Facts & Figures
|Location||Santo António, Goiânia, Brazil|
|Nereda Design Capacity:|
|• Dry Weather Flow||82 MLD|
|• Peak Flow||6,085 m3/h|
|• PE||466,000 PE (PE = 60 gBOD/d)|
About the Santo António Nereda WWTP in Goiânia, Brazil
Santo António Wastewater Treatment Plant (WWTP) is located in Aparecida de Goiânia, state of Goiás. Goiânia is the capital and largest city of the Brazilian state of Goiás. It is the second-largest city in Brazil’s Central-Western Region and the 11th largest in the country.
Like many WWTPs in South America, the facility at Santo António had seen a massive population increase since it was built and required an upgrade due to several factors, including more stringent environmental and efficiency metrics.
Nereda technology was chosen as the solution to this plant upgrade. The city of Goiás has a typical tropical – wet and dry – climate, with an average temperature of 23.2 °C (73.8 °F). Its wet season is from October to April, and its dry season is from May to September. The annual rainfall is around 1,300 mm (51 inches). These climatic features were factors in the technology selection for the facility. The upgrade of the plant has been undertaken to improve the current primary treatment with UASB reactors into a plant with carbon and nutrients removal. The upgraded plant has a total treatment capacity of m3/d average dry weather flow (ADWF).
The upgraded plant uses the Nereda technology to treat wastewater of predominantly domestic origin and the purification process includes both biological phosphorous and nitrogen removal. It is one of several Nereda plants in Brazil, a country which has embraced the Nereda technology. The upgrade (First phase) contains an influent buffer of 9,000 m³ and two reactors of 9,500 m³ each. These two Nereda reactors will partly receive effluent from the UASB plant.In the second phase a third reactor of 9,500 m³ will be added to bring the total treatment capacity to 82,000 m³/d average dry weather flow (ADWF).