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Treatment of silt

Due to an continuous decrease in land-fill storage capacity for dredged material as well as increasingly tighter legislation, Ghent Dredging gets more and more involved in finding solutions in dewatering and treatment of those materials.

 
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One of the methods used is storing rows of silt in open air to allow it to dry.  To speed up the process of dewatering the material is handled several times in such a way, that all of the silt will be exposed to open air, resulting in rows of dried out firm soil.

 
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Another way is the use of geotextile containers.  Waterlogged silt is being injected with polymers, which separate water and silt.  The geotextile container allows the water to seep away through its meshes.  After a periode of time silt turns into firm dried soil.  All that's left to be done is to empty the container.

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In both cases the remaining soil is tested and classified in accordance with various grades of pollution, either to be delivered at certified recycling plants or ready for re-use.

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Within the port of Ghent, Ghent Dredging possesses a soil-treatment centre.  This centre comprises 5 lagoons, totalling 35.000m² of treatment-surface and capable of receiving and handling some 100.000m³ of soil per annum.

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