An Innovative Way of Utilizing Wave Energy to Counteract Eutrophication and Hypoxia

Lucia Margheritini, Lennart Claeson

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Abstrakt

One of the most urgent environmental issues in 415 coastal systems worldwide is eutrophication and hypoxia. Cause of eutrophication is the rapid increase in intensive agricultural practices, industrial activities, and population growth which together have increased nitrogen and phosphorus flows in the environment. This is a major problem in the Baltic Sea. The present study introduces the Wave-Energized Baltic Aeration Pump (WEBAP). This is one floating overtopping device that uses the collected overtopping water to oxygenate the sea bottom in areas suffering from eutrophication. This is done by using the driving head of the overtopping water temporarily stored in the reservoir flowing out through a long vertical pipe leading close to the bottom of the sea. The necessary amounts of oxygen and corresponding overtopping volumes in order to have a positive impact in a damaged environment have been considered for the Baltic Sea case and laboratory tests in scale 1:25 to the North Sea have been conducted in the 3D deep wave basin at the Hydraulics and Coastal Engineering Laboratories of Aalborg University. The "prove the concept" and investigation of motions forces are here presented with focus on extreme wave conditions providing relevant insight on technical aspects.
OriginalsprogEngelsk
Titel9th ewtec 2011 : Proceedings of the 9th European Wave and Tidal Conference, Southampton, UK, 5th-9th September 2011
RedaktørerAbuBakr S. Bahaj
Antal sider9
ForlagUniversity of Southampton
Publikationsdato2011
StatusUdgivet - 2011
BegivenhedThe 9th European Wave and Tidal Energy Conference : EWTEC 2011 - Southampton, Storbritannien
Varighed: 5 sep. 20119 sep. 2011

Konference

KonferenceThe 9th European Wave and Tidal Energy Conference : EWTEC 2011
LandStorbritannien
BySouthampton
Periode05/09/201109/09/2011

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Bibliografisk note

Published on a cd.

Emneord

  • Overtopping
  • Oxygenation
  • Eutrophication
  • Morring Forces
  • Multipurpose Platforms
  • Motion Transfer Function

Citationsformater

Margheritini, L., & Claeson, L. (2011). An Innovative Way of Utilizing Wave Energy to Counteract Eutrophication and Hypoxia. I A. S. Bahaj (red.), 9th ewtec 2011: Proceedings of the 9th European Wave and Tidal Conference, Southampton, UK, 5th-9th September 2011 University of Southampton.