대한환경공학회지 (Journal of Korean Society of Environmental Engineers)

  • 제37권2호
  • /
  • Pages.99-106
  • /
  • 2015
  • /
  • 1225-5025(pISSN)
  • /
  • 2383-7810(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
권호 표지
DOI QR코드

DOI QR Code

하절기 새만금호 유입유사의 물리화학적 특성 분석

Analysis of Physicochemical Characteristics of Suspended Sediments Flowing into the Saemangeum Reservoir in the Summer

  • Oh, Kyoung-Hee (Department of Environmental Engineering, Chungbuk National University) ;
  • Chung, Se-Woong (Department of Environmental Engineering, Chungbuk National University) ;
  • Cho, Young-Cheol (Department of Environmental Engineering, Chungbuk National University)
  • 투고 : 2013.08.20
  • 심사 : 2015.02.26
  • 발행 : 2015.02.28
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

만경강과 동진강으로부터 유입되는 유사가 새만금호의 오염도에 미치는 영향을 조사하기 위하여 만경강과 동진강의 상류부터 새만금호 유입지점까지 각 4개의 유사 트랩을 설치하고 2009년 6월부터 9월까지 유사를 채집하여 유사의 침강률과 이의 화학적 특성을 분석하였다. 만경강과 동진강에서 실험 기간 동안 단위 면적당 유입 유사의 침강률은 각각 $0.01{\sim}5.06kg/m^2/day$와 $0.01{\sim}8.75kg/m^2/day$ 범위였다. 침강률은 하류에서 상류로 갈수록 높았으며, 강우에 의한 영향이 큰 것으로 나타났다. 유사 중 유기물의 농도는 하상 퇴적물에 비해 3.3~9.6배 높았으며, 홍수기 이후에 높은 경향을 나타내어 유역 내 비점오염원으로부터 유입량이 많은 것으로 판단되었다. 총질소와 총인의 오염도도 유기물과 같은 경향을 나타내었다. 이러한 결과로부터 만경강과 동진강으로 유입되는 유사에서 유기물, 총질소, 및 총인의 오염도가 높았으며, 새만금호의 수질 관리를 위하여 유역 오염원에 대한 집중 관리가 필요한 것으로 판단된다.

To estimate the effects of suspended sediments flowing into the Saemangeum Reservoir on the extent of contamination of the reservoir, the suspended sediments were collected with sediment traps, which were installed from the upstream of the Mankyung and Dongjin Rivers to estuary of the reservoir, respectively, and the sedimentation rates and the chemical characteristics of suspended sediments were analyzed. The sedimentation rates in the Mankyung and Dongjin Rivers were ranged from 0.01~5.06 and $0.01{\sim}8.75kg/m^2/day$, respectively. Those were higher to the upstream of rivers, and were mainly affected by flood events. The concentrations of organic matters were from 3.3 to 9.6 times higher than those in the stream sediments and were higher after flood season, indicating the contaminants come from the non-point sources on the basin. The concentrations of total nitrogen and total phosphorus in the suspended sediments showed the same trend with the organic matters. These results indicate that the suspended sediments from the basin of the Mankyung and Dongjin Rivers are highly contaminated and the countermeasures to manage the sources of contamination on the basin are required to maintain the water quality of the Saemangeum Reservoir.

키워드

참고문헌

  1. Son, Y. G., Kim, W. J., Lim, M. H., Kim, L. H. and Khim, J. H., "Characterization of sediment and correlations of pollutants in Dongkin River," Proceeding of the 2006 Autumn Conference of KSEE, Gangneung, pp. 1116-1118(2006).
  2. Kang, P. G., Lee, S. W., Park, H. K., Byeon, M. S. and Kong, D. S., "Study on the release of phosphorus and nitrogen from sediment in Lake Chungju," Proceeding of the 2006 Spring Joint Conference of KSWE and KSWW, Incheon, pp. 1231-1232(2006).
  3. Son, Y. G., Kim, W. J., Kim, L. H., Ahn, J. H. and Khim, J. H., "Determination of sediment loading in Saemangeum Lake," Proceeding of the 2007 Autumn Joint Conference of KSWW and KSWE, Ilsan, pp. 629-633(2007).
  4. Jeong, H. Y., Chung, S. W., Lee, H. S., Ryu, I. G. and Maeng, S. J., "Estimation of sediment load in Saemangeum Reservoir using modified Einstein procedure," Proceeding of the 2009 Spring Joint Conference of KSWE and KSWW, Suwon, pp. 627-628(2009).
  5. Lee, H. W. and Park, S. S., "Long-term trend analyses of water qualities in Saemangeum watershed based on statistical methods," Proceeding of the 2006 Spring Conference of KSEE, Ilsan, pp. 361-368(2006).
  6. Oh, K. H., Yu, M. N. and Cho, Y. C., "Physicochemical characteristics and analysis of pollution potential in the sediments of the rivers flowing into the Saemangeum Reservoir," J. Korean Soc. Environ. Eng., 33(12), 861-867(2011). https://doi.org/10.4491/KSEE.2011.33.12.861
  7. Choi, S., Ahn, J. and Kim, H., "Pollutants discharge estimation in inflow streams of the ManKyeong River watershed," Proceeding of the 2009 Spring Joint Conference of KSWE and KSWW, Suwon, pp. 635-636(2009).
  8. Lee, H. W. and Park, S. S., "Long-term trend analyses of water qualities in Mangyung watershed," J. Korean Soc. Water Qual., 24(4), 480-487(2008).
  9. Lee, H. W. and Park, S. S., "Trend analysis of water quality in Dongjin River watershed," Korean J. Limnol., 42(1), 39-47(2009).
  10. Bender, M. R. and Wood, C. W., "Total phosphorous in soil," Methods of Phosphorus Analysis for Soils, Sediments, Residuals, and Waters, Pierzynski, G. M.(ed), North Carolina State University, North Carolina, pp. 45-49(2000).
  11. Ministry of Environment, "Standard Methods for the Examination of Soil Pollution (Notification No. 2002-122 of the Ministry of Environment)," (2002).
  12. Yoon, J. Y., Lee, H. M., Jeong, S. H. and Jeong, B. G., "A study for management of water quality of Saemangeum basin," Proceeding of the 1999 Autumn Conference of Korea Environmental Sciences Society, pp. 200-201(1999).
  13. Han, K. W., Son, J. K., Cho, J. Y., Kim, H. K. and Hwang, S. A., "Phosphorus fractionations in sediment of Mankyung and Dongjin River," Korean J. Environ. Agric., 24(4), 319-325(2005). https://doi.org/10.5338/KJEA.2005.24.4.319
  14. Lee, S. E., Choi, I. S., Lee, S. K., Lee, I. H. and Oh, J. M., "The evalulation of pollution level and release characteristics by inner productivity in the sediment of lake," J. Environ. Impact Assessment, 21(1), 81-91(2012). https://doi.org/10.14249/EIA.2012.21.1.081
  15. K-water, "A study on the distribution of organic sediment in dam reservoir and its treatment," (1997).
  16. Korea Rural Community Corporation, "A study on the deriving of sediments quality guideline for reservoir dredging and the use of dredged soil," (2005).
  17. Cho, Y. G., "Heavy metals in fine-grained bed sediments of the Mangyeong River, Korea," J. Environ. Sci., 16(5), 657-664(2007).