Patent ID: 7454847
Filing Date: 2008-11-25
Classification: F26B

Abstract:
1. A method dewatering dredged sediment or sludge, comprising the steps of: filling a water pervious sediment or sludge enclosure with dredged sediment or sludge; placing a porous media spacer against at least one perimeter surface of said sediment or sludge enclosure; surrounding said porous media spacer and said sediment or sludge pervious enclosure with a water and air impermeable membrane; applying a vacuum to said porous media spacer to cause said impermeable membrane to compress said sediment or sludge and thereby remove water; and attaching at least one inflatable flotation device to said at least one water and air impermeable membrane surrounding said porous media and said sediment or sludge pervious enclosure.