Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
권호 표지
DOI QR코드

DOI QR Code

Variation of Water Treatment Efficiency during Long-term Operation of Constructed Wetland

인공습지의 장기운영에 따른 수질정화효율 변동

  • 손영권 (건국대학교 환경과학과) ;
  • 윤춘경 (건국대학교 환경과학과) ;
  • 김형중 (한국농어촌공사 농어촌연구원) ;
  • 함종화 (한국농어촌공사 농어촌연구원)
  • Received : 2011.10.05
  • Accepted : 2011.11.07
  • Published : 2011.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

Long-term water treatment performance analysis was conducted for the constructed wetland treating agricultural tailwater. Studied wetland was established in 2001 and operated from June, 2002 to November, 2010. Wetland vegetation cover was shown over 90 % coverage after 2005. According to vegetation development, accumulation of sediment nutrient was observed; Organic Carbon, T-P and T-N. In addition, DO concentration and temperature was decreased in the constructed wetland output. An infiltration rate also significantly decreased due to compaction of wetland soil. A runoff coefficient was increased due to the low infiltration rate after 2005. A T-N, TSS and Chl.a removal rate was maintained constantly. However, the T-P removal rate was slightly decreased along to wetland operation because low DO concentration could increase elution of phosphorus from sediment. After constructing open water, the T-P removal rate was increased. This is because open water could accelerate the reaearation process. Consequently, over three years of vegetation development could be helpful for wetland performance. In addition, DO concentration is important factor to maintain the T-P treatment.

Keywords

References

  1. APHA, 2005. Standard Methods for Examination of Water and Wastewater, 21st edition. Washington: American Public Health Association.
  2. Batzer, D. P. and R. R. Sharitz, 2006. Ecology of Freshwater and Estuarine Wetlands. Berkeley and Los Angeles, CA.: University of California Press.
  3. Carter, M. R. and E. G. Gregorich, 2007. Soil Sampling and Methods of Analysis, 2nd eds. Boca Raton, FL: .CRC Press.
  4. Choi, D. H., K. S. Choi, S. W. Kim, Y. T. Oh, D. S. Kim, S. J. Joh and J. C. Park, 2007. Water Flow Distribution and Sedimentation Characteristics of Particle Materials in the Sihwa Constructed Wetland. Journal of Korean Society of Environmental Engineers 29(4): 425-437.
  5. Ham, J. H., C. G. Yoon, H. C. Kim, W. S. Koo and H. B. Shin, 2005. The Effect of Plant Coverage on the Constructed Wetlands Performance and Development and Management of Macrophyte Communities. Koream J. Limnol. 38(3): 393-402.
  6. Kadlec, R. H. and S. D. Wallace, 2008. Treatment Wetlands, 2nd edn. Boca Raton, FL: .CRC Press.
  7. Kim, H. C., C. G. Yoon, J. H. Ham, J. Y. Han, 2006a. Early Stage Performance of Constructed Wetland System for Nonpoint Source Pollution Control. Korean J. Limnil. 39(4): 481-488.
  8. Kim, H. C., C. G. Yoon, H. Y. Um, H. J. Kim, J. H. Haam, 2008. Analysis of Treatment Efficiency according to Open-water in Constructed Wetland. Journal of Korean Society on Water Quality. 24(6): 709-717.
  9. Kim, S. J., Y. S. Choi, W. K. Bae, 2006b. Performance Study on Pilot-scale Constructed Wetlands in order to Restore Contaminated Stream. Journal of Korean Society on Water Quality 22(3): 546-556.
  10. Lund L. J., A. J. Horne and A. E. Williams, 2000. Estimating denitrification in a large constructed wetland using stable nitrogen isotope ratios. Ecol. Eng. 14: 67-76.
  11. Reed, S. C., R. W. Crites and E. J. Middlebrooks, 1995. Natural Systems for Waste Management and Treatment, 2nd edn. New York: McGraw-Hill.
  12. Spieles, D. J. and W. J. Mitsch, 2000. the effects of season and hydrologic and chemical loading on nitrate retention in constructed wetlands: a comparison of low and high nutrient riverine systems. Ecol. Eng. 14: 77-92.
  13. Vymazal, J., H. Brix, P. F. Cooper, M. B. Green and R. Haberl, 1998. Constructed wetlands for wastewater treatment in Europe. Leiden, The Netherlands: Backhuys.
  14. Yang, H. M., 2005. Comparison of Nitrogen Removal in Reed Wetlands with and Without Open Water Purifying Effluent from a Treatment Pond. J. Korean Env. Res. & Reveg. Tech. 8(1): 37-44.
  15. Yoon, C. G, S. B. Kim, T. Y. Kwun and K. W. Jung, 2008. Development of natural and ecological wastewater treatment system for decentralized community in Korea. Paddy Water Environ. 6: 221-227. https://doi.org/10.1007/s10333-008-0109-y
  16. Yu, H. S., D. H. Kang, B. H. Kwon, 2009. Removal Efficiency of Pollutants in Agricultural Wastewater by Constructed Wetlands on Reclaimed Land in the Goheung Bay. J. of Korean Wetlands Society 11(3): 37-47.