The water needs of surface treatment plants are significant and result in a large amount of effluents.

Supplying static and current rinses, assembling new baths, washing filters and tanks — there are so many operations that generate water rich in pollutants carried away from the treatment baths.

Each step of surface treatment uses specific reagents:

  • Passivation and finishing treatment: cyanide, fluorides, chromium VI, heavy metals, surfactants
  • Pickling baths: waters with acidic or basic pH levels; rich in fluorides, phosphorus, and heavy metals
  • Degreasing baths: water with basic pH levels, cyanide-laced, rich in heavy metals and hydrocarbons

Although the use of commercial products with less harmful environmental impacts is becoming more widespread, water from rinsings still contains pollutants, which are often very toxic and must be eliminated.

We treat this water before they’re discharged into the environment or at the municipal wastewater treatment plant:

To learn more about what Ovive does in the surface treatment industry, contact us today.

Specific Cases

Production of galvanized steel parts in Carquefou (44)

    Construction of a zinc-loaded rainwater treatment plant:

    • Physical and chemical treatment with coagulation and flocculation
    • Lamella clarification or polishing using a sand filter
    • Dewatering by a filter press
    Parameters Input Discharge
    Zinc - mg/l 800 2
    Flow rate - m3/hr 15
    Recycling ferrous and non-ferrous metals in Haumont (59)

      Rainwater treatment solution:

      • Flotation and sand filter treatment
      • Activated carbon polishing treatment
      Parameters Input Discharge
      COD - mg/l 20 40
      SM - mg/l 100 35
      Flow rate - m3/hr 1,5