Process for simplified biological rehabilitation of soil polluted by long-term contamination based on mineral oil

摘要

Invention Patent: B "PROCESS FOR SIMPLIFIED BIOLOGICAL REHABILITATION OF POLLUTED LAND BY LONG TERM CONTAMINATION BASED ON MINERAL OIL" D. The invention relates to a process for simplified biological rehabilitation of land areas of virtually any size that are polluted by mineral oil-based hydrocarbons (MHCs) and, in particular, by the corresponding long-term contamination through treatment with nutrient concentrates for the stimulation and promotion of growth for the accelerated cultivation of microorganisms consuming MHCs. The process according to the invention is particularly easy to conduct and is characterized by the fact that, (a) after preliminary wetting / irrigation where necessary, (b1) on the one hand, the soil to be rehabilitated is fragmented to a depth sufficient and revolved in at least one operation (b2) and on the other hand the nutrient concentrate is applied in the form of a dispersion and / or emulsion diluted in water, more particularly by spraying in a substantially uniform distribution, again in at least one operation and (c) the area thus treated is irrigated intensively. Steps (b1) and (b2) can be carried out one and / or more times, preferably in the following sequences: (b1) sym (b2); (b2) sym (b1); (b1) sym (b2) sym (b1) or (b2) sym (b1) sym (b2).