| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide Ca-rich mineral water as well as to provide salt having adjusted Ca and Mg contents, high palatability and no variation in quality, and to also provide a method for treating seawater to obtain the salt and mineral water. <P>SOLUTION: The method for treating seawater to obtain the salt and mineral water from seawater is characterized by sequentially carrying out a step 1 of concentrating seawater by a reverse osmosis membrane method, that is, a step of obtaining first concentrated water from seawater by carrying out a step of passing the seawater through an NF (Nano Filtration) membrane and a step of concentrating it with an RO (Reverse Osmosis) membrane; a step 2 of obtaining second concentrated water by concentrating the first concentrated water by an evaporation method by which water is evaporated; and a step 3 of dehydrating the second concentrated water to separate the salt and mineral water. <P>COPYRIGHT: (C)2008,JPO&INPIT |
