• Journal of the Korean Society for Marine Environment & Energy
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• v.1 no.1
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• pp.83-92
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• 1998

Heavy metals concentration in superficial sediment of effluent discharging area was rapidly increased by annual loadings of Zn(8.465 Kg), Ni(3,291 Kg), Cu(1,636 Kg) and Pb(1,250 Kg) from sewage effluent of 63×10/sup 6/ m³/yr. In a consequent result, specially the concentrations of Zn and Cu in the sediment were three times higher than preindustrial reference values. The evaluation by multiple ecological risk indices showed that heavy metals contamination in sediment of discharging area was 'heavily Polluted level' by sediment quality criteria and increased 2.6 times by the degree of contamination. It was also judged that toxicological effects of sediment receiving the primary effluent would occasionally (16～47%) occur by guidelines for adverse biological effect.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2004.09a
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• pp.299-301
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• 2004

댐수몰 예정지 상류에 일반적으로 분포하는 폐광산, 축산단지, 군사격장 등의 점오염원에 의하여 댐수몰 예정지 상류지역의 지하수 및 토양이 오염된 사례가 많으며, 이러한 오염은 댐 건설을 위한 적지선정시 장애요소로 작용하고 있고, 댐 건설중에도 댐저수지 수질을 지속적으로 악화시키는 요인들로 알려져 있다. 특히, 지하수내에 잔존하는 오염물들은 지하수 유동특성상 장기간에 걸쳐 서서히 진행되므로, 댐건설이 완료된 담수후에도 지속적으로 수질에 영향을 미치게 된다. 이에 따라 국내외에 수행되었거나 진행중인 댐수몰 예정지의 오염조사 평가 및 복원ㆍ정화 사례를 조사하는 한편, 현재 댐건설이 예정된 지역에 대하여 직접적인 현장조사를 실시함으로써 국내에 적합한 조사ㆍ평가 기법과 복원ㆍ정화 기법을 개발, 제안하고자 한다.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.27 no.5
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• pp.659-672
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• 1994

Four simple plotting techniques using the distribution of individuals among species were applied and the results discussed to evaluate the methods for detecting organic pollution-induced perturbation in marine benthic communities in Chinhae Bay, Korea: Rarefaction method, Abundance-Biomass Comparison method, Log-Normal Distribution method and Rank-Frequency Diagram method. Their distribution curves offered more information on the community structure than other frequently used diversity indices and distinguished clear evidence of an effect of environmental pollution with gradient. However, the Abundance-Biomass Comparison method could not be considered applicable due to the presence of larger slowly growing K-strategists in a polluted area of the inner Chinhae Bay, Korea.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.12 no.19
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• pp.49-56
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• 1989

본 논문은 대도시권에 있어서, 날로 심각해지고 있는 자동차 배출가스(NOx)의 대기 오염문제를 효과적으로 해결하기 위하여 대기 오염량을 짧은 기간내에 분석, 평가가 가능한 $\mathbb{\ulcorner}$자동차 오염 배출량 평가시스템$\mathbb{\lrcorner}$을 구축하여, 서울 대도시권에 이를 적용시켰을때 서울특별시의 대기 오염량의 삭감 효과를 평가한다.

• Journal of Advanced Marine Engineering and Technology
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• v.35 no.8
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• pp.1124-1131
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• 2011

This study performed the prediction about the indoor contaminant's diffusion characteristics which can be affected by the mechanical ventilation system on a training ship. The results are as followings. It is clear that the contaminants are spread to most of the indoors, regardless of the contamination beginning zone. About 65~100 minutes later, the contaminant densities of whole indoor zones are evaluated as clean. Comparing the contamination beginning zone being located at higher deck(scenario A) to the contamination beginning zone being located at lower deck(scenario B), although the contaminant density by scenario A is 10 times higher than that by scenario B, the number of contaminated zones are 50% less. The contaminant densities are evaluated as to be rapidly decreased when the outside air induction ratio against design volume is over 75%.

• Journal of the Korea Organic Resources Recycling Association
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• v.32 no.2
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• pp.15-25
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• 2024

In this study, the regeneration effect of pressurized water and ultrasonic cleaning was investigated for contaminated filter cloth from the sewage sludge filter press process. For this purpose, contaminated filter cloth was collected from a 3-ton sewage sludge hydrothermal carbon treatment filter press. First, the contamination characteristics were analyzed. According to the location of the filter cloth, air permeability and unit mass were measured, and compared with the values of a new filter cloth. Next, the results were mapped over the entire area to evaluate the contamination characteristics. Finally, pressure cleaning at 3 bar and ultrasound at frequencies of 34, 76, 120, and 168 kHz were performed on the contaminated filter cloth. In addition, the cleaning efficiency was evaluated by 3 levels of contamination degree. As a result, pore contamination occurred mainly at the bottom and both sides of the filter cloth, where the filter material was continuously injected and compressed. Surface contamination appeared evenly over the entire area. As a result of washing, air permeability increased by 1.3-3.1%p and contaminant removal was by 2.7-4.4% under pressure. In ultrasonic cleaning, air permeability increased by 12.5-61.5%p and contaminants were removed by 2.7-29.2%. In ultrasonic cleaning the lower the frequency, the higher air permeability and contaminant removal rate. Also, The higher pore contamination level, the better the air permeability improvement and contaminant removal.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.04a
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• pp.273-274
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• 2000

