Bypass for the production of higher quality water in nuclear power plants

CTP environment implemented a complete bypass of the site's high-quality water production. This production used river water and storm water as a feedstock. Once produced, it supplies the potable and demineralised water chain production of the site. Continuity and uninterrupted service is a necessity for the site.

The mobile system set up included:

• Raw water storage
• Physical-chemical treatment of the water at a flow rate of 100m³/h:
  • On-line pH control
  • On-line coagulation
  • On-line media filtration
  • On-line disinfection
  • On-line polishing filtration
• Buffer storage of produced water, vital in the prevention of variations in site quality water requirement and unforeseen events.
• 2x8 shift operation to ensure continuity of production

This temporary treatment plant recorded the following performances:

• pH control between 7.5 and 8.5
• TSS removal: turbidity < 5 NTU
• Control of algae/bacteria proliferation: free chlorine maintained between 1 & 2 mg/l at all time

This turnkey solution allowed the maintenance of the site's water storage tanks and valves within the planned duration (2 weeks) without any disruption of the site water supply.