富栄養化湖水の浄化のための水耕生物濾過法を用いた人工湿地の開発

概要

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Hydroponic biofilter method which is a kind of technique for constructed wetlands was applied to purification of hyper-eutrophic Lake Kasumigaura water during July to September in 1994. Several kind of plants, such as Chinese Puk-Bung, Water Cress, Water Funnel and Spearmint, were cultured using artificial channels, and removal rates of particulate and dissolved nutrients from lake water were surveyed.Average removal rates (g·m-2·d-1) of organic carbon, total nitrogen and total phosphorus during the summer period were as following; Chinese Puk Bung, 13.1, 3.05 and 0.095 ; Water Cress, 12.7, 1.80 and 0.029 ; Water Funnel, 8.4, 0.66 and -0.013 ; Spearmint, 14.7, 1.75, and 0.045 ; Control (filamentous green algae), 10.3, 1.65 and 0.021, respectively. Chinese Puk Bung showed high removal rates.
社団法人　日本水環境学会の論文
1997-09-10