Journal of the Korean Society of Environmental Restoration Technology (한국환경복원기술학회지)

The Korea Society of Environmental Restoration Technology (한국환경복원기술학회)
권호 표지
DOI QR코드

DOI QR Code

Comparison of Seasonal Nitrogen Removal by Free-Water Surface Wetlands Planted with Iris pseudacorus L.

노랑꽃창포 자유수면습지의 계절에 따른 질소제거 비교

  • Yang, Hongmo (Dept. of Landscape Architecture, Chonnam National University)
  • Received : 2011.01.31
  • Accepted : 2011.02.21
  • Published : 2011.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

Removal rates of $NO_3$-N and TN in the free-water surface wetland system during winter; December, January, February and March, spring and fall; April, May, October and November, and summer; Jun, July, August and September were investigated. The system was established on floodplain in the downstream reach of the Gwangju Stream in 2008. It measures 50 meters in length and 5.5 meters in width. Iris pseudacorus L. grown in pots for about two years were planted in the system. The water stream was funneled in by gravity and its effluent was discharged back in. Volumes and water quality of inflow and outflow were analyzed from December 2008 to November 2010. The inflow was averaged approximately 350 $m^3/day$ and hydraulic residence time was about 3 hours. Average influent and effluent $NO_3$-N concentration was 3.75 and 3.35 mg/L, respectively and $NO_3$-N retention was amounted to 10.6%. Influent and effluent TN concentration were averaged 4.93 and 4.30 mg/L, respectively and TN abatement reached to 12.9%. One-way ANOVA statistics claimed that the average removal rates of $NO_3$-N and TN during winter, spring and fall, and summer were not always the same (p<0.001). The t-Tests of three pairs among $NO_3$-N removal rates of winter, spring and fall, and summer illustrated that the removal rates of winter ($5.04{\pm}1.94$), spring and fall ($10.53{\pm}2.24$), and summer ($18.61{\pm}2.26$) were significantly different each others (p<0.001). Among TN removal rates, the three pairs of t-Tests of three seasons showed that the removal rates of winter ($5.21{\pm}2.51$), spring and fall ($11.71{\pm}3.12$), and summer ($21.53{\pm}4.86$) were significantly different from each others (p<0.001).

Keywords

References

  1. 김유선. 2008. 노랑꽃창포와 창포의 수질정화 능력평가. 한국원예학회지 26(2):72-176.
  2. 양홍모. 2008. 자유수면습지의 잔재물층에 의한 하천수 질소제거 비교. 한국환경복원녹화학회지 11(6):120-129.
  3. 양홍모. 2005. 하천수를 정화하는 갈대습지의 개수부에 의한 질소제거 비교. 한국환경복원녹화학회지 8(1):37-44.
  4. 양홍모. 2003. 고수부지에 조성한 수질정화 자유수면습지의 초기 운영단계 질소제거. 한국환경복원녹화학회지 6(6):41-48.
  5. 환경부. 2003. 수질오염공정시험방법.
  6. 河川環境管理財團. 2000. 植生淨化施設の現狀と事例, 河川環境總合硏究所, Tokoy, Japan.
  7. Bachand, P. A. M., and A. J. Horne. 2000. Denitrification in constructed free-water surface wetlands I:very high nitrate removal rates in a macrocosm study. Ecol. Eng. 14;9-15.
  8. Brix, H. 1996. Role of macrophytes in constructed treatment wetlands (In Proc. 5th Internat. Conf. Wetland systems for water pollution control, Keynote address 2).
  9. Broadbent, F. E., and F. E. Clark. 1965. Denitrification. Agronomy 10:344.
  10. EPA (U.S. Environmental Protection Agency). 1993. Manual-nitrogen control. Office of Research and Development. Washington, D.C.
  11. EPA (U.S. Environmental Protection Agency). 1999. Free-water surface wetlands for waste-water treatment:a technology assessment. pp.4-14-4-21.
  12. Drew, M. C. 1979. Plant responses to anaerobic conditions in soil and solution culture, Curr. Adv. Plant. Sci. 36:1-13.
  13. Faulker, S. P., and C. J. Richardson. 1989. Physical and chemical characteristics of freshwater wetland soils (In Hammer, D. A. eds., Constructed wetlands for wastewater treatment:municipal, industrial and agricultural) Lewis Publishers, Inc. Chelsea, Michigan. pp.41-72.
  14. Gersberg, R. M. Elkins, S. R., Lyons, S. R., & Goldman, C. R. 1985. Role of aquatic plants in wastewater treatment by artificial wetlands. Water. Res. 20:363-368.
  15. Mitsch, W. J., and J. G. Gosselink. 2000. Wetlands, 2nd ed. Van Nostrand Reinhold. New York.
  16. Kadlec, R. H., and R. L. Knight. 1996. Treatment wetlands. CRC Press, Inc. Boca Raton. pp. 717-737.
  17. Kadlec, R. H., and S. D. Wallace. 2009. Treatment wetlands 2nd ed. CRC Press, Inc. Boca Raton. pp.267-348.
  18. Radoux, M. 2005. The impact of Typy Latifolia L. on the treatment of wastewater by surface-flow constructed wetland (In Vymal, J. ed. Natural and constructed wetlands:nutrients, metals and management). Backhuys Publishers, Leiden, The Netherlands. pp.271-280.
  19. Reed, S. C., E. J. Middlebrooks and R. W. Crites. 1995. Natural systems for waste management and treatment. McGraw-Hill, New York.
  20. Spiels, D. J., and W. J. Mitsch. 2000. The effects of seasons and hydrologic and chemical loading on nitrate retention in constructed wetlands:a comparison of low-and high- nutrient riverine systems. Eco. Eng. 14:77-91.
  21. Thunhorst, G. A. 1997. Wetland planning guide for the northeastern United States. Environmental Concern, INC.
  22. Vymazal, J. 1998. Removal mechanisms and types of constructed wetlands (In Vymal, J. ed. Natural and constructed wetlands:nutrients, metals and management) Backhuys Publishers, Leiden, The Netherlands. pp.17-66.