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비시가화지역에서 비점오염물질과 입자성물질의 유출 상관성
박지영(Ji Young Park),배상호(Sang Ho Bae),윤영한(Young H. Yoon),임현만(Hyun Man Lim),박재로(Jae Roh Park),오현제(Hyun Je Oh),김원재(Weon Jae Kim) 大韓環境工學會 2012 대한환경공학회지 Vol.34 No.11
강우시 상당 부분의 비점오염물질은 입자성물질에 흡착된 형태로 유출되기 때문에 비점오염물질의 유출 거동을 보다 정확하게 이해하기 위해서는 입자성물질과의 상관성을 정량적으로 파악하는 것이 중요하다. 그러나 강우시 오염물질별 유출 특성과 입도분포와의 상관성에 대한 연구사례는 매우 부족한 실정으로, 특히 도시화가 진전되지 않은 비시가화지역을 대상으로 한 국내 연구는 보고된 예가 거의 없다. 본 연구에서는 논, 밭 및 임야 등으로 구성된 소규모 비시가화지역(유역면적 52.8 ha)을 선정하여 다양한 규모의 강우사상별 유출특성을 조사하고, 오염물질의 유출특성과 입자성물질의 거동 사이의 상관관계를 분석하였다. 또한, 비점오염물질의 유출에 미치는 입자성물질의 영향에 대하여 정량적인 분석을 실시하였다. 연구결과, 중소규모 강우에서도 초기유출현상이 관찰되었으며, 입자성물질이 영양염류 및 중금속의 유출과정에 큰 기여를 하고 있는 것으로 나타났다. 특히, BOD5와 TOC의 유기물항목, TN과 TP의 영양염류, Al, Cr, Cu, Fe, Hg 및 Zn의 중금속항목 등이 SS (total), VSS, SS (d < 20 μm) 및 SS (20 μm ? d < 80 μm)와 높은 상관성을 보여 입자성물질과 유사한 유출거동을 갖는 것으로 나타났다. 한편, CODcr, Cd, Mn 및 Pb는 입자성물질의 유출거동과 뚜렷한 상관성을 보이지 않았다. 비시가화지역에서 비점오염물질의 유출과정은 입자성물질의 거동과 상관성이 높을 뿐만 아니라 처리대상물질에 따라서도 상이한 특성을 갖는다는 점을 고려한 비점오염 저감시설의 도입이 이루어져야 할 것으로 판단된다. In general, nonpoint pollutant of a watershed is drained out in the form of storm water runoff during rainfall events. As the bulk of the nonpoint pollutant is in adsorbed form on particulate matters, in order to understand the behavior of nonpoint pollutant it is essential to grasp the characteristics of particulate matters in rainfall runoff. Though, previous studies for the relationship between the runoff characteristics of pollutants and the size distribution of particulate matters are very rare. In this study, a small non-urbanized area (basin area of 52.8 ha) with various landuse types including paddy, dry fields and forest was selected and investigated in detail for the runoff properties of each pollutant during several rainfall events. The correlation and effects between particulate matters and nonpoint pollutant were analyzed quantitatively. As a result, the significant first flush was observed on each event and it became clear that fine particulate matters (80 μm or less) has contributed in the runoff process of nutrients and heavy metals. Organic matters (BOD5, TOC), nutrients (TN, TP) and several heavy metals (Al, Cr, Cu, Fe, Hg and Zn) represented high correlations with SS (total), VSS, SS (d < 20 μm) and SS (20 μm ? d < 80 μm). On the other hand, CODcr, Cd, Mn and Pb did not show clear correlations with the behavior of particulate matters. Therefore, we have to examine the introduction of nonpoint pollution mitigation facilities considering the facts that nonpoint pollutant runoff process has high correlation with the behavior of particulate matters and is changeable based on the target pollutants.
개발도상국 맞춤형 정수처리를 위한 수중 이온물질 제거용 이온교환섬유 성능평가에 관한 연구
여인설 ( In-seol Yeo ),조은영 ( Eun-young Jo ),박재로 ( Jae-roh Park ),오현제 ( Hyun-je Oh ),이성재 ( Sung-jae Lee ),박찬규 ( Chan-gyu Park ) 한국수처리학회 2016 한국수처리학회지 Vol.24 No.2
In case of developing countries, the amount of available water resources is lacking compared to the population distribution. In addition, since they have relatively low economic level, environmental awareness and a lot of outdated facilities, it is important to introduce appropriate technology without a large cost to purify. In this study based on the preceding experiment it was performed to evaluate the performance of the ion exchange module for application of customized water treatment system in developing countries. All tests were conducted in a batch test that evaluates the adsorption properties, removal efficiency with different dosage, removal efficiency depending on time variation, interference effects and renewable experiment. Experimental results in terms of changing the dose of the ion exchange fiber tended to match generally the Langmuir adsorption isotherm that is based on monolayer adsorption. When the media dose was increased above 2 g/L, it is possible to remove the high concentration of contaminants. In addition, ionic contaminants from aqueous system has been removed generally in a short time and efficiently removed without interference effects. When using a NaCl solution, it was confirmed that regeneration is possible.