Abstract
In this study, a new non excavation purification method for machine oil polluted ground was examined. The method is pushing machine oil away by the vegetable oil within the flow of horizontal continuous oil phase. The laboratory experiments with soil tanks were conducted and expected oil flow was formed. Machine oil was flowed out to the recovery well. But the thin machine oil layer was formed below the injected vegetable oil. This thin machine oil layer will be difficult to remove iu-situ. From the results of additional experiment using the biodegradable surfactant together with the vegetable oil, machine oil layer was emulsified and flowed out to the well efficiently.
