Liquid Extraction — An Element in the Clean-Up of Waste Sites

The extraction of waste liquids for the effective supporting of an encapsulation requires the knowledge of some marginal conditions. These conditions can be determined by means of specific observation wells and pumping tests performed in such wells, if necessary in consideration of the laws of multiphase flows in porous media. As a part of a R+D-Project supported by the UBA, Berlin (“New Methods for the Clean-Up of Waste Sites with Particular Reference to the Georgswerder Waste Site”, part 6/1440390F0) such observation wells were installed in the Georgswerder Waste Site and tested. The results obtained are the basis for the dimensioning of extraction systems, which are to be built as a prototype on the waste site in oder to test their practical applicability.