Neue Verfahren und Methoden zur Sanierung von Altlasten - am Beispiel der Deponie Georgswerder, Hamburg. T. 6: Entnahmesysteme fuer schadstoffbelastete Fluessigkeiten aus Deponien. Bd. 1 Kurzfassung

Methods for the removal of contaminated liquid matters from waste disposal sites have been developed and tested. The controlled removal of the liquids prevents the pollution of non-contaminated earth zones. Laboratory tests revealed that household refuse contains about 25% waste oil. The spatially concentrated oily liquids have to be removed prior to lowering of the seeping water level. For the acquisition of starting parameters, the layer of the oily phase, physical and chemical characteristics of the liquids and the hydraulic conditions in the disposal site have to be determined. The introduction of wells and drainage slits by the simple displacement method has been proved successfully in pilot plant tests. As wells are susceptible towards silt-fill, drainage slits are proposed as the safer method for liquid gathering. (WEN)SIGLEAvailable from TIB Hannover: QN 82(6,1)+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany); Umweltbehoerde, Hamburg (Germany). Amt fuer AltlastensanierungDEGerman