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Tedagua

 
News
Tedagua to build €33 million sludge energy recovery system at Dr. Hélio Seixo de Brito WWTP in Goiânia (Brazil)
Escrito por Tedagua: 12-01-2015

SaneagoSANEAGO, the Goiânia Sanitation Company has awarded the contract for the design and construction of the sludge energy recovery system at the Dr. Hélio Seixo de Brito WWTP, in the capital city of the state of Goiás, to the Cogeneraçâo Goiânia consortium, made up of Tedagua and Brazilian company Qualiman Engenharia e Montagens Ltda. The contract is worth 104 million reales (around €33.5 million) and is scheduled for completion within a period of 24 months.

 

Located 200 km southeast of the capital, Brasilia, the modern city of Goiânia has a population of almost 1,300,000, of whom a million are connected to the sewage network. The Dr. Hélio Seixo de Brito facility is the largest of the city’s three WWTPs and treats the wastewater of 840,000 inhabitants. The plant has an average treatment capacity of 2.3 m3/s.

 

This project will enable the production of energy from the biogas generated in the digesters at the WWTP. The consequent reduction in the energy auto consume, along with the reduction in the quantity of sludge generated during the conversion of organic matter into biogas will make the plant a more sustainable facility. It will also ease the operation, since a greater sludge stability will be achieved and lime will no longer be required as a reagent in the treatment process.

 

Estación Esgoto

 

The system to be built is made up of the following elements:

  • 3 sludge thickeners of 16 m in diameter.
  • 3 digesters with a unitary capacity of 9,327 m³.
  • 1 digested sludge tank of 5,400 m³.
  • 2 gasholders with a capacity of 4,100 m³.
  • 2 biogas pretreatment units with capacity of 600 Nm³/h.
  • 10 microturbines with a capacity of 200 Kw.
  • A building of 1,000 m² to house the microturbines and control systems.

This contract means that Tedagua has now added Brazil to the list of 18 countries in which the company manages contracts related to water treatment. Over 90% of Tedagua’s activity at the close of 2014 is outside Spain.