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Consideration on the Concentration of the Active Substances Produced by the Ballast Water Treatment System

선박평형수 처리장치의 활성물질 농도에 관한 고찰

  • Received : 2012.04.05
  • Accepted : 2012.06.13
  • Published : 2012.08.25

Abstract

The International Maritime Organization (IMO) adopted the International Convention for the Control and Management of Ships' Ballast Water and Sediments in 2004 to prevent the transfer of aquatic organisms via ballast water. Thirty-four ballast water treatment systems were granted IMO active substance basic approval, among which twenty systems were granted final approval. This paper is an in-depth consideration of the mechanism principles of the treatment systems that received active substance basic or final approval from IMO, and on the concentration of Total Residual Oxidant (TRO). The TRO maximum allowable discharge concentration was reduced by neutralization equipment, resulting with a concentration lower than 0.2 ppm. However, between various treatment systems TRO maximum allowable dosage showed large differences, ranging from 1 to 15 ppm. The discrepancies of treatment allowable dosage concentration between different treatment systems are largely due to the properties of species and water conditions such as the temperature and turbidity, rather than the characteristics of treatment systems and the type or presence of filters etc.

국제해사기구(IMO)는 선박평형수를 통한 수중생물의 이동을 막기 위해, 2004년 선박 평형수와 침전물 통제 및 관리를 위한 국제협약을 채택하였다. 34개 선박평형수 처리장치가 IMO 활성물질 승인을 받았고, 이 가운데 20개 처리장치가 최종승인을 받았다. 본 논문에서는 IMO 활성물질 승인을 받은 처리장치에 대한 작용 원리와 총잔류산화제(TRO) 농도를 고찰하였다. TRO 최대 허용 배출 농도는 중화장치를 통해 낮추어 대부분 0.2 ppm 이하의 농도를 보였으나, 최대 처리 허용 농도는 장치별로 1-15 ppm으로 큰 차이를 나타내었다. 처리장치 별로 TRO 처리 허용 농도의 차이는 처리장치의 특성 및 필터의 유무와 종류 등과의 연관성 보다는 생물 사멸시험 시 생물종 특성과 수온, 탁도 등 수질 특성에 기인하는 바가 크다고 판단된다.

Keywords

References

  1. 김은찬, 2008, 활성물질을 사용하는 선박평형수 처리장치의 IMO 승인절차 고찰, 한국해양환경공학회지 제11권, 4호.
  2. IMO, 2004, "International Convention for the Control and Management of Ship's Ballast Water and Sediments, 2004", IMO BWM/CONF/36.
  3. IMO, 2008a, "Procedure for approval of ballast water management systems that make use of active substances (G9)", IMO Resolution MEPC.169(57).
  4. IMO, 2008b, "Guidelines for approval of ballast water management systems (G8)", IMO Resolution MEPC.174(58).
  5. IMO, 2011, Report of the seventeenth meeting of the GESAMP- Ballast Water Working Group, MEPC 62/2/18.

Cited by

  1. The Study on the Marine Eco-toxicity and Ecological Risk of Treated Discharge Water from Ballast Water Management System Using Electrolysis vol.16, pp.2, 2013, https://doi.org/10.7846/JKOSMEE.2013.16.2.88