ROWP SC APAVIL SA Sirineasa Wastewater Treatment Plant, Aricioaia, Romania

ROWP SC APAVIL SA Sirineasa is a municipal wastewater treatment plant located in Aricioaia, Șirineasa, Vâlcea County, Romania. The facility serves a small population of 197 residents, reflecting its role in a rural community. It operates under Romania's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which sets standards for collection and treatment. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. Its designed capacity is 3000 m³/day, though actual discharge volume is 22.80 m³/day, indicating significant spare capacity. For small agglomerations like this, the EU directive requires appropriate treatment to protect receiving waters. The treated effluent is discharged into local watercourses that eventually drain into the Olt River basin, part of the Danube River system. The plant helps protect downstream ecosystems, including the Danube Delta, a region of high ecological importance. Its operation supports local water quality and public health in the Vâlcea area.

The plant discharges into small streams that flow into the Olt River, a major tributary of the Danube. The Olt River supports diverse aquatic life and is an important corridor for migratory fish. Downstream, the Danube Delta is a vast wetland ecosystem that provides critical habitat for birds and fish. The plant's secondary treatment reduces organic pollution, helping to maintain water quality in this sensitive river basin.