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RESEARCH PRODUCT

Stabilization and Solidification Technology Implementation in Latvia: First Studies

subject

description

Soil and groundwater are environmental compartments that are primarily affected by industrial development with increasing amount of industrial wastes and inadequate dumping of them. A special attention should be paid to heavy metal contamination at least 56 contaminated territories of National priority are known as contaminated with heavy metals in different amount and concentration in Latvia. The stabilization / solidification technology refers to binding of waste contaminants to a more chemically stable form and thus diminishing leaching of contamination. In order to choose the remediation method the pre-investigation in industrial case study area was done in stages: data analysis of previous research, sampling and testing for the future application of the S/S method. In order to select the most applicable binder material, series of experiments were done to determine leaching properties as well as compression and freezing-thawing tests in order to get information about geotechnical properties of bound soil with Portland cement additive. This was the first pilot research for implementing of this technology in Latvia as the final treatment step in cases of large amount of chemically hazardous wastes.