Korea University Research and Business Foundation

Research Triangle Institute

Dan Dan Dong

Jae Woo Lee

Jun Ho Seo

Ou Kyung Choi

Gyu Dong Kim

Gyeong Su Kim

Young Chul Choi

Xin Zhao

Provided is a desalination device using a solvent extraction method, comprising: a first mixing tank composed of a feed water inlet into which feed water comprising salt ions and water molecules flows, a first solvent inlet into which a first solvent selectively reacting more with the water molecules than with the salt ions flows, a first mixing tank body in which the feed water and the first solvent are mixed so as to form a mixed water, and a mixed water outlet through which the mixed water is discharged; a first separation tank composed of a mixed water inlet which communicates with the mixed water outlet so that the mixed water flows therein, a first separation tank body in which brine containing salt ions of the feed water and first treatment water formed from mixing the water molecules of the feed water and the first solvent of the mixed water are separated by layer, and a first treatment water outlet through which the first treatment water is discharged; a second mixing tank composed of a first treatment water inlet which communicates with the first treatment water outlet so that the first treatment water flows therein, a second solvent inlet into which a second solvent selectively reacting more with the first solvent than with the water molecules of the treatment water flows, a second mixing tank body in which the first treatment water and the second solvent are mixed so as to form second treatment water, and a second treatment water outlet through which the second treatment water is discharged; and a second separation tank composed of a second treatment water inlet which communicates with the second treatment water outlet so that the second treatment water flows therein, a second separation tank body in which the water molecules of the first treatment water and a composite solvent formed from mixing the first solvent of the first treatment water and the second solvent of the second treatment water are separated by layer, and a fresh water outlet through which fresh water composed of the water molecules is discharged.

Desalination device using solvent extraction method, and desalination method using same

Disclosed is a desalination apparatus using a solvent extraction scheme. The desalination apparatus using a solvent extraction scheme includes a source water supply module configured to supply source water including salt of a first concentration and water, a functional solvent supply module configured to supply a functional solvent, of which the solubility in water varies according to temperature, a mixing module configured to mix the source water from the source water supply module and the functional solvent from the functional solvent supply module, a first separation module configured to receive mixture water, in which the source water and the functional solvent are mixed, from the mixing module, and dissolve the water contained in the source water in the functional solvent, a salt crystallization module configured to receive the source water including salt of a second concentration that is higher than the first concentration, from which the water has been removed, from the first separation module, and a second separation module configured to receive the functional solvent, in which the water has been dissolved, from the first separation module, and thermally separate the water and the functional solvent at a second temperature that is higher than the first temperature.

Desalting apparatus using solvent and the method thereof

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Sejong-si, South Korea

Dan Dan Dong