Overview
ETE Pararangaba is a municipal wastewater treatment plant serving Caçapava, São Paulo, Brazil. It handles a population equivalent of 132,455 and operates under Brazil's national water quality regulations.
ETE Pararangaba is a municipal wastewater treatment plant located in the Santa Luzia district of Caçapava, within the Metropolitan Region of Vale do Paraíba e Litoral Norte, São Paulo, Brazil. The plant serves a population equivalent of 132,455, classifying it as a large agglomeration under Brazilian environmental standards. As a facility of this scale, ETE Pararangaba is expected to comply with CONAMA Resolution 430/2011 and state-level regulations from CETESB, which mandate secondary or advanced treatment to protect receiving water bodies. The plant's treatment process and capacity details are not publicly available, but typical configurations for such agglomerations include activated sludge or similar biological systems. The treated effluent is discharged into the Paraíba do Sul River basin, a critical waterway that supplies water to millions of people in southeastern Brazil and supports diverse aquatic ecosystems. The river flows through the Vale do Paraíba region before reaching the Atlantic Ocean near Campos dos Goytacazes, making the plant's performance important for downstream water quality and coastal health.
Environmental context
The plant discharges into the Paraíba do Sul River basin, which drains into the Atlantic Ocean. This river is a vital water source for the region and supports a rich biodiversity, including migratory fish species. The surrounding area is a mix of urban and agricultural land, with the river providing irrigation and drinking water downstream. Proper treatment is essential to prevent nutrient pollution and protect the ecological balance of the river and its estuary.
Frequently asked questions
ETE Pararangaba is located in the Santa Luzia district of Caçapava, in the state of São Paulo, Brazil. It is part of the Metropolitan Region of Vale do Paraíba e Litoral Norte.
The plant serves a population equivalent of 132,455, making it a large-scale municipal wastewater treatment facility.
The treated effluent is discharged into the Paraíba do Sul River basin, which flows through the Vale do Paraíba region and ultimately reaches the Atlantic Ocean.
The plant operates under Brazil's CONAMA Resolution 430/2011 and state-level regulations from CETESB, which set effluent quality standards for wastewater treatment plants.
For agglomerations of this size, secondary treatment such as activated sludge or aerated lagoons is standard, often with nutrient removal to protect sensitive water bodies.
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