ETE CELINA AMORIM - Secondary Wastewater Treatment in Cajueiro, Alagoas

ETE CELINA AMORIM is a wastewater treatment plant located in Cajueiro, in the state of Alagoas, Brazil. It serves a small population of 495 residents, reflecting its role as a local facility for the community. The plant is situated in the Região Geográfica Imediata de Atalaia, part of the broader Maceió metropolitan region. The plant provides secondary treatment, which is the standard level required under Brazilian regulations for smaller agglomerations. Brazil's National Environment Council (CONAMA) sets discharge standards that mandate secondary treatment for most municipal wastewater to protect water quality. The plant's discharge volume is 47.24 m³/day, indicating its scale relative to the population served. The treated effluent is released into local waterways that drain into the Atlantic Ocean via the coastal basins of Alagoas. This region is ecologically sensitive, supporting diverse aquatic life and mangroves along the coast. Proper treatment helps preserve water quality in downstream rivers and estuaries, which are important for local fisheries and biodiversity.

The plant discharges into the drainage network of the Região Geográfica Imediata de Atalaia, which flows into the Mundaú or Paraíba do Sul river basins (both drain into the Atlantic Ocean near Maceió). The downstream environment includes coastal lagoons and mangroves that provide critical habitat for fish, crustaceans, and migratory birds. Protecting these ecosystems from untreated sewage is vital for maintaining water quality and supporting local livelihoods.