Operation of Facilities for the Terrebonne-Mascouche Wastewater Treatment Board Using Aerated Lagoons

Project description


  • "Optional lagoon aeration" treatment plant
  • Population served: 37,000 people
  • Serves an industrial area
  • Capacity: Average flow 28,000 m³/day

Main components

  • Two head pumping stations with generators
  • Pre-treatment, two Claro screen rakes
  • Four aerated lagoons with a total volume of 350,000 m³
  • Three 250 HP centrifugal blowers
  • Biolac fine bubble air distribution system
  • Bioreactor incorporated into one lagoon
  • Phosphate removal using iron sulfate

Complexity and key features

  • One main pumping station does not have an overflow chamber
  • Addition of a bioreactor allows for ammonium nitrate treatment

Services provided

  • Management, operation and maintenance
  • Process optimization
  • Preventive and corrective maintenance
  • Supply management
  • Production of monthly and annual reports

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