method for improving the microbial purification of hydrocarbons, in particular with mineral oil contaminated soil by microbial oxidation.

摘要

Process for improving the microbial cleansing of soils contaminated with hydrocarbons and, in particular, mineral oils by microbial oxidation, where there is a metered addition to the contaminated soils directly or to the removed contaminated soil layers of, in addition to the oxygen required for decomposition and supplied by aeration, soluble feedstuffs, water and soluble or dispersed bio-surfactants alone or as a mixture with chemical surfactants in one or more charges at time intervals and in such a quantity that the formation of toxic intermediate which slow or block the microbial decomposition is prevented and, at the same time, the accessibility to mineral oils and their products for the microorganisms is increased and, thereby, an accelerated, practically total mineralisation through respiration to give CO2 and H2O is effected.