Brine treatment

Some effluent wastewater has a high concentration of salt. These are often difficult to treat and their management is complicated and can be very costly.

Brine wastewaters are generated by a number of industries, for example in the food industry, where Brine is used as a preservative such as on meats. Brine Wastewater is also a common problem in heavy industries such as Oil, Gas and Power Generation, where Brine Water is used as a Coolant, however the Brine Water can then pick up contaminants during the process and must be treated before being discharged.

Therefore, although the main objective of Brine treatment is to separate out the dissolved salt ions (Sodium (Na)) from the wastewater. Due to the source of some of the Brine wastewater, additional treatments might be necessary to assist in the removal of other contaminants, such as metals, and other water hardness salt ions such as Calcium (Ca2).

Industries where Condorchem Envitech have successfully assisted clients include:

  • Capture and treatment of back-wash from reverse osmosis reject.
  • Containment and treatment of brine water used for cooling on drilling rig
  • Treatment of Brine water used for soaking of meat in the food industry
  • Recycling system on Power Plant that used Brine Water for cooling system

As with all systems that Condorchem Envitech build, we work with the client to fully optimise the system, to ensure that the best cost effective solution is provided.

Some of the technologies that Condorchem Envitech have installed include:

  • Membrane Filtration – such as Reverse Osmosis, these tend to be in easier applications where there is a low risk of other contaminants polluting the Brine Water
  • Vacuum Evaporators – Evaporation processes are the most widespread for brine treatment as they enable the highest degree of concentration, typically they are in series, (up to 3) but can be single stage evaporated, depending on the volume and concentration of the Brine Water. The resulting distillate, is often of a high quality and can be often recycled for use in other applications.
  • Crystallizers – Normally as a final stage of treatment, to completely dry out the Brine Waste. However, they can be used as a single treatment process in some applications

Within the above systems, additional treatments can be added to split out other contaminants. The objective of this is to not only produce a potentially high quality distillate water, but also ensure that the dried Brine might also be used, rather than having to be simply disposed of. Condorchem Envitech can provide systems to achieve this such as concentration units.