Author
남숙현
Bio: 남숙현 is an academic researcher. The author has contributed to research in topics: Semipermeable membrane & Process control. The author has an hindex of 1, co-authored 3 publications receiving 4 citations.
Papers
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Patent•
03 Apr 2019
2 citations
Patent•
17 Apr 2017
1 citations
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Patent•
02 Jul 2019
TL;DR: An ion exchange membrane regeneration system according to the present invention comprises: a positive electrode cell comprising a positive node solution for supplying electrons; a negative node solution to receive the electrons; and a cation exchange membrane and an anion exchange membrane positioned between the positive node and the negative node to alternately form a flow path as discussed by the authors.
Abstract: An ion exchange membrane regeneration system according to the present invention comprises: a positive electrode cell comprising a positive electrode solution for supplying electrons; a negative electrode cell comprising a negative electrode solution for receiving the electrons; and a cation exchange membrane and an anion exchange membrane positioned between the positive electrode cell and the negative electrode cell to alternately form a flow path. By supplying an aqueous sodium chloride solution to each flow path to regenerate the cation exchange membrane or the anion exchange membrane, reverse electrodialysis or electrodialysis can be performed with high efficiency for a long time.
Patent•
30 Mar 2021
TL;DR: In this article, a dead-zone controlled membrane distillation system was proposed, in which raw water circulates by flowing into and out of the raw water circulation unit; a separation membrane of which one side contacts the raw-water circulation unit and which separates and passes only steam from inflow raw water; a vacuum unit which contacts the other side of the separation membrane and of which the inside is evacuated.
Abstract: The present invention relates to a dead-zone controlled membrane distillation apparatus comprising: a raw water circulation unit in which raw water circulates by flowing into and out of the raw water circulation unit; a separation membrane of which one side contacts the raw water circulation unit and which separates and passes only steam from inflow raw water; a vacuum unit which contacts the other side of the separation membrane and of which the inside is evacuated; and a condensing unit which contacts the vacuum unit and in which cooling water circulates by flowing into and out of the condensing unit.
Patent•
17 Jun 2021
TL;DR: In this paper, a real-time multi-fluorescence spectroscopy device and a parallel factor analysis device were used to monitor the hydroxyl radical scavenging index in water.
Abstract: Provided are a system for monitoring a hydroxyl radical scavenging index in water by using a real-time multi-fluorescence spectroscopy device and a parallel factor analysis device and a method therefor, wherein the system monitors the hydroxyl radical scavenging index in water by using the real-time multi-fluorescence spectroscopy device and the parallel factor analysis device, whereby it is possible to monitor the properties of organic matter in target water through a continuous flow analysis method without using the existing indicator matter, rhodamine B. In addition, in a water treatment system having an advanced oxidation process (AOP) applied thereto in which ozone, ultraviolet rays, hydrogen peroxide, and the like are combined, it is possible to simply calculate the hydroxyl radical scavenging index in the target water through an organic matter characteristic index for each component obtained by classifying the characteristic structure of organic matter in water using real-time fluorescence spectroscopy by means of a parallel factor (PARAFAC) model. Accordingly, the amount of chemical injection and the amount of ultraviolet irradiation, which are process control variables, can be controlled, and under given operating variable conditions, the removal rate of target matter in water is predicted, whereby the system can also be used as a diagnostic tool for process evaluation in the advanced oxidation process. Furthermore, the system can provide operational convenience that enables process control while reducing the amount of power consumed in the advanced oxidation process even when the type of target matter and the water quality characteristics of raw water change.
Patent•
25 Mar 2021
TL;DR: In this article, a dead-zone controlled membrane distillation system was proposed, in which raw water circulates by flowing into and out of the raw water circulation unit; a separation membrane of which one side contacts the raw-water circulation unit and which separates and passes only steam from inflow raw water; a vacuum unit which contacts the other side of the separation membrane and of which the inside is evacuated.
Abstract: The present invention relates to a dead-zone controlled membrane distillation apparatus comprising: a raw water circulation unit in which raw water circulates by flowing into and out of the raw water circulation unit; a separation membrane of which one side contacts the raw water circulation unit and which separates and passes only steam from inflow raw water; a vacuum unit which contacts the other side of the separation membrane and of which the inside is evacuated; and a condensing unit which contacts the vacuum unit and in which cooling water circulates by flowing into and out of the condensing unit.