Cement Association of Canada

Solidification/stabilization (S/S) treatment is used to treat hazardous wastes for disposal, and in the remediation/site restoration of contaminated land. S/S is a popular technology in brownfield (industrial property) redevelopment since treated wastes can often be left on-site to actually improve the site’s soil for subsequent construction.

In the United States, the Environmental Protection Agency (EPA) considers S/S to be an established treatment technology. EPA has identified S/S treatment as Best Demonstrated Available Treatment Technology (BDAT) for over 50 commonly produced industrial wastes and has selected S/S treatment for 25% of its Superfund (abandoned or uncontrolled) site remediation projects where the sources of contamination have been addressed.

S/S treatment involves mixing portland cement as a binding reagent, into the contaminated media or waste. Portland cement can be used alone or in combination with other materials including cement kiln dust, lime, lime kiln dust and fly ash to achieve the desired treatment results Successful treatment is accomplished through physical changes to the waste form, and often, chemical changes to the hazardous constituents themselves.

Cement-based S/S is a flexible treatment technology capable of treating a wide variety of contaminants while the contaminated media remains in place (in-situ) or on previously excavated material.

Cement Association of Canada
1500-60 Queen Street
Ottawa, Ontario K1P 5Y7
Telephone: 416-449-3708
Email: smoore@cement.ca