ETE SAO MIGUEL DO ARAGUAIA - Secondary Wastewater Treatment in São Miguel do Araguaia, Goiás

ETE SAO MIGUEL DO ARAGUAIA is a wastewater treatment plant located in the Residencial Cecília area of São Miguel do Araguaia, a municipality in the state of Goiás, Brazil. The plant serves a population of 5,649 residents, classifying it as a small-scale municipal facility in the Central-West region of the country. The plant provides secondary treatment, which is the standard biological treatment level required under Brazilian regulations (CONAMA resolutions) for urban wastewater. This process typically involves biological degradation of organic matter, reducing biochemical oxygen demand and suspended solids before discharge. The treated effluent is discharged into local watercourses that drain into the Araguaia River basin, a major tributary of the Tocantins River system. This basin supports diverse aquatic ecosystems and is important for regional water supply and agriculture. The plant's operation helps protect downstream water quality in this ecologically significant region.

The plant discharges into the Araguaia River basin, which flows northward to join the Tocantins River and eventually reaches the Atlantic Ocean near the Amazon River delta. The Araguaia River is known for its seasonal floodplains and rich biodiversity, including fish species and aquatic plants. The region's Cerrado biome contributes to seasonal water flow variations, and the plant's secondary treatment helps mitigate nutrient and organic pollution impacts on downstream ecosystems.