환경보호 분야에서는 국제협약의 원활한 이행을 위해 당사국 간의 긴밀한 협조가 요구되며, MARPOL 73/78 상 보고의무는 해양환경보호를 위한 국제협력의 일환으로서 중요한 역할을 하고 있다. 이 연구에서는 MARPOL 73/78 상 보고요건의 국제법적 의미에 대하여 살펴보고, 당사국들의 보고의무 이행현황을 조사하였다. 이를 위하여 2001년부터 2010년까지 지난 10년간의 MEPC/Circ.318의 각 항목에 따른 MARPOL 73/78 상 보고의무의 이행현황을 분석하였다. 또 다른 한편으로는 이러한 이행현황에 대한 분석을 통해 당사국의 보고의무 준수율을 향상할 수 있는 개선방안을 제시하였다.

This study aimed to evaluate changes in the TN and TP removal efficiencies, depending on whether or not a settling process is applied, in a sequencing batch reactor (SBR) process with a membrane bioreactor (MBR). Nutrient removal was considered in terms of developing an advanced water treatment system for ships in accordance with water quality standards set forth by 227(64). For these purposes, the TN and TP concentrations in the inflow and outflow water were measured to calculate the TN and TP removal efficiencies, depending on whether or not a settling process was used. Water discharged from a bathroom, which was constructed for the experiment, was used as the raw water. The experiment that included a settling process was conducted twice, and the operating conditions were: aeration for 90 min, settling for 30 min, agitation for 15 min, and settling for 15 min for one experiment; and aeration for 150 min, settling for 45 min, agitation for 15 min, and settling for 15 min in the other. Operating conditions for the experiment that did not include a settling process were: aeration for 180 min and agitation for 60 min. The concentration of the mixed liquor suspended solids (MLSS) in the reactor was 3,500 mg/L, while the aeration rate was 121 L/min and the water production rate was 1.5 L/min. For the two experiments where a settling process was applied, the average TN removal efficiencies were 44.39% and 41.05%, and the average TP removal efficiencies were 47.85% and 46.04%. For the experiment in which a settling process was not applied, the average TN removal efficiency was 65.51%, and the average TP removal efficiency was 52.51%. Although the final nutrient levels did not satisfy the water quality standards of MEPC 227(64), the TN and TP removal efficiencies were higher when a settling process was not applied.

UNFCCC was adopted in 1992 in order to prevent global warming. However, as a lack of concrete reduction goal and implementation plan, UNFCCC could not have effectiveness. In 1997, Kyoto Protocol to UNFCCC was adopted and UNFCCC regime started practically binding on the parties. Global warming takes the leading role in changing marine environment such as the rising of water level and sea water temperature. Also, Ocean plays the vital role in storing carbon to prevent global warming. Meanwhile ships which get the propulsion generated by consuming the fossil fuel are identified as GHG source and the discussions regarding the control of GHG emitted from ships are still in progress in IMO. IMO instrument has some legal conflicts with UNFCCC in principle. Therefore, this paper reviews the present UNFCCC regime and UNCLOS. Also, it surveys activities of IMO and analyze the Amendment to MARPOL73/78 Annex VI which entered into force on January 1, 2013. Finally, conclusions suggest the improvements in order to ensure effectiveness the new Amendment to MARPOL73/78 practically.

1973년이 MARPOL의 채택 이래 상당한 경험들이 축적되었다. 그것들은 중요한 형태들의 다양한 부속서가 생성되게 하였으며, 이는 그것들을 더욱 이해하고 따르기 쉽게 하거나, 중요한 부속서의 형태들을 더 의미있게 만들도록 하기 위해서였다. 그런 변화들은 환경을 개선할 수 있는 제도들을 이끌것이며 실행하기 쉽고 정부들이 그 협약을 승인하기 좋도록 할 것이다. marpol 73/78은 106개국에 의해 승인되었고(1998.12.31까지)세계 선보량의 93.88%을 대표하고 있다.