Preliminary Study of Water Pollution Due to Re-Suspension of Bed Materials Adsorbing Pollutants
Publication: World Environmental and Water Resource Congress 2006: Examining the Confluence of Environmental and Water Concerns
Abstract
This paper studies the water pollution process due to the re-suspension of the bed materials adsorbing pollutants in alluvial rivers. In this paper, by considering the periodical migrations of the bed form as a disturbance on the bed sediment, an equation that describes the transport of the pollutants adsorbed on the bed materials in the active layer is obtained. It gives the dynamic characteristics of the temporal and spatial variation of the pollutants absorbed in sediment particles of the bed materials. The equation quantitatively reflects the factors affecting the pollution process in terms of the flow intensity, the periodical migration of bed forms, and the process of river degradation or aggregation. The water pollution attributed to the scour of the bed materials adsorbing pollutants is numerically investigated by the transport equation obtained in this paper coupled with the sediment transport equation. Simulation without considering the impact of the dynamics of the active layer of alluvial rivers is also presented in this paper. Comparison indicates that the periodical movement of the bed forms plays an essentially important role on the pollution.
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Copyright
© 2006 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Alluvial channels
- Bed forms
- Bed materials
- Channels (waterway)
- Environmental engineering
- Hydraulic engineering
- Hydraulic structures
- Materials engineering
- Materials processing
- Pollutants
- Pollution
- River and stream beds
- River engineering
- Rivers and streams
- Sediment
- Sediment transport
- Water and water resources
- Water pollution
- Waterways
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