Overview
ETE PENHA is a large wastewater treatment plant serving over 344,000 people in Rio de Janeiro, Brazil. Located in the Penha district, it plays a key role in managing the city's sewage within the Guanabara Bay watershed.
ETE PENHA is a major wastewater treatment facility located in the Penha district of Rio de Janeiro, Brazil. Serving a population of over 344,000, it is classified as a large agglomeration under Brazilian regulations, which require advanced treatment to protect sensitive coastal waters. The plant is situated along Avenida Brasil, a key urban corridor, and is part of the city's extensive sanitation infrastructure. Brazilian law (CONAMA Resolution 430/2011) mandates secondary treatment for large urban plants, with additional nutrient removal in sensitive areas like Guanabara Bay. The plant's designed capacity is 1.00 (likely in cubic meters per second or similar unit), indicating a substantial facility. As a large agglomeration, it is expected to meet stringent effluent standards to minimize environmental impact. The treated wastewater from ETE PENHA ultimately discharges into Guanabara Bay, a highly urbanized estuary that drains into the Atlantic Ocean. The bay supports diverse aquatic life and is an important ecological and economic resource for Rio de Janeiro. The plant's operation is critical to reducing pollution loads in this sensitive coastal ecosystem, which faces challenges from industrial and urban runoff.
Environmental context
ETE PENHA discharges into the Guanabara Bay watershed, a large estuarine system that flows into the South Atlantic Ocean. The bay is ecologically sensitive, supporting mangroves, fish, and bird species, and is a vital resource for local communities. The plant's location within 50 km of the coast underscores the importance of effective treatment to protect marine water quality and public health.
Frequently asked questions
ETE PENHA is located in the Penha district of Rio de Janeiro, Brazil, along Avenida Brasil. It serves the northern zone of the city, including the Maré and Penha neighborhoods.
ETE PENHA serves a population of over 344,000 people, classifying it as a large agglomeration under Brazilian wastewater regulations.
The treated wastewater from ETE PENHA is discharged into the Guanabara Bay watershed, which flows into the Atlantic Ocean. The plant's discharge is regulated to protect this sensitive coastal estuary.
ETE PENHA operates under Brazilian environmental regulations, including CONAMA Resolution 430/2011, which sets effluent standards for wastewater treatment plants. Large agglomerations like this are required to achieve secondary treatment or higher to protect water quality.
For large agglomerations in Brazil, secondary treatment is the minimum standard, often with additional nutrient removal in sensitive areas. Plants may use activated sludge or similar processes to meet stringent effluent limits.
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