On the left, wastewater; on the right, the distillate
Crystallization of Saline Water from Precious Metal Refining Process
Year
2024
Sector
Application:
Saline Wastewater Resulting from the Refining Process
Description:
Acidic Wastewater from a Mixture of Hydrochloric Acid and Nitric Acid Neutralized with Caustic Soda, Resulting in Neutral or Alkaline Water Rich in Nitrate and Chloride Salts.
Dati tecnici:
| Parametri | Pre-test | Distillato 80% |
| pH | 12 | 5 |
| EC | > 200 mS/cm (20°C) | < 10 µS/cm (20°C) |
| NO3-N | > 2,5 g/l | |
| CI | > 52 g/l |
Residuo solido (20% in volume):
140 g/L of Crystallized Salts (80% Dry Content)
Highlights:
- Evapo/crystallization with vacuum technology
- Recovery of 80% of distilled water
- Disposal of a dry residue reduced in volume
