The best way to separate salt from a solution would be to use evaporation. Salt can easily dissolve in water and its solubility increases with as the temperature increases. Filtration is not an applicable method to separate salt which is visibly a solid when dry because salt readily dissolves in water and forms a homogeneous solution. Electrolysis has also been stated to be capable of separating salt from water. The resulting products are different, however, and salt (NaCl) will not be obtained due to breakdown.
To obtain salt (solute) from a solution, one would simply heat the solution until the boiling point is reached. Water (solvent) will also start evaporating at this point, leaving behind salt in its solid form. The evaporating water can also be condensed and collected in a separate container.