Improvement and Application of Total Maximum Daily Load Management System of Korea: 2. Determination of Margin of Safety and Allocation of Pollutant Loads

우리나라 오염총량관리제도의 적용 및 개선: 2. 안전율 산정 및 삭감부하량 할당

  • Kim, Kyung-Tae (Department of water resources, Kunhwa Consulting & Engineering Co., Ltd) ;
  • Chung, Eun-Sung (Engineering Research Institute, Seoul National University) ;
  • Kim, Sang-Ug (Land, Transport and Maritime Affairs Team, National Assembly Research Service) ;
  • Lee, Kil Seong (Department of Civil and Environmental Engineering, Seoul National University)
  • 김경태 ((주) 건화 수자원부) ;
  • 정은성 (서울대학교 공학연구소) ;
  • 김상욱 (국회입법조사처 경제산업조사실 국토해양팀) ;
  • 이길성 (서울대학교 건설환경공학부)
  • Received : 2008.08.27
  • Accepted : 2010.01.20
  • Published : 2010.01.30

Abstract

This study proposes the improvement of the present Total Maximum Daily Load (TMDL) management system of MOE (Ministry of Environment). The margin of safety (MOS) is calculated by a method using standard error and a method using variability and uncertainty. The allocation of pollutant loads are calculated using three methods, equal load reduction method, equal percent removal method and method using equity standards. This study applied the improved TMDL management system to the Anyangcheon watershed. Since MOS varies from 12% to 44% due to the high variability of measured and simulated data, it must not be ignored in the TMDL. The method using equity standards is the most proper in this application since the others produced unrealistic allocations. Area, runoff, water use quantity, population and budget are considered for equity standards. This study shows that this allocation method can be also applicable for the administrative units as well as the sub-watersheds. Finally, Hydrologic Simulation Program-FORTRAN (HSPF) with the allocated pollutant load was used to confirm whether it satisfy the water quality standard or not. This study will be helpful to improve the MOS and allocation system TMDL in the future.

Keywords

References

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