MICROBIAL TREATMENT OF SOILS WITH MIXED CONTAMINATIONS FROM RADIOACTIVE RESIDUES AND HYDROCARBONS

摘要

The treatment of contaminated soils often is complicated due to the presence of different pollutants. A remediation process must take into consideration the requirements of each of these contaminants. From uranium mining activities a great number of sites remained contaminated with hydrocarbons and radioactive residues which have to be treated for environmental protection reasons. The concept of a treatment process for these kinds of mixed contaminations is introduced. First, the hydrocarbons are removed biologically with help of on- or off-site technologies. After the degradation, the soil, now only contaminated with radionuclides, can be disposed like other radioactive wastes. For the biological treatment process, conventional methods can be applied which, however, have to be modified to consider radiation protection.