대기오염의 현황을 인지하고 현실적인 관리를 하기 위해서는 대기오염 물질의 배출량을 산정하는 것이 매우 중요하다. 이를 통해 대기오염 모델의 입력자료, 주요 배출원의 파악 및 기여정도를 평가할 수 있으며, 대기관리정책의 수립 및 평가의 기초자료로 사용될 수 있다. 미국 Aerometric Information Retrieval System(AIRS)과 유럽 CORINAIR(EU 내에서 data 호환을 위한 규약)의 경우에는 대기오염물질 배출량 정보를 WWW(World Wide Web：이하 WWW) 상에서 공개함으로써 배출량 연구의 공유와 표준화가 이루어져 있다. (중략)

• Journal of Environmental Impact Assessment
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• v.26 no.3
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• pp.207-216
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• 2017

Several bioassays have been performed for assessment of the impact of polluted sediments. The direct exposure method using sediments is limited by difficulty controlling feeding and its effects on organisms. Furthermore, only macro-organisms and benthic organisms are used. To evaluate the potential application of sediment elutriate as a complementary strategy for impact assessment, copepods, small organisms with a short life cycle, were exposed to sediment elutriates, and several end-points were measured. As a result, sediment elutriates prepared from polluted sites caused growth retardation in marine copepods. In terms of molecular biomarkers, antioxidant-related and chaperone protein gene expression levels were increased in a dose- and time-dependent manner. Thus, we suggest that sediment elutriate tests can provide an effective alternative for toxicity assessment using whole sediment samples. Further studies are required to obtain sufficient data for future applications.

• Proceedings of the Korea Water Resources Association Conference
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• 2010.05a
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• pp.1139-1143
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• 2010

대청호 수질관리를 위한 대책 수립시 상류유역의 유출 및 오염부하배출 특성을 평가하는 것이 중요하다. 유역의 수환경 영향을 평가하기 위해서 복잡한 수문 수질 모델을 이용하는데 사용자 편의성을 고려한 모델 개발과 이용이 필요하다. L-THIA ArcView GIS 모형은 토지이용도, 토양도, 일강우 자료만으로 직접유출의 모의가 가능하여 전 세계적으로 널리 이용되고 있다. 본 연구에서는 L-THIA ArcView GIS 모형을 이용하여 대청호 상류유역인 안내천, 월외천 유역의 직접유출 및 비점오염 배출부하 특성을 평가하였다. 직접 유출량 평가 결과, 결정계수($R^2$)와 유효지수(EI)가 월외천 유역 및 안내천 유역에서 각각 0.95, 0.93 및 0.81, 0.71로 나타나, L-THIA ArcView GIS 모형이 실측치를 잘 재현하는 것으로 나타났다. 강우유출수에 포함된 SS 및 T-P 오염부하량 평가결과, 결정계수($R^2$)가 월외천 유역과 안내천 유역에서 각각 0.53, 0.95 및 0.89, 0.89로 평가되었다. 또한 유효지수(EI)가 월외천 유역과 안내천 유역에서 각각 0.44, 0.95 및 0.98, 0.99로 평가되었다. SS 부하량 평가 결과에서 월외천 유역이 안내천 유역보다 정확성이 낮은 것은 지역특성에 따라 SS 부하량 차이가 크기 때문이다. 따라서 L-THIA ArcView GIS 모형의 지속적인 개선이 이루어진다면 대청호 만입부 상류유역에서의 각종 수질관리대책 평가에 활용될 수 있을 것으로 판단된다.

• Journal of Soil and Groundwater Environment
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• v.13 no.6
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• pp.1-16
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• 2008

There are generally two types of groundwater vulnerability assessments. Intrinsic vulnerability is based on the assessment of natural climatic, geological and hydrogeological attributes and specific vulnerability relates to a specific contaminant, contaminant class, or human activity. Several methods to assess groundwater vulnerability, which are based on hydrogeologic setting and socio-economical environment, have been developed in USA and Europe. A Modified-DRASTIC model including a lineament factor has been developed in South Korea, but it still has some limitations. To develop a solid and applicable method in this country, many data of quality, hydraulic features, GIS data, and pollution source, produced from a Basic Survey based on Article 5 of the Groundwater Act and other research projects, need to be collected, analyzed and verified introducing the previous methods.