Desalination

 A desalination plant essentially separates saline water into two streams: one with a low concentration of dissolved salts (the fresh water stream) and the other containing the remaining dissolved salts (the concentrate or brine stream).  Water desalination processes separate dissolved salts and other minerals from water. Seawater desalination has the potential to reliably produce enough potable water to support large populations located near the coast. The most common desalination methods employ reverse-osmosis in which salt water is forced through a membrane that allows water molecules to pass but blocks the molecules of salt and other minerals.

  Thermal desalination uses heat, often waste heat from plants or refineries, to evaporate and condense water to purify it. The cost is very high and so it cannot be afforded by everyone who needs it, but because the desalinisation technology is improving fast, so the costs are beginning to fall, making it more affordable to countries and islands that need it.

Desalination techniques are also being developed on a much smaller scale. Portable desalination kits are a prime example. Desalination is becoming more economically viable as the technology improves. Desalination plants can be provided in a wide range of outputs to cater for small isolated communities or to contribute substantially to water supplies for large cities and even for irrigation.

  • Vacuum distillation
  • Multi-stage flash distillation
  • Multiple-effect distillation
  • Reverse osmosis and Nanofiltration:Leading Pressure driven membrane processes
  • Electrodialysis and Electrodialysis Reversal

Related Conference of Desalination

Desalination Conference Speakers