植物による水質浄化に関する予備的研究

概要

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When hydroponics of Egeria densa, Gladiolus gandavensis, Trifolium burchellianum, and Tagetes sp. was carried out with the water of the eutrophicated pond for agriculture "Kadoike", only G. gandavensis has been grown normally. Then, the ability of water quality purification of G. gandavensis was evaluated using the model solution of eutrophication. Ammonium, nitrate, and nitrite nitrogens as the main causative materials of eutrophication were removed, though the rates of the absorption were different. Especially nitrate nitrogen was easy to be used. On the other hand, G. gandavensis could not utilize the phosphorus as the phosphate in the solution. The level of chemical oxygen demand increased in the stagnating solution and the pH decreased slightly. As for the water quality purification system using a plant, further investigations are necessary to improve the ability of the removal of phosphorus.
沼津工業高等専門学校の論文
2010-01-31