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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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one publication added to basket [202428]

Particle flocculation and distribution in estuarine environment Chen, M.S. (2009). Particle flocculation and distribution in estuarine environment, in: 33 rd IAHR Congress Water Engineering for a Sustainable Environment, 9-14 August 2009, Vancouver, British Columbia, Canada [CD-ROM]. pp. 5030-5037 In: (2009). 33 rd IAHR Congress Water Engineering for a Sustainable Environment, 9-14 August 2009, Vancouver, British Columbia, Canada. IAHR = AIRH: [s.l.]. ISBN 978-90-78046-08-0. 1 cd-rom pp., meer

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Beschikbaar in	Auteur
Waterbouwkundig Laboratorium: Non-open access 218296 [ aanvragen ] VLIZ [ aanvragen ]
Documenttype: Congresbijdrage

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Trefwoorden

Dimensions > Size > Particle size Estuarine environment Particle distribution Separation > Chemical precipitation > Flocculation Settling

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Auteur		Top
Chen, M.S., meer

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Abstract

In-situ particle size is one of the key determinants for sediment transport in estuaries. Direct field observations in the Scheldt estuary show that suspended particles are intensively flocculated. Laboratory simulation experiments were performed in an attempt to reproduce the observed natural phenomenon in terms of the variability of floc formation with respect to the suspended particle locality from areas varying in salinity. Observations from the simulation experiments reveal that in a low turbulent flow field flocculation takes place on 3-hour time scales. Some intrinsic particle properties such as primary grain compositions, specific surface area (SSA), cation exchange capacity (CEC) and organic mater content (OM) as well as biological factors indispensably determine the ultimate size and settling behaviour of floc. Increment in floc size is not necessarily accompanied by an enhanced floc settling behaviour. Floc shape is a significant parameter determining floc settling. The results give an important appreciation for field monitoring and support for numerical modelling of the sediment transport.

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