ETE SESI ARACI CORREA Wastewater Treatment Plant, Canela, Rio Grande do Sul

ETE SESI ARACI CORREA is a wastewater treatment plant located in Canela, a city in the Serra Gaúcha region of Rio Grande do Sul, Brazil. The plant serves a small population of 540 people, reflecting its role in a localized community within the municipality. The plant provides secondary treatment, which is the standard biological treatment required under Brazilian regulations for small agglomerations. Brazil's National Environment Council (CONAMA) sets discharge standards that mandate secondary treatment for most inland plants to protect water quality. The plant's daily discharge volume is 129.60 cubic meters, indicating a modest operational scale. The treated effluent is discharged into local water bodies that ultimately drain into the Rio dos Sinos basin, which flows into the Guaíba River and then into the Lagoa dos Patos, a large coastal lagoon in southern Brazil. This watershed supports diverse aquatic life and is important for regional water supply and agriculture.

The plant's discharge enters the Rio dos Sinos watershed, which flows into the Guaíba River and eventually reaches the Lagoa dos Patos, one of South America's largest coastal lagoons. This lagoon is ecologically sensitive, supporting diverse fish species and migratory birds. The region's subtropical climate and hilly terrain make water quality management crucial for downstream ecosystems and human use.