Salt -containing waste water treating device

The utility model provides a salt -containing waste water treating device, include: processing unit in advance for carry out the preliminary treatment to containing salt waste water, the concentratedunit of one -level for the receipt come from in advance processing unit contain salt waste water and to its concentration, the concentrated unit of second grade for what the receipt came from the concentrated unit of one -level contains salt waste water and edulcoration, and further to its concentration, divide the salt unit for what the receipt came from the concentrated unit of second grade contains salt waste water, and the separation is contained the mixed liquid of chlorion and contains sulfate's mixed liquid, the unit is retrieved to sodium chloride for the receipt contains the mixed liquid of chlorion and evaporates the crystallization to it, obtains the sodium chloride crystal, the unit is retrieved to sodium sulphate for the receipt contains sulfate's mixed liquid and carries outlower temperature crystall