Field experiment on restoration technique for water quality using primary productivity of algae in Amagasaki Canal

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  • 尼崎運河に設置した小水路における藻類を用いた水質改善手法の現地実験
  • アマガサキ ウンガ ニ セッチ シタ ショウスイロ ニ オケル ソウルイ オ モチイタ スイシツ カイゼン シュホウ ノ ゲンチ ジッケン

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The Amagasaki Canal where is an enclosed waters have been polluted and occurred eutrophication and hypoxic condition chronically. According to restore water environment in the canal, design of new restoration plant and substantiative experiment are preceded by the Amagasaki Sea Blue Project. In this study, long-term field experiment of water quality improvement technique using algae was examined. Water of sea bottom drawn from the canal and flow into the experimental small channel. This study focused on reduction of nutrients concentration and aeration with the photosynthesis by algas which was luxurianced naturally. As a result, it is found that the technique was very effective in daytime and summer in particular and disposal of exuberant algae will be required for isolation from material circulation in the canal.

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