What methods can be used to desalinate sea water ?
A. The traditional method is to distill water. In other words, heat the sea water to vaporize it, remove the vapor to a different container and condense the water vapor by cooling it. Rainfall is an example of the natural distillation process. The next alternative is to freeze the sea water and then thaw the ice thus formed. Icebergs are examples of natural freeze-thaw process.