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이종태(Lee Jong-Tae),이상규(Lee Sang-Gyu),용상순(Yong Sang-Soon),이호상(Yi Ho-Sang),이승건(Lee Seung-Kun),송진환(Song Jin-Huan),곽신웅(Kwak Sin-Ung) 한국항공우주연구원 2011 항공우주산업기술동향 Vol.9 No.1
본고에서는, 지구관측 위성용 탑재체지료처리장치의 주요기술과 국내외 기술 개발동향과 국내 기술의 현주소를 살피고, 독자적인 기술개발의 필요성 및 개발방향을 점검한다. In this article, we introduce the technologies and trend of technical evolution of Payload Data Handling Unit (PDHU) for Earth Observation Satellites. As well, we review the efforts for the Koreanization of PDHU so far, and conclude with some suggestions for future work.
이태진(Tae Jin Lee),한기훈(Ki Hun Han),이호상(Ho Sang Yi),김장규(Jang Kyu Kim) 한국물환경학회 1999 한국물환경학회지 Vol.15 No.1
For the development of an electrochemical wastewater treatment system for municipal landfill leachate, the characteristics and performance of an electrocoagulation(EC) unit using iron electrode are studied. By proceeding an electrolytic oxidation of electrode, the organic pollutants are removed by the Fe^(n+) ion and iron hydroxide which come from electrolytic reaction through coagulation mechanisms. The electrocoagulation unit with Fe^(3+) ion shows higher organic removal efficiency than that with Fe^(2+) ion. The COD_(Cr), TOC, and SS removal efficiencies under the conditions of pH 5, 1,200 coulomb/L and 165㎎·H₂O₂/L are 45, 40, and 80%, respectively. From the results of the experiments, it is concluded that the landfill leachate can be treated by the EC process as a substitute of the conventional chemical coagulation process, and it is expected that the other wastewater would also be treated by the electrochemical method.