한국응용과학기술학회지 (Journal of the Korean Applied Science and Technology)

  • 제32권4호
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  • Pages.616-622
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  • 2015
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  • 1225-9098(pISSN)
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  • 2288-1069(eISSN)
한국응용과학기술학회 (The Korean Society of Applied Science and Technology)
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선박평형수 처리장치의 cylinder type과 groove type의 살균효과 비교 연구

A Comparison Study on the Sterilization Effect of Ballast Water with Cylinder Type and Groove Type

  • Kang, Ah-Young (Division of Civil, Environmental and Chemical Engineering, Changwon National University) ;
  • Kim, Sang-Pil (Taegwang Heavy Industry) ;
  • Kim, Young-Cheol (Korea Institute of Machinery & Materials) ;
  • Song, Ju-Yeong (Division of Civil, Environmental and Chemical Engineering, Changwon National University)
  • 투고 : 2015.10.09
  • 심사 : 2015.11.10
  • 발행 : 2015.12.30
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초록

IMO에서 규제중인 선박평형수의 처리기술은 현재 대부분 화학적 처리법 및 전기적인 처리방법을 주로 이용하고 있는데 이러한 방법들은 2차오염의 위험을 가지고 있으며 이를 방지하기 위하여 추가적인 장치가 필요하다. 본 연구에서는 전단력을 활용한 물리적인 방법을 이용하여 2차 오염 없이 선박평형수를 처리하는 방법을 연구하였다. 균일장치의 원리를 이용하여 전단응력으로 균을 파쇄시키는 원리인데, 내부 실린더와 외부 실린더의 표면이 매끄러운 경우에는 미끄럼 현상이 나타나 효율적인 살균효과를 얻기가 어려워서 전단응력의 크기를 변화시키는 다양한 요인 가운데 표면의 모양을 다르게 하여 두 가지 type의 장치에 대한 살균 성능을 비교하였다. 기본 장치는 cylinder type이나, 내부 실린더와 외부 실린더에 일정 간격과 깊이로 홈을 파낸 groove type과 멸균성능을 비교하였다. 그 결과 미끄럼을 방지한 groove type에서 cylinder type보다 우수한 결과를 나타내었다.

Current ballast water treatment technologies are applying chemical or electrical treatment technology which are not free from secondary environmental pollution. The purpose of this study is to treat the ballast water by shear stress without an additional environmental pollution and to find out the optimal treatment apparatus. We tried to treat ballast water by applying shear stress with two different type of combination of inner and outer cylinder, such as non-pattern type and groove type. In the case of non-pattern type of inner and outer cylinder, sterilization effect was comparatively low because of a slip between inner and outer cylinder. But in the case of groove type of inner and outer cylinder, sterilization effect was superior to the non-pattern type. With a same revolutional speed of 8000rpm, an extinction effect was acquired in the gap of 1 mm of inner and outer cylinder at non-pattern type, but 3mm of that of groove type.

키워드

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