Brine-Water Treatment

Brine, also known as concentrate, is the highly concentrated saline water produced as a by-product in desalination processes. This liquid stream contains most of the dissolved solids of feedwater in concentrated form, as well as some pre-treatment chemicals (e.g., residual amounts of coagulants and flocculants) and microbial contaminants.

The Process


The most common type of crystallizer for brine treatment is the forced circulation crystallizer. In this technology, the brine is initially fed into the crystallizer sump. The incoming brine then mixes with the circulating brine and is then pumped into a shell-and-tube heat exchanger where it is boiled by vapor from the vapor compressor. Since the tubes in the heat exchanger are submerged, the brine is under pressure and does not evaporate, forming crystals.


The Problem


The classical separation process involves centrifugation or filtration. These approaches need a bigger infrastructure, energy consumption and maintenance. Hence, viable and cost-effective brine management systems are needed to reduce environmental pollution.


The Solution


The space efficient UADA module shortens the separation process producing salt crystals. Heat generation is achieved by dissipating the process heat and returning it back to the heater.





The Advantages


RAPTECH technology increases the efficiency of brine crystallization and thus crystal separation from the brine slurry. The energy consumption of the brine water treatment plant can be significantly reduced by recycling the process heat.