SALT WATER DESALINATION PLANT AND METHOD OF REMODELING THE SALT WATER DESALINATION PLANT

摘要

PROBLEM TO BE SOLVED: To provide an efficient salt water desalination plant by effectively utilizing energy while saving cost of installation.SOLUTION: A salt water desalination plant that includes a reverse osmosis membrane device 3 that separates salt water into permeable water and concentrated salt water, a high pressure pump 5 that boosts low pressure salt water to a predetermined pressure and supplies to the reverse osmosis membrane device 3, a pressure exchange device 6 that boosts the low pressure salt water with high pressure concentrated salt water exhausted from the reverse osmosis membrane device 3, and a booster pump 7 that boosts the salt water boosted by the pressure exchange device 6 to the predetermined pressure and supplies to the reverse osmosis membrane 3, and further includes a residual pressure recovery device 8 that recovers the residual pressure of the concentrated salt water exhausted from the pressure exchange device 3.SELECTED DRAWING: Figure 1