Former Chairman of the Korea Student Alpine Federation; Professor of Dept. of Environmental Engineering University of Seoul(UOS), Korea; Ph.D.in Environmental Engineering of Hokkaido University in Japan. His main research directions include solid waste management, anaerobic digestion, organic waste management, etc. In addition, he has in-depth research and rich experience in mountain waste treatment. As of January 7, 2015, he has registered 11 patents and published 6 books.