Overview
ROWP Compania de Apa Oradea Statia de epurare Oradea is a major wastewater treatment plant serving Sântandrei, Romania. It handles a population equivalent of 236,750, operating under EU Urban Waste Water Treatment Directive standards.
ROWP Compania de Apa Oradea Statia de epurare Oradea is a large municipal wastewater treatment plant located in Sântandrei, near Oradea in Bihor County, Romania. Serving a population equivalent of 236,750, it is classified as a large agglomeration under EU regulations, requiring advanced treatment to protect sensitive receiving waters. As a plant of this scale in Romania, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment as a minimum and tertiary treatment for discharges into sensitive areas. The plant's treatment processes are designed to meet these stringent standards, ensuring compliance with national and EU water quality objectives. The treated effluent is discharged into the Crișul Repede River, which flows through Oradea and eventually joins the Crișul Negru before reaching the Tisza River and ultimately the Danube River basin. This downstream pathway highlights the plant's role in protecting the ecological health of the Tisza-Danube system, which supports diverse aquatic life and is vital for regional water resources.
Environmental context
The plant discharges into the Crișul Repede River, a tributary of the Tisza River, which flows into the Danube River and finally the Black Sea. The Crișul Repede supports a variety of fish species and provides habitat for migratory birds. The downstream Tisza-Danube system is ecologically sensitive, with wetlands and floodplains that require protection from nutrient pollution and other contaminants.
Frequently asked questions
The plant is located in Sântandrei, near Oradea, in Bihor County, Romania, along the DEx Oradea-Arad highway.
The plant serves a population equivalent of 236,750, making it a large agglomeration under EU classification.
Treated wastewater is discharged into the Crișul Repede River, which flows into the Tisza River and eventually the Danube River basin.
As a large agglomeration serving over 150,000 PE, the plant is required to provide secondary treatment and, if discharging into sensitive areas, tertiary treatment to remove nutrients.
Plants of this scale in Romania typically employ activated sludge processes with biological nutrient removal to meet EU standards for nitrogen and phosphorus removal.
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