PROCESSING METHOD OF DESALINATING SALT WATER AND PROCESSING SYSTEM OF DESALINATING SALT WATER

摘要

PROBLEM TO BE SOLVED: To provide a processing method of desalinating salt water capable of reducing a pressure necessary for desalination processing using a reverse osmosis method, and a processing system of desalinating salt water.SOLUTION: The processing method of desalinating salt water for obtaining fresh water from salt water includes: a membrane separation step of transferring water contained in the salt water in a first chamber to the salt water in a second chamber through a semipermeable membrane to discharge a dilute salt water obtained from the second chamber by dilution by flowing a part of the salt water to the first chamber of a semipermeable module provided with the semipermeable membrane, and with the first chamber and the second chamber separated by the semipermeable membrane, and flowing the other part of the salt water to the second chamber to pressurize the first chamber; and a desalination step of obtaining fresh water from the diluted salt water using a reverse osmotic method.SELECTED DRAWING: Figure 1