By Danny Reible, Tomáš Lánczos (auth.), Danny Reible, Tomas Lanczos (eds.)
Contaminated sediments pose one of the most tough web site remediation concerns. infected sediments ordinarily dwell in spatially variable and dynamic structures topic to seasonal move adaptations and episodic typhoon occasions. the amount of sediments that needs to be controlled at specific websites frequently exceeds a million cubic meters, dwarfing many infected soil websites. those sediments also are linked to both daunting volumes of water and efforts to take away the illness often entrains much more water. The environmental protection of either NATO and associate nations is in danger end result of the pervasive nature of sediment illness of rivers, lakes and harbors. A NATO complicated learn Workshop used to be convened in Bratislava in could 2005 to debate present ways to handling infected sediments and to spot study essential to conquer striking difficulties.
In this article, drawn from shows and dialogue of that workshop, present ways to the review and remediation of infected sediments might be mentioned with the emphasis on in-situ administration. actual, chemical and organic techniques for the review and remediation of sediments are all addressed. constructing regulatory and strategic methods are highlighted with a different emphasis at the capability for organic remediation for the administration of infected sediments.
Read Online or Download Assessment and Remediation of Contaminated Sediments: Proceedings of the NATO Advanced Research Workshop on Assessment and Remediation of Contaminated Sediments Bratislava, Slovak Republic 18–21 May 2005 PDF
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Additional resources for Assessment and Remediation of Contaminated Sediments: Proceedings of the NATO Advanced Research Workshop on Assessment and Remediation of Contaminated Sediments Bratislava, Slovak Republic 18–21 May 2005
This approach should respect the national and EU policy targets and comply with legislation. Other recommendations towards sustainable sediment management are: Find solutions in increase of the interaction with stakeholders. The perception of sediment depends on a variety of roles, values and definitions and is influenced by stakeholder interests. In order to maintain a dialogue, definitions and terms used to describe sediment must be neutral and allembracing, and sympathetic to stakeholder values and views.
Besides complicating dredging activities per se, contaminated sediment may pose ecological risks or risks to water quality. The relation between sediment quality and risks is complex and site specific, requiring assessment methods based on bioavailable contaminant fractions and bioassays rather than results based on the traditional total contaminant concentrations. However, if sediment quality impairs the chemical or ecological status, remediation measures may be needed. So far, only in a few Member States has contaminated sediment been managed due to its impact on the ecological quality of water bodies.
For the same reasons, sediments are, more often than soils, contaminated with multiple chemicals (Long et al. 1995), making risk assessment and management decision-making difficult and complex. The hydrodynamics and geochemistry of aquatic ecosystems are also quite different from those of terrestrial ecosystems. While soils and groundwater can often be isolated from receptors during remediation, similar isolation or removal approaches for contaminated sediments are more difficult to implement successfully; sensitive aquatic biota are more likely, and at times unavoidably, directly affected during the implementation of the remedy (USEPA 2002).
Assessment and Remediation of Contaminated Sediments: Proceedings of the NATO Advanced Research Workshop on Assessment and Remediation of Contaminated Sediments Bratislava, Slovak Republic 18–21 May 2005 by Danny Reible, Tomáš Lánczos (auth.), Danny Reible, Tomas Lanczos (eds.)