| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem that if concentrated seawater, discharged from a seawater desalination apparatus, is discharged in a sea area, salinity of the sea area becomes higher than salinity of an ordinary sea area due to high salinity of the concentrated seawater, so that fear for influence to a marine ecosystem is generated, therefore a dilution method for diluting the concentrated seawater with seawater is adopted as a countermeasure, but it is hard to reduce the salinity to the ordinary seawater. <P>SOLUTION: In the seawater desalination apparatus 3, the seawater taken is pressurized to be permeated through a reverse osmosis membrane, so that permeated water is obtained and the concentrated seawater impermeable through the reverse osmosis membrane is discharged to the outside of an system. The concentrated seawater from the seawater desalination apparatus 3 is mixed with treated water discharged from a sewage treatment plant and the mixed concentrated seawater, mixed with the treated water, is discharged to the sea area. <P>COPYRIGHT: (C)2012,JPO&INPIT |
