Overview
COLLEGNO wastewater treatment plant serves Rosta, Piemonte, Italy, with a population equivalent of 166,585. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations over 150,000 PE.
The COLLEGNO wastewater treatment plant is located in Rosta, a municipality in the Metropolitan City of Turin, within the Piemonte region of northwestern Italy. Serving a population equivalent of 166,585, it is classified as a large agglomeration under European Union regulations. The plant is part of the regional wastewater infrastructure managed by local authorities. As a large agglomeration, the plant is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary biological treatment as a minimum. For plants serving over 150,000 PE in sensitive areas, tertiary treatment may be mandated to reduce nutrients such as nitrogen and phosphorus. The regulatory framework ensures compliance with discharge standards. The treated effluent from the plant is discharged into the local water network, which ultimately drains into the Po River basin. The Po River is the longest river in Italy and flows into the Adriatic Sea, supporting diverse aquatic ecosystems and providing water for agriculture and industry. The plant plays a key role in protecting the water quality of the Po basin and the downstream marine environment.
Environmental context
The COLLEGNO plant discharges into the Po River basin, which flows eastward through northern Italy to the Adriatic Sea. The Po River supports a rich biodiversity, including fish species such as sturgeon and eel, and its delta is an ecologically sensitive area. The plant's operations help reduce nutrient and pollutant loads, safeguarding water quality for downstream communities and habitats.
Frequently asked questions
The COLLEGNO wastewater treatment plant is located at 7, Strada Comunale di Rivoli, Rosta, in the Metropolitan City of Turin, Piemonte region, Italy.
The plant serves a population equivalent of 166,585, classifying it as a large agglomeration under EU regulations.
The treated effluent is discharged into the local water network, which flows into the Po River basin and eventually reaches the Adriatic Sea.
As a large agglomeration serving over 150,000 PE, the plant is required to meet secondary treatment standards under Directive 91/271/EEC. In sensitive areas, additional nutrient removal may be required.
In Italy, plants of this scale typically employ secondary biological treatment, often with tertiary nutrient removal to comply with EU standards for sensitive areas like the Po River basin.
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