To main content

Remediation, Urk harbor area

Many port areas requiring dredging works have been forced to put projects on hold due to the absence of an environmentally safe solution for the disposal or processing of contaminated sediments. While this is a global problem, the availability of central, large-scale repositories in the Netherlands has transformed disposal economics at the national level. Nevertheless, the high level of debris encountered during the dredging of ports and harbors remains a major challenge to all contractors. The hydraulic transport of sediments with a high debris content is impossible.

Boskalis, however, has developed a hybrid dredging system combining precision dredging of contaminated soils with a robust, integrated system to sieve out debris. After sieving, sediments can be hydraulically transported, in the conventional way, to a processing plant or settlement lagoons. Sand separation then takes place, prior to disposal to repositories such as Ketelmeer, one of the country’s largest 'Confined Disposal Facilities' (CDFs).

Related projects

Selected filters
_Group_4_-_DSC7015__DSC7024-3_images_header.jpg

Port development, Tanger Med 2

Tanger-Med is a cargo and passenger port located about 40 km east of Tangiers, Morocco, on the Straits of Gibraltar at the crossing of two major maritime routes only 15 km from the European mainland.

TSHD_Cornelis_Zanen_rainbowing_header.jpg

Port upgrade, Pointe Noire

The rehabilitation of the Port of Pointe-Noire focused on the renovation and upgrading of the main infrastructure of the port and its adaptation to developments in containerized traffic, offering a draught of -15 m. Furthermore, the work included the construction of a protective berm, an extension of the external breakwater, the rehabilitation and extension of quays, and dredging work.

DSC_0602_header.jpg

Land reclamation artificial island, Punta Pacifica

The shoreline of Panama has increasingly become densely populated and, as the economy has boomed over the past 10 years, there is strong demand for high-end products. The real-estate market has taken a revolutionary step with the completion of the the first artificial real-estate island in the Americas.

19DS9430_12-11-26_005_header.jpg

Construction LNG port, Swinoujscie

The protective breakwater for Swinoujscie External Port comprises a 3 km long breakwater and groyne for a new outer harbor construction to facilitate a LNG tanker berth and other related activities in the Baltic Sea. The construction of the breakwater took 2 ½ years and was completed in December 2012. Boskalis International B.V. was the leader of a consortium consisting of Boskalis International B.V., Hochtief, Aarsleff and Doraco.

Aeroview_D1207-944_header.jpg

Port expansion,
Maasvlakte 2

PUMA, the Project Organization for the Extension of the Maasvlakte, is a 50/50 joint venture between dredging and marine contractors Boskalis and Van Oord. The consortium has been contracted by the Rotterdam Port Authority to construct the first phase of the Maasvlakte 2 Project – the extension of the Port of Rotterdam – between 2008 and 2013. The new zone will encompass 2,000 hectares of new land, roughly the same size as the total surface area of Schiphol airport. Half of the area will become land for a future business park.

Gbaran_Ubie_filter_placement_header.jpg

Riverbed and slope protection, Gbaran Ubie

The Shell Petroleum Development Company of Nigeria Limited (SPDC) has constructed a gas processing facility in the Niger Delta on the outside bank of a bend of the River Nun at Gbaran Ubie, north of Yenagoa. To facilitate the importation of the processing modules, a Materials Offloading Quay was constructed, including a ro-ro ramp, a passenger jetty and a fire water station.