The metal surfaces treatment industry is comprised of a large variety of activities whose purpose is to treat metal surfaces, protecting them from corrosion, improving their resistance to wear and erosion, or enhancing their appearances with metallic coatings.
These activities or treatments can be grouped into two main categories:
1. Cleaning processes and surface preparation (degreasing, pickling, …).
2. Metallic coatings and obtaining surface finishes (electroplating, anodizing, immersion, …).
During these treatment processes, large amounts of wastewater or effluents of diverse composition are generated according to the treatment the metal surfaces have undergone.