Summer School on Contaminated Sediments
Characterization and Remediation

Welcome

IHE Delft is organizing a summer school on contaminated sediments from 23 to 27 May 2016 in Delft, the Netherlands. The summer school focuses on the scientific and technological aspects of well-established or emerging sediment management strategies.

According to the US-Environmental Protection Agency, contaminated sediment is soil, sand, organic matter and/-or other minerals that tend to accumulate on the bottom of a water body and contain toxic and/-or hazardous materials at levels that could adversely affect human health and the environment. Contaminants adsorbed to soil or in other forms may wash-out from land, be deposited from air, erode from aquatic banks or beds, or form from the underwater breakdown or build-up of minerals. Contaminated sediment may be present in wetlands, streams, rivers, lakes, reservoirs, harbors, along ocean margins, or in other water bodies. In this context, “water body” generally includes all of these environments. Some contaminants have both anthropogenic (or man-made) sources and natural sources (e.g., many metals and some organic compounds).

From an EU-perspective, The European Sediment Research Network (SedNet), dealt with the science, policy and regulatory aspects of contaminated sediments. One report by SedNet clearly indicates that - ''It is not only the quantity of sediment which affects downstream areas but even more so the quality of the sediments; in particular, the presence of contaminants like heavy metals, nutrients pesticides and other organic micro-pollutants have biological impacts on waterways, wetlands and estuarine systems''.

The most commonly used in-situ capping refers to the placement of a sub-aqueous covering or cap of clean material over contaminated sediment that remains in place. Caps are generally constructed of clean sediment, sand, or gravel, but can also include geo-textiles, liners, or the addition of material, such as organic carbon, to attenuate the flux of contaminants into the overlying water. Recent pilot-scale field trials have shown that, the addition of sorbent amendments alters the sediments geochemistry and increases contaminant binding to sediment, thereby reducing contaminant exposure risks to humans and the environment (i.e., bioavailability).

The summer school on contaminated sediments (SED2016) focuses on the scientific and technological aspects of well-established or emerging sediment management strategies. The different contaminated sediment treatment technologies: thermal-based (incineration, pyrolysis), extraction-based (CF systems solvent extraction, Carver-Greenfield process, soil washing), chemical-based (chelation, dechlorination, oxidation Processes) and bioremediation (bioslurry processes, contained land treatment systems, composting processes) will be critically examined considering their potential advantages and limitations to suit practical scenarios.

The organizing and scientific committee members of SED2016 have worked to ensure that we present the participants with a varied program for professional scientific skill development, networking opportunities, and technical disussions. We hope this Summer School will also provide you with an opportunity to meet with your colleagues and friends.

We look forward to seeing you in Delft soon.

The Organizers (IHE Delft, The Netherlands)

Tejaswini Gowda 
Samayita Chakraborty 
Eldon Raj 
Piet N.L. Lens