LADS - Lightweight Aggregate from Dredged Sediment

Category:

Beneficial Use of Contaminated Sediments

Description:

The Lightweight Aggregate from Dredged Sediment (LADS) technology is designed to provide a

cost-effective and environmentally sound solution to dredging inorganic and organic

contaminated sediment. The LADS system converts contaminated silt and clay dredged sediment

into lightweight aggregate. Contaminants are either converted into their elemental components,

caught in stack filters, or encapsulated in the aggregate.

Preliminary testing of the LADS system in the United States and a demonstration project in the

former Soviet Union have been completed. Lightweight aggregate manufactured from

contaminated sediment will meet the Standard Specification for Lightweight Aggregate for

Structural Concrete ASTM C330, set by the American Concrete Institute (ACI). All process

operations are performed on a barge, which may be attached to either a mechanical or hydraulic

dredge. No upland disposal or treatment sites are needed for the remediation or disposal of

contaminated sediment. The lightweight aggregate manufactured from the contaminated

sediment can be sold as construction material.

Reviewer:

J. Lally

Company / Organization(s):

Information Sources:

Literature:

Title:

"LADS System, Inc, Thermal Remediation Treatment for Contaminated

Sediment"

Author:

Vladimir Shepsis, Nancy Case, Greg Hartman

Month:

Year:

1994

LitType:

Report/Proceedings

Publisher:

Dredging 94

Publication

ASCE, New York, New York

Address:

Page:

Chapter 5 Other Technologies Reviewed