대한환경공학회지 (Journal of Korean Society of Environmental Engineers)

  • 제35권10호
  • /
  • Pages.756-762
  • /
  • 2013
  • /
  • 1225-5025(pISSN)
  • /
  • 2383-7810(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
권호 표지
DOI QR코드

DOI QR Code

농업용 저수지 준설토의 처리 공법에 따른 경제성 분석

Economical Feasibility of the Treatment Methods of the Dredged Sediments from Contaminated Agricultural Reservoirs

  • Oh, Kyoung-Hee (Department of Environmental Engineering, Chungbuk National University) ;
  • Cho, Young-Cheol (Department of Environmental Engineering, Chungbuk National University)
  • 투고 : 2013.03.09
  • 심사 : 2013.09.30
  • 발행 : 2013.10.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

농업용 저수지의 수질과 저서환경을 개선하기 위해 저수지로부터 제거된 퇴적물의 친환경적 처리 방안을 모색하기 위해 실시된 퇴적물처리 시범사업의 경제성을 분석하였다. 비용은 집행된 사업비로 산출하였으며, 편익은 퇴적물 재활용으로 인한 폐기물 처리비용의 절감, 퇴적물 제거로 인한 침강지 건설비용의 절감, 저수지 내용적 증가로 인한 용수 확보 등의 3가지 요소로 설정하였으며, 이를 대체비용법을 이용하여 화폐화하고 현재가치화하였다. 편익 비용 비율(B/C)을 구하였을 때, 대상저수지에 따라 달랐으나 전체 사업의 B/C 값은 1.32로 경제성이 높은 것으로 평가되었다. 준설토 처리 공법에 따른 경제성을 분석한 결과, 응집침전 공법, 기계탈수공법, 열반응안정화공법, 토양개량안정화공법의 순으로 경제성이 높았다. 기계탈수공법의 경우 타 공법에 비해 처리토의 재활용이 쉬우며, 2차 오염을 발생하지 않고, 경제성이 뛰어나기 때문에, 저수지로부터 제거된 퇴적물을 처리하기에 가장 적합한 방법인 것으로 평가되었다.

The economical feasibility was conducted to find the adequate method to treat the dredged sediments from agricultural reservoirs in a pilot project that had been operated to improve the quality of water and benthic environments by dredging of contaminated sediments. For benefit/cost (B/C) analysis, the net expenses were considered as the costs of project, and the benefits were calculated from the saving of waste-treatment cost through reuse of dredged sediment, the saving of construction cost of settling pond, and the values of retained water by dredging. Although the economic feasibility depended on the sites of operation, the average B/C value of the pilot project was estimated as 1.32, indicating this project is economically feasible. Depending on the treatment methods, the B/C values were in the order of the methods of coagulating sedimentation, machinery dewatering, stabilization through exothermic reaction, and soil improvement and stabilization. The machinery dewatering method is estimated as the most adequate one to treat the dredged sediments because of the minimum riskiness of secondary pollution, the recyclability, and its economic feasibility.

키워드

참고문헌

  1. Korea Rural Community Corporation, Statistical Yearbook of Land and Water Development for Agriculture in 2010 (2011).
  2. Korea Environment Institute, Management Plan of Contaminated Sediments in Reservoirs and Rivers(1998).
  3. Kardinaal, W. E. A. and Visser, P. M., "Dynamics of cyanobacterial toxins," Harmful Cyanobacteria, Huisman, J., Matthijs, H. C. P. and Visser, P. M. (eds), Springer, Dordrecht, The Netherlands. pp. 41-64(2005).
  4. Park, H. K., "Survey method relating freshwater phytoplantkon for the management of water resources," J. Kor. Soc. Environ. Eng., 29(6), 593-609(2007).
  5. Oh, K. H., Jeong, D. H., Shin, S. H. and Cho, Y. C., "Simultaneous quantification of cyanobacteria and Microcystis spp. using real-time PCR," J. Microbiol. Biotechnol., 22(2), 248-255(2012). https://doi.org/10.4014/jmb.1109.09051
  6. Lee, Y. S. and Lee, K. S., "A study on release characteristics of sediment and its impacts on water quality in Daechung Dam Reservoir," Kor. Sci. Environ. Impact Ass., 9(2), 99-107(2000).
  7. Kim, D. H., "A study on the measurement of nutrients release from sediment," J. Environ. Sci., 11(12), 1333-1337 (2002).
  8. Kim, H. I., "A pilot project for treatment of sediment from agricultural reservoirs using environment-friendly recycling technologies," Rural Environ. Eng. J., 102, 118-129(2009).
  9. Cho, Y. C. and Kim, H. I., "A project for treatment of sediment from agricultural reservoirs for foundation of green growth," Rural Resour., 52(2), 45-52(2010).
  10. KARICO, A Study on the Deriving of Sediments Quality Guideline for Reservoir Dredging and the Use of Dredged Soil(2005).
  11. Nam, J. H., "Economical valuing the multifunctionality roles of agriculture and rural areas," Thesis of Master Degree in Korea University(2010).
  12. Ministry of Environment, A Study of Development of Guide for Benefit/Cost Analysis of Environmental Policy(2003).
  13. Ministry of Government Legislation, Theory and Practice of Regulatory Reform of Office of Management and Budget in USA(2008).
  14. Kwon, K. H., "The meaning of environment examined through cost-benefit analysis and analytic hierarchy process," Environ. Law Rev., 32(3), 161-190(2010).
  15. Koh, J. M., Kim, K. M. and An, Y., "A case study on sludge dredging for water quality improvement in reservoir," 2005 Geotechnical Engineering Conference, KSAE, pp. 729- 731(2005).
  16. Korea Rural Community Corporation, Post-Report of Pilot Project for Treatment of Sediment in Agricultural Reservoirs (2011).
  17. Ministry of Agriculture and Forestry, Tips for Management of Dredging Project of Reservoirs(2002).
  18. Korea Environment Institute, Freshwater Sediment Management and Beneficial Use of Dredged Material(2010).
  19. Jeong, D. J., "Economic validity of agricultural water development: Case study of Icheon City and Yeoju-Gun," J. Rural Development, 31, 113-136(2008).
  20. Ministry of Public Administration and Security, Inspection Guide for Investment and Financing for Local Finance(2011).
  21. Lee, J. H. and Park, M. S., "Case investigation of entrance settling pond and phosphorus treatment facility for water quality improvement of the Saemangeum Reservoir," Water Future, 45(10), 34-41(2012).
  22. Bae, D. H. and Jeong, I. W., "The desirable management for basin according to climate change," Symposium on the 13th World Water Day, pp. 19-35(2005).
  23. Leem, S. J., "The theory of cost-benefit analysis and application model for water conservation programs," J. Political Sci. Commun., 8(1), 98-123(2005).