Industrial

Back to sectors
Industrial Case Studies

EDF - Chemical treatment for cooling towers


The EDF nuclear Cattenom power plant (4x1300MW) has selected Veolia Water Technologies’ entity OTV DBI (Design & Build for Industry) for the design and construction of cooling circuits and anti-scaling systems, ensuring the chemical treatment for cooling towers.


Project Background

Key Figures EDF Cattenom
Commissioning (4 blocks): 2014 - 2015 - Flow of the cooling circuit: 48 m3/s per block - Average flow sulfuric acid: 400 L/h per block - Average...


The EDF nuclear Cattenom power plant (4x1300MW) has selected Veolia Water Technologies’ entity OTV DBI (Design & Build for Industry) for the design and construction of cooling circuits and anti-scaling systems, ensuring the chemical treatment for cooling towers.

 

The Client's Needs
 

  • To prevent bacterial growth in the cooling system and  cooling towers.
  • Fight against scaling in the cooling circuit and cooling towers.
  • Follow the chloride discharge according to decree permission.
  • Comply with the requirements of availability and safety.



Project & Technology Solutions

  • Cooling circuits system: installation of two production and automatic monochloramine injection facilities at the cooling towers and continuous analysis of chemical parameters.
  • Scaling of the cooling circuits system: installation of two automatic sulfuric acid injection systems to replace the initial treatment with hydrochloric acid and continuous analysis of chemical parameters.
  • Decanting and safe chemicals storage systems.

     

Benefits

  • Cooling circuits system: monochloramine avoids the risk of legionella in the cooling circuit.
  • Scaling of the cooling circuits system: sulfuric acid is used to limit discharges of chlorides, which become more important because of the injection of monochloramines.
  • Samples and continuous analysis of the parameters (pH, total hardness, total alkalinity, conductivity, chlorine) allows monitoring and control of consumption.
  • Solutions have been implemented in accordance with safety and quality standards in force on nuclear sites in operation.