Detergent Grade
Sodium Sulphate
Anglo American
South Africa
A combination of thermal evaporation and cooling crystallisation to produce 40 tons of salt per day and high quality product water for reuse from contaminated underground mine water.
Application
- ZLD solution for large scale coal mining operation
Objectives
- Produce cooling tower make-up for power station from contaminated mine water, whilst producing zero waste. An integrated process to recover agricultural fertiliser and detergent grade sodium sulphate was implemented on a BOOM basis
Key Technology
- A combination of thermal evaporation and cooling crystallisation