Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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A Study on the Sterilization Effect of Ballast Water according to the Combination of Types of Treatment Apparatus

선박평형수 처리장치의 조합에 따른 살균효과에 관한 연구

  • Kang, Ah-Young (Division of Civil, Environmental and Chemical Engineering, Changwon National University) ;
  • Kim, Sang-Pil (Taegwang Heavy Industry) ;
  • Song, Ju-Yeong (Division of Civil, Environmental and Chemical Engineering, Changwon National University)
  • 강아영 (창원대학교 토목환경화공융합공학부) ;
  • 김상필 (태광중공업) ;
  • 송주영 (창원대학교 토목환경화공융합공학부)
  • Received : 2015.07.25
  • Accepted : 2015.09.02
  • Published : 2015.09.30
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Abstract

The purpose of this study is to treat the ballast water by shear stress without an environmental pollution and to find out the optimal treatment conditions. The ballast water problem is issued up as the trade activated and the cargos mobilized. To improve this problem, International Marine Organization(IMO) make the rule about the ballast water treatment with specific restrictions. Although many countries have been studying about the ballast water treatment technology, there is almost no technology that can treat the microorganisms under $50{\mu}m$ without any secondary pollution. In this study, we tried to treat ballast water by applying shear stress as the physical treatment for the sterilization and tried to find out the optimal conditions including the 100% sterilizing rate and the best economic condition.

2차 오염이 없는 물리적 선박 평형수 처리 장치의 조합별 비교를 통하여 비교적 우수한 조합을 밝혀내는 것이 본 연구의 목적이다. 2008년 IMO에서는 선박 평형수 문제를 제제하기 위해 배출 선박 평형수 내 미생물의 농도를 일정 농도로 규제하게 되었다. IMO 규제 농도를 맞추기 위한 멸균 방법으로는 약품을 이용한 화학적 처리, 전기분해를 통한 차아염소산 처리, UV나 오존 및 플라즈마를 이용하는 방법, membrane을 이용하는 방법 등이 있다. 하지만 어느 방법이나 부분적으로 2차오염이나 선체부식 및 살균효율 등의 단점을 가지고 있는 실정이다. 아울러 이런 단점들을 피해가면서 조류와 미생물을 효율적으로 멸균 시킬 수 있는 방법은 현재까지 미비한 실정이다. 본 연구에서 적용된 처리장치는 전단응력을 이용하여 2차 오염을 발생시키지 않으면서 조류와 미생물을 살균시킬 수 있는 물리적 살균처리장치이다. 본 연구에서는 이 장치의 다양한 type별 조합으로 실험하여 살균 가능한 최저 회전속도에 따른 최고 유량 등을 규명하여 상업적 처리 장치의 설계를 위한 기초자료로 삼고자하였다.

Keywords

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