Process for separation of volatile pollutants from contaminated materials, soil, wood, muds and sediments. Entwicklung eines Verfahrens zur Separation fluechtiger Schadstoffe aus belasteten Baustoffen, Boeden, Holz, Schlaemmen und Sedimenten

Many processes are available for treatment of contaminated waste and remediation of abandoned polluted areas. One of the main problem is remediation of contaminated silt or clay fractions. Particularly the cleaning of sediments or soils contaminated by mercurcy, PAH's or MKW is not solved satisfactorily regarding the economical aspect. In 1996 GKSS and Umwelt-Technics-Nord (UTN) have signed a co-operation contract. Aim of the co-operation is development of a new decontamination-technology based on desorption processes with high efficiency. The new technology combines operational concepts of GKSS and UTN. The combined technology allows cleaning of all kind of contaminated materials, like sludge, drilling mud, contaminated muds, remainders from soil washing plants, sediments, or even wood. A pilot plant was set up at GKSS research centre for the cleaning of mercury-contaminated soil, sediments and sludge with particle sizes less then 63 mm. A tube reactor is the essential element of this plant as well as for GKSS-tube-reactor-process (GTR-Process, patent pending). Umwelt-Technics-Nord GmbH is owner of the patent 'Method and Apparatus for separation of Volatile Components from a Base Material' as well of the registered design 'Apparatus for Separation of Volatile Components from a Base Material'. The UTN-technology is a batch-process. Pollutants are concentrated to a very high degree by this process. (orig.)SIGLEAvailable from TIB Hannover: RA 3251(98/E/27) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman