植生浄化法を用いた屋上ビオトープの水質管理手法についての実験的検討

概要

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In this study, water treatment experiment by the aquatic plant was carried out in order to simply maintain water quality of the biotope. This paper described on the following items. In the roof biotope experiment, contrast(No.1)and planting biotope were used. As the result, in the water temperature in the summertime, the planting biotope consisted of the contrast with the value of low about 5℃. And, it was possible to prevent the multiplication of minute algae. It was able to judge pH and DO of the underwater from the measured value. The nitrogen removal ratio by the aquatic plant was 90.7?99.7%, and the phosphorus removal rate was 91.0?95.7%. As a result of AGP test of the biotope water, it was proven that AGP of the planting biotope was lower than the contrast. These results show being one of the methods in which the aquatic plant can simply control the roof biotope.