Contaminated Sediment Excavator

"Seaway Excavator Provides the Means to Eliminate the Presence of Free-Water in the Sediment During the Dredging Process with Reduced Particulate Dispersion"

When traditional dredging technology is employed during sediment cleanup operations large quantities of "free-water" (water that is not adsorbed or bound to the sediment-soil) are present with the sediments that are removed. Depending on the type of removal process the sediment can take the form of a loose mud (mechanical dredge removal) or a watery slurry (hydraulic dredge removal).

As a result, the dredged sediments must be processed to reduce the water so that the sediment materials can be handled and transported to its final disposal site.

Seaway's "Contaminated Sediment Excavator (CSE)" offers a new approach to sediment removal that provides the means to remove sediments without the presence of "free-water". This is accomplished excavating sediments in a pressure- controlled housing that provides a "dry" environment around the mechanical bucket that is removing the sediment. By maintaining a dry environment around the bucket sediments are prevented from mixing with the water column as they are removed from the bottom of the waterway.

.By preventing contact of the sediments with the water column, sediments are removed with a lower moisture and "free-water" content and the re-suspension and migration of particles from the dredge work area is reduced.

Copyright© 2000 Seaway Environmental Technologies, Inc.