Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Estimation of Dissolved Oxygen in Streams using Reaeration, 1st Production and Respiration Rates

재포기 계수, 1차 생산율 및 호흡률을 이용한 하천의 용존산소 추정

  • Published : 2009.06.30
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Abstract

Dissolved oxygen is considered as one of the important water-quality constituents in streams from one century ago and fishes perish in low dissolved oxygen concentration. Environmental scientists and engineers have introduced the deterministic model to estimate dissolved oxygen concentration of streams and recommended the use of the Delta Method (DM), Approximate Delta Method (ADM), Extreme Value Method (EVM) and Optimization Method (OPT) which can be applied in no spatial variation of dissolved oxygen. The diurnal or annual variation of dissolved oxygen is mainly determined from the parameters such as reaeration rate, 1st production rate and respiration rate which are related to dissolved oxygen. Each method was briefly introduced and applied to two sampling sites of Anseong Stream watershed in this paper. The limitation, advantages and disadvantages of each method were reviewed and analyzed after running the each method. From these analyses, the benefit-cost approach to estimate dissolved oxygen effectively in streams was recommended.

용존산소는 하천의 중요한 수질관리 항목중의 하나로 1세기 전부터 언급되어 왔으며, 농도가 낮을 경우 물고기 폐사를 유발하기도 한다. 환경과학자 및 공학자들은 하천의 용존산소 파악을 위한 결정론적 모델을 제안하였으며, 용존산소가 공간적으로 변하지 않을 경우 적용 가능한 델타 방법(Delta Method), 근사 델타 방법(Approximate Delta Method), 극한값 방법(Extreme Value Method) 및 최적화 방법(Optimization Method)등을 소개하였다. 이 방법들은 주로 용존산소와 관련 있는 매개변수 즉, 재포기 계수, 1차 생산율 및 호흡률 등을 산정하여, 이로부터 일주기 또는 년주기 용존산소를 파악한다. 본 논문에서는 용존산소 파악을 위한 각 방법을 간단히 소개하며, 안성천 유역의 금석천 및 안성천 본류, 두 지점에 적용하여 각 방법의 한계와 장 단점을 파악하였다. 이를 기초로 비용/효과적인 용존산소 파악 방법을 제안하였다.

Keywords

References

  1. Steven C. Chapra, Surface Water-Quality Modeling, McGraw-Hill, New York, pp. 347-364(1997)
  2. O'Connor, D. J. and Di Toro, D. M., "Photosynthesis and oxygen balance in streams," J. Sanit. Engrg., 96(2), 547-571(1970)
  3. Chapra, S. C. and Di Toro, D. M., "Delta Method for Estimating Primary Production, Respiration, and Reaeration in Streams," J. Environ. Eng., 117(5), 640-655 (1991) https://doi.org/10.1061/(ASCE)0733-9372(1991)117:5(640)
  4. Butcher, J. B. and Covington, S., "Dissolved-Oxygen Analysis with Temperature Dependence," J. Environ. Eng., 121(10), 756 -759(1995) https://doi.org/10.1061/(ASCE)0733-9372(1995)121:10(756)
  5. McBride, G. B., "Calculating Stream Reaeration Coefficients from Oxygen Profiles," J. Environ. Eng., 128(4), 384-386(2002) https://doi.org/10.1061/(ASCE)0733-9372(2002)128:4(384)
  6. McBride, G. B. and Chapra, S. C., "Rapid Calculation of Oxygen in Streams: Approximate Delta Method," J. Environ. Eng., 131(3), 336-342(2005) https://doi.org/10.1061/(ASCE)0733-9372(2005)131:3(336)
  7. Wang, H., Hondzo, M., Xu, C., Poole, V., and Spacie, A., "Dissolved Oxygen Dynamics of Streams Draining an Urbanized and an Agricultural Catchment," Ecol. Model., 160, 145-161(2003) https://doi.org/10.1016/S0304-3800(02)00324-1
  8. 황성규, 델타 방법을 이용한 하천의 용존산소 매개변수 추정, 한경대학교, 석사학위 논문(2008)