Brine purification improves the brine quality upstream of a salt crystallisation plant. By means of chemical treatment a brine is obtained which is nearly free of calcium and magnesium which can be produced and fed directly into the evaporation process.
This brine purification process leads to an efficient use of process chemicals.
MgSO₄ |
+ Ca(OH)₂ |
→ |
Mg(OH)₂↓ |
+ CaSO₄ |
Na₂SO₄ |
+ Ca(OH)₂ |
→ |
2NaOH |
+ CaSO₄↓ |
2NaOH |
+ CO₂ + CaSO₄ |
→ |
CaCO₃↓ |
+ Na₂SO₄ + H₂O |
SEP Salt & Evaporation Plants Ltd
Neuwiesenstrasse 69
CH-8400 Winterthur
Switzerland
Phone +41 52 260 50 70
Fax +41 52 260 50 80
info@sepwin.ch