Field monitoring of ripening of dredged material at three sites in the Netherlands (preliminary results)
| Autor: | H. Folkerts, W. de Haan, K. J. Otten, M. Elsman, J. J. M. Heynen |
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| Rok vydání: | 1998 |
| Předmět: | |
| Zdroj: | Water Science and Technology. 37:371-378 |
| ISSN: | 1996-9732 0273-1223 |
| DOI: | 10.2166/wst.1998.0774 |
| Popis: | Ripening of dredged material in a deposit is a natural ‘drying’ process by which raw dredged material transforms into soil. The aim of ripening is to obtain soil which complies with environmental legislations and geotechnical specifications for application in earthworks (e.g. dikes, noise reduction banks, landfill covers). The paper deals with the background and contents of a monitoring programme on the ripening behaviour of clayey, peaty, and sandy dredged material, and changes in chemical composition, especially of organic compouds, and leaching characteristics during ripening. The main objectives of the monitoring programme are (1) to develop a management system for the ripening process, (2) to quantify the input and output volumes of dredged material, and (3) to develop guidelines for the design of (transit) deposits. The results of the monitoring programme will also be used for calibration and validation of a computer model on ripening. Prelimanary results on ripening of clayey material and biodegration of PAH and mineral oil are presented. On the basis of these results it is expected that large volumes of slightly to moderately contaminated dredged material are suitable for beneficial use after ripening. |
| Databáze: | OpenAIRE |
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