閉鎖性水域における底層部への高濃度酸素水導入による水質改善効果に関する研究

概要

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In this study, a method of using high-dissolved-oxygen water to purify bottom sediment in a closed water body was confirmed to be effective. A high-rate, high-efficiency oxygen dissolver was developed and a method of producing high-dissolved-oxygen water was discussed. In addition, the prevention of phosphorus release from the bottom sediment using high-dissolved-oxygen water was also studied. A pilot-scale oxygen dissolver was developed and an on-site study was carried out at two dam reservoirs in Yamaguchi, Japan. As results, it was possible to spread the high-dissolved-oxygen water across the bottom layer without any diffusion in the upper direction. Furthermore, the presence of high-dissolved-oxygen water could prevent the release of phosphorus from the bottom sediment. This study revealed the effectiveness of high-dissolved-oxygen water for the improvement in the water quality of a closed water body.
社団法人　日本水環境学会の論文
2006-11-10