IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Hydro-environment : Experimental study on phosphorus distribution between overlying water and bed-sediment with differen...
Experimental study on phosphorus distribution between overlying water and bed-sediment with different hydrodynamic conditions
Author : HAOKE CHENG(1), YANG XIAO(1)(2), HONGWU TANG(1)(2), WEIWEI YU(1
ABSTRACT
The distribution and movement of soluble reactive phosphorus (SRP) between overlying water and bed-sediment in river systems is strongly influenced by hydrodynamic conditions. This research reports on an investigation into the effects of velocity on phosphorus distribution between overlying water and bed-sediment. The experiments were conducted in an annular flume for 4 days. The sediment was placed in the bottom of the channel, the range of water velocity was controlled below the sediment incipient velocity (i.e., <11 cm/s) to keep the suspended sediment concentration low. The experimental results demonstrated that the transport of phosphorus to bed-sediment in fluvial systems was far from a steady-state equilibrium at the end of experiments. In the first 24 h, the content of P uptake by bed-sediment increased with increasing water velocity in the first 24h, and in the following 3d, water velocity appeared to have no significant effect on P uptake by bed-sediment
File Size : 245,576 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Hydro-environment
Date Published : 28/08/2015
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