Seawater desalination method
AssigneeNitto Denko Corporation
InventorsSatoru Ishihara, Hiroshi Iwahori, Yuuji Yamashiro
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Abstract
A seawater desalination method of the present invention includes the steps of obtaining ultrafiltration membrane-treated water by subjecting seawater (2) to an ultrafiltration membrane treatment; obtaining membrane bioreactor-treated water by subjecting organic wastewater (1) to a membrane bioreactor treatment; obtaining mixed water by mixing the ultrafiltration membrane-treated water and the membrane bioreactor-treated water; obtaining ultraviolet irradiation-treated water by subjecting the mixed water to an ultraviolet irradiation treatment; and subjecting the ultraviolet irradiation-treated water to a reverse osmosis membrane treatment.
Claims4
A seawater desalination method for obtaining freshwater from seawater by a reverse osmosis membrane treatment, the method comprising the steps of:
- obtaining ultrafiltration membrane-treated water by subjecting seawater to an ultrafiltration membrane treatment;
- obtaining membrane bioreactor-treated water by subjecting organic wastewater to a membrane bioreactor treatment;
- obtaining mixed water by mixing the ultrafiltration membrane-treated water and the membrane bioreactor-treated water;
- obtaining ultraviolet irradiation-treated water by subjecting the mixed water to an ultraviolet irradiation treatment;
- and
- subjecting the ultraviolet irradiation-treated water to a reverse osmosis membrane treatment.
Dependencies are inferred from the claim text.