Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Estimation of Nutrients Reduction Rates to Prevent Eutrophication on the Hwaong Reservoir

화옹호의 부영양화 방지를 위한 영양염류 삭감률 산정

  • Kim, Mi-Ah (Dept. of Environmental Health, Graduate School of Public Health, Seoul National University) ;
  • Kim, Young-Hee (Dept. of Environmental Health, Graduate School of Public Health, Seoul National University) ;
  • Lee, Hong-Keun (Dept. of Environmental Health, Graduate School of Public Health, Seoul National University) ;
  • Hwang, Dae-Ho (Dept. of Environmental Health, Graduate School of Public Health, Seoul National University) ;
  • Kim, Ji-Young (Dept. of Environmental policy and planning, Kyonggi Research Institute)
  • 김미아 (서울대학교 보건대학원 환경보건학과) ;
  • 김영희 (서울대학교 보건대학원 환경보건학과) ;
  • 이홍근 (서울대학교 보건대학원 환경보건학과) ;
  • 황대호 (서울대학교 보건대학원 환경보건학과) ;
  • 김지영 (경기개발연구원 환경정책연구부)
  • Received : 2004.08.12
  • Accepted : 2004.09.23
  • Published : 2004.11.30
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Abstract

In this study, the reduction rates of nutrients were suggested to prevent eutrophication on the Hwaong reservoir in the year of 2008 and 2012. With EPA's WASP6 model, future water quality were simulated. In 2008, T-N would be 1.36mg/L and T-P 0.100mg/L on average. ; In 2012, T-N 2.66mg/L and T-P 0.128mg/L. With all the water quality management plans that the government authorities are carrying out, these results indicate that the reservoir would be reach the eutrophic or hypertrophic state according to the Vollenweider's trophic states. Therefore, the Hwaong reservoir requires additional plans for nutrients management. Here, the target water quality to prevent eutrophication of the reservoir sets into mesotrophic state ; T-N 0.475mg/L and T-P 0.02mg/L.(median of Vollenweider index for mesotropphic state) The reduction rates of nutrients on Namyang and Eoeun streams were estimated with uniform treatment method to meet the goal. The results showed that nutrients from two streams should be reduced up to 78% in 2008, and 84% in 2012. Since the ratio of T-N/T-P would be higher than 16 at target years, T-N was not considered as the limiting factor and was not reduced.

Keywords

References

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