| abstract |
In a method for a biological recultivation treatment, soil which is contaminated with xenobiotics is removed from the contaminated site and placed into a treatment plant in which the soil to be treated is separated from the subsoil, soaked with liquid and inoculated with microorganisms which have been selected for the treatment, and suitable temperature conditions and sufficient aeration are provided. The treatment can be carried out on an immobile base sheet onto which the soil is applied in the form of a layer or clamps. The purpose of the base sheet is to separate the soil from the subsoil and to accommodate liquid discharged from the soil and, if appropriate, for feeding hot air to the soil. The soil may periodically be worked and mixed intimately on this base sheet. Another plant can be designed as a treatment tunnel where the soil to be treated is arranged in layers on carriages or sheets. Finally, the recultivation treatment can also be carried out in a rotating drum through which the soil, in the form of a loose bulk, is conveyed by the rotation of the drum, which is preferably carried out periodically. The bulk is supplied and treated with hot air, water, liquid nutrient medium and microorganisms. |