Overview
San Dorligo della Valle / Dolina wastewater treatment plant serves 2,470 people in Friuli-Venezia Giulia, Italy. It provides secondary treatment and discharges treated effluent near the Adriatic coast.
The San Dorligo della Valle / Dolina wastewater treatment plant is located in the municipality of San Dorligo della Valle / Dolina, in the Friuli-Venezia Giulia region of northeastern Italy, near the city of Trieste. The plant serves a population of approximately 2,470 and has a designed capacity of 2,700 cubic meters per day, with an average discharge volume of 488.97 cubic meters per day. As a secondary treatment facility, the plant meets the minimum treatment standards required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The directive mandates secondary treatment for all discharges from agglomerations with a population equivalent above 2,000, and this plant complies with that requirement. The plant is situated within 10 kilometers of the Adriatic Sea, making its discharge potentially influential on coastal water quality. The treated effluent likely flows into the Rosandra River or directly into the Gulf of Trieste, supporting the ecological health of the Adriatic coastal zone, which is important for tourism, fisheries, and marine biodiversity.
Environmental context
The plant discharges into the Rosandra River valley, which drains into the Gulf of Trieste in the northern Adriatic Sea. This coastal area is ecologically sensitive, supporting diverse marine life and serving as a habitat for migratory fish and bird species. The secondary treatment provided helps reduce nutrient loads and organic pollutants, protecting the Adriatic Sea from eutrophication and maintaining water quality for recreational and economic uses.
Frequently asked questions
The plant is located in San Dorligo della Valle / Dolina, in the province of Trieste, Friuli-Venezia Giulia, Italy, near the Adriatic coast.
The plant serves a population of approximately 2,470 people.
The plant provides secondary treatment and discharges treated effluent into the local water system, likely the Rosandra River or directly into the Gulf of Trieste, which flows into the Adriatic Sea.
Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations with a population equivalent above 2,000 must have secondary treatment. This plant, serving 2,470 people, meets that requirement.
In Italy, small to medium agglomerations typically employ secondary treatment, often using activated sludge or biological filters, to comply with EU standards and protect sensitive coastal waters.
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