Feasibility of Capping Industrial Waste Disposal Sites with Dredged Material

Category:

Capping Polluted Sediment

Description:

An environmentally sound and economically efficient method for capping a typical solid waste

(bauxite residue) disposal site using coastal dredged material has been investigated. Laboratory

studies involving sand capping, geotextile materials, and no capping of bauxite disposal sites

were performed at Texas A&M University in 1992.

Issues resolved in the research included:

1. Wheteher caustic liquid would travel upward through the dredged material cap or whether

saline water would travel downward into the bauxite residue.

2. The effect of time on the chemistry of the two layers.

3. The rate of migration of soluble salts (if any).

4. Effect of dredged material depth, sand layer, and geotextile placement on plant growth and soil

chemical properties.

5. Sufficient depth for adequate rooting system.

Only laboratory studies had been performed as of 1994.

Reviewer:

C. Woolley

Company / Organization(s):

Projects Completed:

Texas A&M Capping and Industrial Waste Disposal Sites

Completion Date:

1993

Comments:

This paper reveals the advantages of doing lab evaluations before

applying the cap.

Information Sources:

Literature:

Month:

May

Year:

1994

LitType:

Report/Proceedings

Publisher:

WEDA XV

Page:

236

Chapter 5 Other Technologies Reviewed