Vol.14 No.5 September, 2003

Paper

Characteristics of Dioxins Removal by Coagulation and Sedimentation Process
……Akihiro Toji and Tetsuya Kusuda　239　abst

Preventing Hazardous-Level Generation of Hydrogen Sulfide Gas in Landfill Sites: Possibilities and Administrative Criteria
……Yusaku Ono and Nobutoshi Tanaka　248　abst

Analysis of the Operation Data of a Methane Fermentation Facility that Treats Manure and Tofu Refuse
……Yukimasa Ogawa, Masanori Fujita and Yoshiteru Nakagawa　258　abst

Adsorption of Basic Ca Ions by the Soil Layer in Landfill Sites
……Yusaku Ono and Nobutoshi Tanaka　268　abst

Comprehensive Biological Assessment of Leachate from Waste Disposal Landfill Site by Medaka, Oryzias latipes
……Kae Osaki, Shosaku Kashiwada, Norihisa Tatarazako and Yoshiro Ono　278　abst

Simultaneous Treatment of Heavy Metals and Salts in Fly Ash by Scrubbing Using Chelating Agent Solution
……Tsutomu Imaoka, Michihiro Yamaga, Wataru Nishijima, Mitsumasa Okada and Yuzo Inoue　288　abst