Overview
ETE 22 DE ABRIL is a secondary treatment plant in Jacareí, São Paulo, Brazil, serving approximately 2,600 people. It discharges 227.47 m³/day of treated wastewater into local water bodies.
ETE 22 DE ABRIL is a municipal wastewater treatment plant located in the 22 de Abril neighborhood of Jacareí, in the state of São Paulo, Brazil. The plant serves a population of about 2,600 residents and is situated in the Vale do Paraíba region, an important industrial and agricultural corridor between São Paulo and Rio de Janeiro. The plant provides secondary treatment, which is the standard level required by Brazilian regulations (CONAMA resolutions) for urban wastewater. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The plant has a reported discharge volume of 227.47 m³/day, indicating it is sized for a small community. The treated effluent is discharged into local water bodies that eventually flow into the Paraíba do Sul River, a major river system supplying water to millions of people in southeastern Brazil. The river drains into the Atlantic Ocean near Campos dos Goytacazes. Proper treatment at this plant helps protect downstream water quality and aquatic ecosystems in the Paraíba do Sul basin.
Environmental context
The plant's discharge enters the Paraíba do Sul River basin, which flows through the states of São Paulo, Rio de Janeiro, and Minas Gerais before reaching the Atlantic Ocean. This river is a critical water source for the Rio de Janeiro metropolitan area and supports diverse aquatic life. The region's subtropical climate and industrial activity make effective wastewater treatment essential to prevent eutrophication and protect biodiversity in the river and its coastal estuary.
Frequently asked questions
ETE 22 DE ABRIL is located in the 22 de Abril neighborhood of Jacareí, in the state of São Paulo, Brazil. The address is Avenida Três de Julho, Figueira, Conjunto 22 de Abril.
The plant serves approximately 2,599 people, making it a small-scale municipal wastewater treatment facility.
The plant discharges treated effluent into local water bodies that are part of the Paraíba do Sul River basin. The final destination is the Atlantic Ocean.
The plant provides secondary treatment, which is the standard required by Brazilian environmental regulations (CONAMA) for urban wastewater. This typically involves biological processes to reduce organic pollutants.
Brazil's wastewater treatment is regulated by CONAMA resolutions and state environmental agencies. For small plants like this, secondary treatment is typical, and discharge permits are issued by the state environmental authority (CETESB in São Paulo) to ensure compliance with water quality standards.
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