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논문 기본 정보

자료유형
학술저널
저자정보
김성열 (경기대학교) 김유택 (경기대학교)
저널정보
한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제19권 제3호
발행연도
2018.6
수록면
236 - 242 (7page)

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In Korea, in particular the south coast, the marine industry has been gradually damaged by red tide. The pollution of offshoreregions and the death of wild and offshore fish-farm fishes have resulted in significant economic losses to fishermen. Theprimary approach employed to remove red tide domestically is to spray red clay. However, not only is it hard to find the effect,but phosphorus and a trace quantities of metal in red clay promote the proliferation of red-tide algae. Therefore, the use ofred clay is not ideal. In this study, a laboratory-sized mock-up test is performed to predict the efficiency of red-tide removal,water current, and flow velocity in the case where an artificial float with its membrane filled with ceramic carriers is installedaround the perimeter of an offshore underwater fish farm. Mock-up devices are classified as circular and scaled-down types. Based on the test with the circular type, the flow velocity had a reduction rate of 78% after the passage of layer 1, and it hadincreased to 81~82% after the passage of layer 2. The reduction rate of red tide was initially 2000 cell/ml at the time it passedlayer 1, and had reduced to between 400 cell/ml and 800 cell/ml after passing layer 2. In the test with the scaled-down type,the reduction pattern of the flow velocity was the same as that of the circular type. In conclusion, the artificial float with aceramic membrane was effective at removing red tide and reduced the flow velocity between membrane layers to increase thestay time of red tide. It was verified that an actual artificial float could secure a sufficient time to remove red tide by causingthe red tide to remain for a longer time between layers to increase the concentration, pumping red-tide microorganisms, andthen removing the red tide through a filter press. It is expected that the use of artificial floats will become an effective measureto remove red tide.

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