Nitrate Removal Rate in Reed Wetland Cells of a Pond-Wetland Stream Water Treatment System

하천수정화 연못-습지 시스템의 갈대 습지셀 초기 질산성질소 제거

  • Published : 2002.12.31


Nitrate removal rate in three wetland cells was examined. The acreage of each cell was 150 $m^2$. They were a part of a stream water treatment demonstration system which was composed of two ponds and six wetland cells. Earth works far the pond-wetland system were finished from April 2000 to May 2000 and reeds were planted in the three cells in May 2001. Waters of Sinyang Stream flowing into Kohung Esturiane Lake located southern coastal area of Korean Peninsula were pumped into a primary pont Effluents from a secondary pond were funneled into the three cells. Volumes and water quality of inflow and outflow were analyzed from July 2001 through December 2001. Inflow and outflow averaged 20 $m^3/d$ and 19.3 $m^3/d$, respectively. Hydraulic retention time was 1.5 days. Average influent and effluent nitrate concentration was 2.30 mg/L, 1.75 mg/L, respectively. Nitrate removal rate in the three cells averaged 80.9 $mg/m^2/day$. Seasonal changes of nitrate retention rates were closely related to those of wetland temperatures. Full growth of reeds within a few years can develope litter-soil substrates beneficial to the denitrification of nitrate, which may lead to increases of the nitrate retention rates.


nitrate;wetland;water treatment system


  1. EPA (1999) Manual: Constructed Wetlands Treatment of Municipal Wastewaters, Office of Research and Development, Cincinnati, Ohio
  2. Kadlec, R and Knight, R. (1996) Treatment Wetlands. CRC Press, Boca Raton, FL. Kessler, E., Jansson, M., eds. 1994. Wetlands and lakes as nitrogen traps, Special Issue of ambio 23, 319-386
  3. Bartlett, M. S., Brown, L. C., Hanes, N. B. and Nickerson, N. H. (1979) Denitrification in freshwater wetland soil, J. Environ. Qual. 8, 460-464
  4. Stengel, E., Carduck, W. and Jebsen, C. (1987) Evidence for denitrification in artificial wetlands. In: Reddy, K. R. and Smith, W. H. Editors, 1987. Aquatic Plants for Water Treatment and Resource Recovery Magnolia Publishing, Orlando, FL, p.543-550
  5. Cooke, J. G. (1994) Nutrient transformations in a natural wetland receiving sewage effluent and the mplications for waste treatment, Water Sci. Technol. 29, 209-217
  6. 양흥모 (1999) 수자원보전을 위한 점원 및 비점원 오염물의 자연생태적 친환경적 처리 인공습지 및 연못-습지 시스템, 한국수자원학회지 32(5), 111-113
  7. 양흥모 (2002) 담수호 수자원보전을 위한 수질정화 연못-습지 시스템의 초기처리수준, 한국환경복원녹화학회지 13, 64-71
  8. 환경부. (2000) 수질오염공정시험방법
  9. Bachand, P. A. M. and Horne, A. J. (2000) Denitrification in constructed free-water surface wetlands. I. Very high nitrate removal rates in a macrocosm study, Ecol. Eng. 14, 9-15
  10. Faulker, S. P. and C. J. Richardson. (1989) Physical and Chemical Caracteristics of Freshwater Wetland Soils in Hammer, D. A. (ed.), Constructed Wetlands for Wastewater Treahnent: Municipal, Industrial and Agricultural, Lewis Publishers, Inc., Chelsea, Michigan. p.41-72
  11. Phipps, R. G. and Crumpton, W. G. (1994) Factors affecting nitrogen loss in experimental wetlands with different hydrologic loads, Ecol. Eng. 3, 399-408
  12. Broadbent, F. E and Clark, F. E. (1965) Denitrification, Agronomy 10, 344
  13. Zhu, T. and Sikora, F. J. (1994) Ammonium and nitrate removal in vegetated and unvegetated gravel bed microcosm wetlands, In: Proc. 4th Int. Conf. on Wetland Systems for Water Pollution Control Guangzhou, China, p.355-366
  14. Reilly, J. F., Horne, A. J. and Miller, C. D. (2000) Nitrate removal from a drinking water supply with large freesurface constructed wetlands prior to groundwater recharge, Ecol. Eng. 14, 33-47
  15. Watson, J. T. and Hobson, J. A. (1988) Hydraulic design considerations and control structures for constructed wetlands for wastewater treatment, In: Hammer, D. A. Editor, 1988, Constructed Wetlands for Wastewater Treatrnent: Municipal, Industrial, and Agricultural Lewis, Chelsea, MI, p.379-392
  16. Mitsch, W. J. and Gosselink, J. G. (1993) Wetlands, 2nd ed. Van Nostrand Reinhold (now J. Wiley & Sons), New York
  17. Brodrick, S. J., Cullen, P. and Maher, W. (1988) Denitrification in a natural wetland receiving secondary treated effluent. Water Res. 22, 431-439
  18. US Environmental Protection Agency. (1975) Process Design Manual for Nitrogen Control. October 1975
  19. Yang. H. M. (1992) Ecological Design of Estuarine Environment for a Sustainable Urban Ecosystem, PhD Dissertation, University of California Berkeley