Bioremediation of oil contaminated soil from service stations. Evaluation of biological treatment

摘要

During 1993, the biotreatability of oil-contaminated soil from service stations was investigated in cooperation with the Finnish Petroleum Federation. The goal of this field-scale study was to test how fast lubrication oil can be composted during one Finnish summer season and to find out whether microbial inoculants would enhance the degradation rate. The soil was excavated from three different service stations in the Helsinki metropolitan area and was transported to a controlled composting area. The soil was sieved and compost piles, also called biopiles, were constructed on the site. Two different commercial bacterial inoculants were added to two of the piles. Several microbiological parameters were determined during the test period as well as the temperature and mineral oil content.