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Sediment deposition in constructed wetland ponds with emergent vegetation: laboratory study and mathematical model
Schmid, B.H.; Stephan, U.; Hengl, M.A. (2005). Sediment deposition in constructed wetland ponds with emergent vegetation: laboratory study and mathematical model. Wat. Sci. Tech. 51(9): 307-314
In: Water Science and Technology. IWA Publishing: Oxford. ISSN 0273-1223; e-ISSN 1996-9732, meer
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    Laboratory tests
    Models > Mathematical models
    Physics > Mechanics > Hydraulics
    Transport > Sediment transport
    Water bodies > Inland waters > Wetlands
Auteurs  Top 
  • Schmid, B.H.
  • Stephan, U.
  • Hengl, M.A.
Abstract
    Retention of suspended particles by settling is among the main physical treatment processes in constructed wetland ponds. Laboratory experiments were conducted to study the transport and deposition of suspended particles in the slow, near-stagnant flows typical of constructed wetland ponds with emergent vegetation. The presence of stems was found to create a velocity field which is much more uniform than its counterpart without vegetation. This property was used to obtain an approximate mathematical model, for which an analytical solution could be given to describe sediment transport and deposition. The deposition rates predicted by this formula were compared to the data from the above-mentioned laboratory experiments and found to agree closely.
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