Feasibility of decontaminating dredged material

Burt, T.N. and Fletcher, C.A. (1999) Feasibility of decontaminating dredged material. Technical Report. HR Wallingford.

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Abstract

The sediment commonly found on the bed of lakes, rivers, estuaries and coastal zones is often contaminated through the activities of man. Where it is found in ports and navigation channels it may have to be removed to maintain access for shipping. Less frequently, but also importantly, there is a need to remove such sediment for environmental reasons, sometimes termed "clean-up", for example to improve amenity value of waterways no longer required for shipping. Whether the contaminated material arises from capital dredging, maintanenance dredging or clean-up dredging it is termed "contaminated dredged material" (CDM), for the purpose of this report. The CDM will require either treatment, to make it safe for beneficial use or disposal, or isolation (for example in a confined disposal facility). This report is only concerned with treatment. This report investigates the treatment technologies that are already available and assesses their applicability including costs. It also investigates new technologies and identifies those that have the potential for further development. It reviews and highlights research occurring around the world notably in the USA, Canada and the Netherlands while the Appendices describe pilot studies. A list of firms and their technologies offered have been included in this report.

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