• 한국해양공학회지
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• 제23권4호
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• pp.25-31
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• 2009

To predict pollutants during the flood and dry season in Gwangyang Bay, the net-fluxes and pollutant material budgets of COD, T-N, and T-P were calculated in Gwangyang Bay using a 2-D hydrodynamic model. Calculating the net-flux for each area in Gwangyang Bay showed that the net-fluxes in regions IV, V, and VII were increasing, but those of regions II, III, and VI were decreasing. In budget calculations for COD, T-N, and T-P in Gwangyang Bay, it was estimated that during the dry season the COD is approximately 1.6 times higher than during the flood season. The T-N during the flood season is approximately 7 times higher than during the dry season. However, the material budget for T-P in Gwangyang Bay predicted that it is almost nonexistent. Moreover, the central part of Gwangyang Bay (Region IV) has the highest material budget of overall pollutants.

• 한국물환경학회지
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• 제26권3호
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• pp.420-431
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• 2010

하천형 저수지인 팔당호의 건기시 수질을 모의하기 위하여 단순 물질수지 모델을 개발하였다. 대상 물질은 총인 (TP), 클로로필${\alpha}$ ($Chl.{\alpha}$), 5일 생물학적 산소 요구량 (BOD) 화학적 산소요구량 (COD)이었다. 모델은 지난 20년간의 실측치를 잘 재현하였으며 유기물질의 성인을 밝히는데 이용될 수 있었다. 모델을 통하여 분석한 결과, 팔당호에서 인에 대한 조류의 이용성을 결정하는 임계 수리부하는 약 $1.5m\;d^{-1}$로 나타났다. 팔당호의 $Chl.{\alpha}$, COD, BOD 농도는 임계부하보다 작은 수리부하의 조건에서 생산과 호흡 및 침전과 같은 조류의 변화에 민감하게 반응하였다. 최근 유기오염 저감을 위한 중앙정부와 지방정부의 강도 높은 노력에도 불구하고 팔당호의 수질은 크게 개선되지 않았으며 오히려 COD 농도는 증가하였다. 모델 해석을 통하여 이는 조류 생산량의 증가와 아울러 비점오염원 등에서 외래성 부하가 증가하였기 때문인 것으로 나타났다. 특히 2000~2007년 기간의 조류 기원성 유기물 농도는 전체 유기물 농도의 절반에 해당하는 것으로 추정되었으며, 이는 1988~1994년 기간에 비하여 2.5배, 1995~1999년 기간에 비하여 1.3배에 달하는 수준이었다. 이러한 연구의 결과는 팔당호의 수질개선을 위해서는 조류 발생을 억제하는 것이 필요함을 시사하는 것이었다.

• 환경위생공학
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• 제24권1호
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• pp.1-12
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• 2009

The various environmental problems that we face on today are basically about environmental quality. Since early 1960s affluent material was produced because of remarkable economic growth by many cooperations. However, for the lack of environmental policy, environmental pollutions has been serious. The central government should transfer the producing and consuming structure to environmental affinity through the regulations for developing Korea as a model of environmental nation which takes an active part in global environmental programme and in which the environment and economy are well harmonized. Moreover, the central government should take the lead in prevention of environmental pollution through the direct policies such as strengthening the discharge limit or setting up environmental basic institutions by securing budget for conserving environment. This thesis emphasize on the public institution among many environmental basic institutions for environmental anti-pollution project. It will find the problems with running those institutions, and will suggest the preview of improvement. Also, it is necessary to investigate of variation trend for inflow and pollutant loading to environmental infrastructure as increased of the diffusion rate as established and maintenance of sewer system. The purpose of this study is to investigate for inflow and pollutant loading to environmental infrastructure, and also to provide the method of efficiently maintenance and management. The results obtained were summarized as follows; 1. Survey of actual condition on operation and management of environmental infrastructure was evaluated the propriety of treatment process and problem of plant management. 2. Analysis of pollutant loading contribution for river system of environmental infrastructure with data analysis of water quality measuring network. 3. To investigate on case study for efficiently maintenance and management of environmental infrastructure. The result on this study was provide the method of efficiently maintenance and management with survey for establish and repair of sewer system and survey of actual condition on operation and management of environmental infrastructure in the water area of discharge to Geum River System. Application as guideline for establish and management of environmental infrastructure, and management of Geum River System. Also, application for preliminary data for fulfill-assess of total effluent regulation of water pollution.