Dredging of Polluted Sediment in the First Petroleum Harbor, Rotterdam,
VOLKER STEVIN BAGGERMAATSCHAPPIJ NEDERLAND BV ROTTERDAM
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Papers previously published by the Municipality of Rotterdam on the removal of polluted bottom sediments from the First Petroleum Harbor explain that after long consideration it was decided that polluted material would be buried in deep pits in the bottom of the same harbor. Actual dredging operations in the First Petroleum Harbor have to fulfill some very strict requirements. First, the sediment has to be dredged, transported, and dumped with situ density because of the available space for disposal. Second, turbidity has to be avoided both at the dredging and the disposal location. For this purpose the cutter dredge OTTER was adapted and equipped with a specially designed suction head instead of the traditional cutter. Moreover, a special installation handled the methane gases available in the bottom sediments. This avoided negative effects in the suction process and also prevented escaping gas at the disposal site from causing turbidity. Finally, process control equipment was installed to avoid unnecessary dilution of the dredged material.
- Solid Wastes and Pollution and Control
- Civil Engineering