ETE Residencial Edval Gaia - Secondary Wastewater Treatment in Palmeira dos Índios, Alagoas

ETE Residencial Edval Gaia is a wastewater treatment facility located in Palmeira dos Índios, within the state of Alagoas in northeastern Brazil. The plant serves a small community of 812 residents, reflecting its role in local sanitation infrastructure for this inland municipality. The plant provides secondary treatment, which is the standard biological process for removing organic matter and suspended solids. Under Brazil's national environmental regulations (CONAMA resolutions), secondary treatment is typically required for urban wastewater before discharge. The plant's discharge volume of 40.01 cubic meters aligns with its small service population. The treated effluent is released into local watercourses that drain into the São Francisco River basin, one of Brazil's most important river systems. The São Francisco River flows eastward to the Atlantic Ocean, supporting diverse aquatic ecosystems and providing water for agriculture and communities along its course. Proper treatment at this plant helps protect downstream water quality in this semi-arid region.

The plant discharges into local streams that are part of the São Francisco River basin, which ultimately reaches the Atlantic Ocean. The São Francisco River is a major waterway in northeastern Brazil, supporting irrigation, fisheries, and biodiversity in a region prone to drought. Effective secondary treatment at this plant reduces organic pollution and nutrient loading, helping to maintain ecological balance in the downstream aquatic environment.