Water Supply Vol 2 No 1 pp 109–112 © IWA Publishing 2002
Funnel and radiation: a new technique for groundwater remediation
D. Maier*, M. Maier** and M. Sörensen***
*Stadtwerke Karlsruhe GmbH, Daxlander Strafle 72, 76307 Karlsruhe, Germany
**Stadtwerke Karlsruhe GmbH, Daxlander Strafle 72, 76307 Karlsruhe, Germany
***a.c.k. aqua concept, Wikingerstrafle 9a, 76189 Karlsruhe, Germany
ABSTRACT
For the remediation of the groundwater of the former gas plant site of the city of Karlsruhe, which is contaminated with Polycyclic Aromatic Hydrocarbons (PAHs), a funnel-and-gate system was designed. In addition to the primary contamination with PAHs from the site itself a secondary contamination with vinylchloride (VC) is present in the aquifer as a result of a plume of degraded volatile organic compounds (VOCs) transported into the contaminated area from outside. For the removal of the contaminants an advanced novel technique consisting of an in-situ-UV-radiation in combination with adsorption on activated carbon was used. In this paper the first results of the experiments of the application of pilot scale equipment for the in-situ-UV-radiation for the oxidation of PAHs and VC are presented.
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