ETE Parque dos Rios II Modulo II - Secondary Wastewater Treatment in Manaus, Amazonas

ETE Parque dos Rios II Modulo II is a wastewater treatment plant located in Manaus, the capital of Amazonas state in northern Brazil. The plant provides secondary treatment for a small community of 190 residents, reflecting the decentralized approach to sanitation in the Amazon region. As a secondary treatment facility, it employs biological processes to reduce organic matter and suspended solids. The plant discharges 22.73 cubic meters per day of treated effluent. The plant's scale aligns with Brazil's regulatory framework for small agglomerations under CONAMA resolutions. The treated effluent likely discharges into local streams that feed the Rio Negro, a major tributary of the Amazon River. The Amazon basin is ecologically critical, supporting immense biodiversity and acting as a global carbon sink. Proper treatment helps protect downstream aquatic ecosystems and communities.

The plant is located in the Amazon rainforest, within the Rio Negro watershed. Treated effluent flows into local igarapes (small streams) that drain into the Rio Negro, a major blackwater river. The Rio Negro joins the Amazon River near Manaus, forming the largest river system on Earth. The surrounding ecosystem is highly sensitive, with diverse aquatic life including fish, amphibians, and invertebrates. Effective wastewater treatment is crucial to prevent nutrient loading and contamination that could harm this fragile environment.