Handling of PFAS contaminated soil: tests with active geo-composites
Excavation pit for the test field
In collaboration with HUESKER, CDM Smith is currently testing whether the reuse of PFAS contaminated soil might be allowed for by the installation of a PFAS-effective non-woven fabric. The use of so-called active geo-composites e.g. for the intake of contaminants from leak waters is well established and commonly done. These geo-fabrics are applied for instance for the absorption of organic and inorganic matters.
Initial bench test are successful
It was investigated through percolating tests whether those composites are useful for the detention of PFAS in leak water. It was proven for nearly all single substances that the minor threshold value was undercut in the discharge. Due to those promising laboratory testing results further field experiments are planned.
Construction measures for a testing field were initiated with the first tests. The plan is to monitor the results of this test field for a year, and to record the poduced leak water quantities and qualities.
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