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KMID : 0380120000230020163
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Korean Journal of Ecology
2000 Volume.23 No. 2 p.163 ~ p.167
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Comparisons of Nitrogen and Phosphorus Removal Capacity of Four Macrophytes
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Lee, Jeom Sook
Ihm, Byung Sun/Kim, Jong Wook/Lee, Seung Ho
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Abstract
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To evaluate the water purification capacity of 4 emergent macrophytes in 4 tributaries of Mankyung River, nitrate reductase activity (NRA) and nutrient removal capacity were determined. Higher NRA occurred in emergent macrophytes such as Persicaria thunbergii and Oenanthe javanca with 7.8 and 5.4 μ㏖ NO_2g^-1d.wt.h^-1, respectively. The nitrogen removal capacity of emergent macrophytes displaying higher NRA fell within the range of 0.85 to 1.95 ㎎^-1d.wt. day^-1 and was higher in the order Phragmites communis ＞ Persicaria thunbergii ＞ Oenanthe javanica ＞ Zizania latifolia. The phosphorus removal capacity was within the range of 0.07 to 0.12 ㎎ g^-1d.wt. day^-1 and was higher in the order Phragmites communis ＞ Oenanthe javanica ＞ Persicaria thunbergii ＞ Zizania latifolia. In all the domestic, industrial and agricultural wastewaters, Phragmites communis showed the highest nitrogen and phosphorus removal capacity: 1.36 and 0.0088 ㎎ g^-1d.wt. day^-1, respectively. Among the 4 macrophytes, Phragmites communis was the most suitable species for water purification in 4 tributaries of Mankyung River.
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