Development of techniq ue for decontamination of soil fromspilled oil in substations

The presence of organic hydrocarbon contaminants in soil continues to be a cause of concern. The contamination is usually due to oil spillage or leakage from transformers. Although every effort is made to minimise spillage, during handling of insulating oil, but accidents can happen resulting in land and water contamination. The clean up of insulating oil spill or oil contaminated with PCBs is costly to electricity industry and labour intensive. In the other hand there is requirement and legislation to clean contaminated sites from spilled hydrocarbons specially those with high water table. Several decontamination techniques available fulfil this commitment. Chemical treatment offers some advantages over the existing methods. This paper reviews different available techniques for soil clean up. It is also reporting a newly developed chemical technique for decontamination of soil from hydrocarbon and PCBs. It is fast, environmental friendly, economy and can be used on site.

کلیدواژه ها:

Decontamination of soil ، spilled oil ، techniques