Selective
Salt Recovery


Sasol
South Africa
A ZLD plant with staged thermal evaporation and crystallisation to produce by-products from an effluent mine water feed, eliminate the need for disposal of mixed salts at a landfill site and make water available for reuse.
Selective salt crystallisation.
Application
- Desalination purge brine
Objectives
- ZLD
- Recover:
- Sodium sulphate
- Sodium chloride
- Calcium/ magnesium sulphate
Key Technology
- Selective salt crystallisation
- FCC with optimized MVR