasingly expected to protect the Mediterranean Sea.
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