Galvanic treatments and surface treatments

Galvanic technology involves processes carried out with aqueous solutions, containing metal salts, acids, bases, detergents, and specific additives, performed in sequence tanks at a temperature close to ambient.

Problem:

The process tanks are always followed by washing tanks to remove the residues of the process solutions that remain adherent to the parts to be treated.

This results in the production of large quantities of aqueous effluents to be disposed of, which can be divided into:

  • Alkaline-acid discharges,
  • washing baths,
  • exhausted saline solutions.

The composition of the effluents is characterized by the presence of metals (lead, iron, copper, nickel, zinc, aluminum, etc.), ammoniacal compounds, chlorides, cyanides, fluorides, insoluble organic substances.

These elements, if sent to traditional purification plants using a physicochemical process, are difficult to manage: during treatment, it is necessary to add reagents for pH correction and flocculants for the precipitation of hydroxides, thus producing sludge that will need to be disposed of.

Even if reduced in a filter press, these sludges have very high disposal costs.

Solution:

The most effective method is vacuum evaporation, which allows reducing the volumes of the effluent, enabling the recovery of most of the treated water in a closed circuit. (ZLD)

Advantages:

→ The system is fully automated
→ Does not require dosing of chemical products
→ Does not produce sludge
→ Allows the recovery of treated water in a closed circuit (ZLD)
→ Also allows the recovery of the concentrate
→ Does not produce discharges with traditional systems
→ Reduces disposal costs

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Our sales department is at your disposal for advice in choosing the best possible solution. Or download the data sheet to learn more.

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