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Suk-heon An,Osami Nishida,Hirotusgu Fujita,Wataru Harano,Masao Hiroi,Masaaki Sato,Masanori Tashiro,Hyung-soo Kim 한국자동차공학회 2001 한국자동차공학회 Symposium Vol.- No.-
This research makes a new attempt to use the activated seawater by electrolysis in the wet serubber for the large diesel engine as a sort of post, exhaust gas treatment. By means of eletrolysis using the seawater, the activated alkaline water made by a negative pole is used to neutralize sulfuric oxide (SOx). carbon dioxide (CO₂) and carbon monoxide (CO) ete., but on the other hand the activated acidic water made by a positive pole oxidizes nitrie monoxides (HO) of exhaust gas to nitrie dioxides (NO₂), thus the NO₂ become dissolved into the seawater. Moreover, the particulate matter of exhaust emissions is forced into direct, contact with seawater. The results found that the high alkaline water of pH 10 was effective in reduction of SOx. CO₂ and above all else, the acidic water of pH 3 converted NO into NO₂ when compared with the other pH. Besides, it was also adequate to reduce the, particulate matter. This experiment believes that the way to reduce emissions from the marine diesel engines is to make it. attractive from an operating perspective, as well as an environmental perspective.<br/> <br/>
자연친화적 하천사업 및 통합적 유역 관리를 위한 새로운 수환경 분류법 및 자료관리 프로그램의 개발
Masato Noguchi,Sang Hyeok Kang,Joon Hyun Kim,Wataru Nishida,Nobuhito Fujisaki 한국환경영향평가학회 1998 환경영향평가 Vol.7 No.2
Nature-friendly river project has became common practice in Japan. In order to make it available for the conservation and rehabilitation of desirable water environment, water criteria for water environmental assessment must be established. Especially, the criteria estimating the effects on ecosystem in and around river should be constructed. In this paper, classification method for water quality has been developed using biological indices and applied to observed data in Honmyo River, Nagasaki, Japan. Modified PI method (BI`) has been suggested and those of three most abundant species resulted effective estimate for an overall water quality with comparatively simple procedure. Extensive database management code was prepared for the comprehensive ecological monitoring of river basin, which includes various biota. That system enables easy access of all the ecological data for a dissemination of a sound and sustainable water environment. The result of this study could improve knowledge base, serve making consensus for citizens, and help river management plans. In Japan, citizen`s realization and action are the most critical factor for nature-friendly river restoration project.
Masato Noguchi,Kang, Sang Hyeok,Kim, Joon Hyun,Wataru Nishida,Nobuhito Fujisaki 江原大學校 附設 環境硏究所 1999 環境硏究 Vol.16 No.-
일본에서는 자연친화형 하천사업을 많이 시행하고 있다. 바람직한 수환경을 보전하고 복원하기 위해서는 하천내외의 생태계에 대한 수질기준을 정립하여야 한다. 본 논문에서는 생물학적 지표를 사용한 수질 분류 방법을 개발하여 나가사키현의 흔묘하천에 대하여 적용하였다. 이러한 수질 분류를 위하여, 수정된 오염물 지표 분류법을 제안하였다. 비교적 단순한 방법이지만, 가장 많은 종에 대한 3가지 지표만으로 수질을 효과적으로 평가할 수 있었다. 또한, 하천유역의 통합관리를 위하여 다양한 생태계 자료를 포함하는 종합적인 자료시스탬을 개발하였다. 본 시스템을 사용하여 건전한 수환경을 보전하기 위한 각종 생태계 자료를 쉽게 취득할 수 있다. 본 연구의 결과를 사용하여 수질자료를 개선하고, 시민들의 의식을 고양하며, 하천관리계획을 세울 수 있을 것이다. 일본에서는, 자연친화적 하천 복원사업에 있어서 시민들의 의식 및 행동이 가장 중요한 요소이다. Nature-friendly river project has became common practice in Japan. In order to make it available for the conservation and rehabilitation of desirable water environment, water criteria for water environmental assessment must be established. Especially, the criteria estimating the effects on ecosystem in and around river should be constructed. In this paper, classification method for water quality has been developed using biological indices and applied to observed data in Honmyo River, Nagasaki, Japan. Modified PI method (BI') has been suggested and those of three most abundant species resulted effective estimate for an overall water quality with comparatively simple procedure. Extensive database management code was prepared for the comprehensive ecological monitoring of river basin, which includes various biota. That system enables easy access of all the ecological data for a dissemination of a sound and sustainable water environment. The result of this study could improver knowledge base, serve making consensus for citizens, and help river management plans. In Japan, citizen's realization and action are the most critical factor for nature-friendly river restoration project.