ETE SAO JOAO DOIS IRMAOS - Secondary Wastewater Treatment Plant in Dois Irmãos, Brazil

ETE SAO JOAO DOIS IRMAOS is a municipal wastewater treatment plant located in Dois Irmãos, a city in the state of Rio Grande do Sul, Brazil. The plant serves a population of 1,851 residents, reflecting its role in managing domestic wastewater for a small community in the southern region of the country. The plant provides secondary treatment, which is the standard biological process for removing organic matter and suspended solids. In Brazil, wastewater treatment plants are regulated under national environmental standards, and secondary treatment is typical for facilities serving small to medium agglomerations. The plant discharges an average of 199.01 cubic meters of treated wastewater per day. The treated effluent is released into local water bodies that drain into the Sinos River basin, part of the larger Guaíba watershed, which ultimately flows into the Lagoa dos Patos lagoon and the Atlantic Ocean. The plant's operation helps protect downstream aquatic ecosystems and supports water quality in the region.

The plant discharges into the Sinos River basin, a tributary of the Guaíba River system, which drains into Lagoa dos Patos, one of the largest coastal lagoons in South America. This lagoon supports diverse aquatic life and is an important migratory corridor for fish and birds. The secondary treatment reduces organic pollution, helping to maintain ecological balance in the downstream water bodies.