Overview
ETE Icarai Niteroi is a municipal wastewater treatment plant serving Niterói, Rio de Janeiro, Brazil. It treats wastewater from approximately 275,555 people in the São Francisco region.
ETE Icarai Niteroi is a municipal wastewater treatment plant located in the São Francisco neighborhood of Niterói, Rio de Janeiro, Brazil. The plant serves a population of approximately 275,555 people, making it a large agglomeration under Brazilian regulatory frameworks. It is situated in the Região Metropolitana do Rio de Janeiro, a densely populated coastal region. As a large-scale plant in Brazil, ETE Icarai Niteroi is subject to national environmental regulations, including CONAMA resolutions that set discharge standards for wastewater treatment. Plants of this size are typically expected to provide at least secondary treatment to protect receiving water bodies. The designed capacity is 1.00 cubic meter per second, indicating a substantial infrastructure investment. The plant discharges treated effluent into the waters of Guanabara Bay, a major estuarine system on the southeastern coast of Brazil. Guanabara Bay is ecologically significant, supporting diverse aquatic life and serving as a critical habitat for fish and crustaceans. The bay ultimately connects to the Atlantic Ocean. The plant's operation is vital for reducing pollution loads in this heavily urbanized watershed.
Environmental context
The plant discharges into Guanabara Bay, a large estuarine system that receives drainage from multiple rivers in the Rio de Janeiro metropolitan area. The bay supports diverse aquatic life, including fish, crustaceans, and migratory birds, and is an important ecological corridor. Treated effluent from the plant helps mitigate nutrient and pathogen loads, protecting the bay's water quality and downstream coastal ecosystems in the Atlantic Ocean.
Frequently asked questions
ETE Icarai Niteroi is located in the São Francisco neighborhood of Niterói, in the state of Rio de Janeiro, Brazil. It serves the Praias da Baía region within the Região Metropolitana do Rio de Janeiro.
The plant serves approximately 275,555 people, classifying it as a large agglomeration under Brazilian and international standards.
The treated effluent from ETE Icarai Niteroi is discharged into Guanabara Bay, a major estuarine system that flows into the Atlantic Ocean.
The plant helps protect the water quality of Guanabara Bay, which receives inflows from several rivers in the Rio de Janeiro metropolitan area, including the Rio Carioca and Rio Macacu.
The plant operates under Brazil's CONAMA resolutions, which set effluent discharge standards. For a plant serving over 200,000 people, secondary treatment is typically required to reduce organic matter and nutrients before discharge into sensitive water bodies like Guanabara Bay.
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