The tests on stabilization of the contaminated sediments for sustainable management in the Baltic Sea Region
Journal Title: Biuletyn Instytutu Morskiego - Year 2016, Vol 31, Issue 1
Abstract
Sediments in ports usually contain very high concentrations of tributyltin (TBT), heavy metals, polycyclic aromatic hydrocarbons (PAHs) and other contaminants. The stabilization/solidification technology would reduce the environmental impact and it may also prove to be cost-effective and sustainable. The Port of Gdynia in Poland serves as a case study to present some of the aspects of the dredged sediments stabilization. By using an echo sounder and digital side sonar the hydrographical measurements were made. On the basis of the analysis of seismic-acoustic records were set the sediment sampling points. 58 sediment samples were collected by using vibro corer and laboratorial analysis was performed on concentrations of trace metals, polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), chloro-organic pesticides, tributyltin (TBT) and mineral oil index in accordance with accredited methods. Determined concentrations of analysed parameters indicated heavy pollution in basin VI (close to Hungarian quay) in the Port of Gdynia. The determined content of TBT ranged from 0.89 to 4.40 mg Sn kg-1 d.w, 7PAHs 0.677-9.0 mg kg-1, S16PAHs 2.604-14.66 mg kg-1 and 7PCBs 0.479-3.693 mg kg-1. The stated concentration of Pb (299 mg kg-1) exceeded the limit value set by Polish law. The content of mineral oil index ranged from 251 to 2904 mg.kg-1. Leaching tests were performed for both the stabilized and unstabilized samples. The results of primary laboratory stabilization tests, the leaching tests and uniaxial compressive strength confirmed that the stabilization/solidification technology can be applied to managing of contaminated dredging sediment. The material obtained as a result of the stabilization process can be used for the construction of quays, roads or car parks.
Authors and Affiliations
Grażyna Pazikowska-Sapota, Katarzyna Galer-Tatarowicz, Łukasz Zegarowski, M. Littwin, G. Holm, K. Kreft-Burman
Keywords
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- EP ID EP78760
- DOI 10.5604/12307424.1196265
- Views 108
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