Cornelsen Umwelttechnologie GmbH
Mr. Buhl has been involved in soil and groundwater investigation and remediation for nearly 30 years. He has a a degree in Geology and Paleaeontology from the Johannes Gutenberg Unversity in Mainz Germany. Most recently his efforts have been concentrated on development and implementation of new technologies for PFAS removal.
Technical Solution for Removal of PFAS in Water
Close to an airport in Nuremberg (Germany), investigations showed that PFAS (per- and polyfluorinated alkyl substances) were detectable in the groundwater down gradient of the airport site. Further investigation identified a fire-fighting training area as the source area of PFAS contamination in both the soil and groundwater. The maximum level of PFAS in the groundwater measured about 777 µg/l (about 48% PFOS) with an average value in the wells of about 357 µg/l. A series of field tests on various remediation technologies were conducted and the selected remedial method captured the PFAS and generated micro floccs. The pre-treatment generating micro floccs was successful in removing more than 90% of the PFAS and required no carbon change-out, without the pre-treatment, eight carbon change-outs would have been required. Both field test and full-scale results will be presented.