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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water engineering : Effect of aquatic plants on water qualities in small closed waters
Effect of aquatic plants on water qualities in small closed waters
Author : KUNIHIKO HAMAGAMI (1), CHIHAYU MURAKAMI (2)
ABSTRACT
Water quality purification by use of an aquatic plant is proposed in a closed water body. In order to make use of the
method in a water body with floating aquatic plants, we have to transport the nutritive salt from the bottom to the surface
of the water. In this study, a field observation was conducted in order to consider the effects of the abundance of aquatic
plants on the water quality and water flow in a small water body, such as an agricultural pond. As the results, it is
reveals that the fluid exchange was performed by thermal convection between the area with and without an abundance
of vegetation at nighttime. Then, though the nutrients decreased due to the absorption and adsorption from the
vegetation during the flowering period in the summer, these nutrients increased in reversal due to the elution from the
bottom of water body after the vegetation decayed in the winter. From the above results, it can be concluded that aquatic
plants should be adequately controlled to exert its effect sufficiently on the eutrophied water body.
File Size : 1,826,550 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water engineering
Date Published : 28/08/2015
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