IDEAS home Printed from https://ideas.repec.org/a/eee/ecomod/v237-238y2012ip101-108.html
   My bibliography  Save this article

Effect of wind on contaminant dispersion in a wetland flow dominated by free-surface effect

Author

Listed:
  • Zeng, L.
  • Wu, Y.H.
  • Ji, P.
  • Chen, B.
  • Zhao, Y.J.
  • Chen, G.Q.
  • Wu, Z.

Abstract

Flow and environmental dispersion are essential to ecological risk assessment and ecological restoration associated with wetlands. Presented in this paper is an analytical study for effect of wind on contaminant dispersion in a wetland flow dominated by free-surface effect. Based on the momentum transport equation generally adopted for wetland flow, the solution for velocity distribution in a free-surface wetland flow under wind is rigorously derived, with a limiting case covering the known solution of flow in the absence of wind. The thickness of inverse flow layer, maximum velocity, and its location are obtained. By use of Aris's method of concentration moments, the expression for environmental dispersivity in the free-surface wetland flow under wind is derived, and that in the absence of wind can be included as a special case. The direction and intensity of wind can influence greatly the environmental dispersivity at a stable stage. The time scale for environmental dispersivity to approach the stable stage is independent of wind. Analytical solution of mean concentration is derived and illustrated for a pulsed contaminant emission into a wetland flow dominated by free-surface effect under wind. For typical pollutant Pb, the length and duration of influence region with contaminant concentration beyond given standard level of water quality are illustrated.

Suggested Citation

  • Zeng, L. & Wu, Y.H. & Ji, P. & Chen, B. & Zhao, Y.J. & Chen, G.Q. & Wu, Z., 2012. "Effect of wind on contaminant dispersion in a wetland flow dominated by free-surface effect," Ecological Modelling, Elsevier, vol. 237, pages 101-108.
    • Handle: RePEc:eee:ecomod:v:237-238:y:2012:i::p:101-108
    DOI: 10.1016/j.ecolmodel.2012.04.020
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0304380012001937
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.ecolmodel.2012.04.020?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Zeng, L. & Chen, G.Q., 2011. "Ecological degradation and hydraulic dispersion of contaminant in wetland," Ecological Modelling, Elsevier, vol. 222(2), pages 293-300.
    2. Chen, G.Q. & Zeng, L. & Wu, Z., 2010. "An ecological risk assessment model for a pulsed contaminant emission into a wetland channel flow," Ecological Modelling, Elsevier, vol. 221(24), pages 2927-2937.
    3. Wu, Z. & Chen, G.Q. & Zeng, L., 2011. "Environmental dispersion in a two-zone wetland," Ecological Modelling, Elsevier, vol. 222(3), pages 456-474.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Mandal, Sudipto & Roy Goswami, Abhishek & Mukhopadhyay, Subhra Kumar & Ray, Santanu, 2015. "Simulation model of phosphorus dynamics of an eutrophic impoundment – East Calcutta Wetlands, a Ramsar site in India," Ecological Modelling, Elsevier, vol. 306(C), pages 226-239.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Yin, X.A. & Yang, Z.F., 2013. "A reservoir operating model for directing water supply to humans, wetlands, and cones of depression," Ecological Modelling, Elsevier, vol. 252(C), pages 114-120.
    2. Yang, Zhifeng & Mao, Xufeng, 2011. "Wetland system network analysis for environmental flow allocations in the Baiyangdian Basin, China," Ecological Modelling, Elsevier, vol. 222(20), pages 3785-3794.
    3. Baofeng Cai & Yang Zhang & Xianen Wang & Yu Li, 2018. "An Optimization Model for a Wetland Restoration Project under Uncertainty," IJERPH, MDPI, vol. 15(12), pages 1-12, December.
    4. Mandal, Sudipto & Roy Goswami, Abhishek & Mukhopadhyay, Subhra Kumar & Ray, Santanu, 2015. "Simulation model of phosphorus dynamics of an eutrophic impoundment – East Calcutta Wetlands, a Ramsar site in India," Ecological Modelling, Elsevier, vol. 306(C), pages 226-239.
    5. Maleewong, Montri & Hasadsri, Sion, 2013. "Analytical and numerical results of dissolved oxygen and biochemical oxygen demand in non-uniform open channel," Ecological Modelling, Elsevier, vol. 252(C), pages 11-22.
    6. Wu, X.F. & Chen, G.Q. & Wu, X.D. & Yang, Q. & Alsaedi, A. & Hayat, T. & Ahmad, B., 2015. "Renewability and sustainability of biogas system: Cosmic exergy based assessment for a case in China," Renewable and Sustainable Energy Reviews, Elsevier, vol. 51(C), pages 1509-1524.
    7. Chen, Shaoqing & Chen, Bin & Fath, Brian D., 2013. "Ecological risk assessment on the system scale: A review of state-of-the-art models and future perspectives," Ecological Modelling, Elsevier, vol. 250(C), pages 25-33.
    8. Wu, Z. & Chen, G.Q. & Zeng, L., 2011. "Environmental dispersion in a two-zone wetland," Ecological Modelling, Elsevier, vol. 222(3), pages 456-474.
    9. Tang, P.Z. & Liu, J.Z. & Lu, H.W. & Wang, Z. & He, L., 2017. "Information-based Network Environ Analysis for Ecological Risk Assessment of heavy metals in soils," Ecological Modelling, Elsevier, vol. 344(C), pages 17-28.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:ecomod:v:237-238:y:2012:i::p:101-108. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/ecological-modelling .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.