BIOPILE

This term refers to a bioremediation technique in which the contaminated soil is heaped into piles. Air, nutrients (nitrates, phosphates) and water are then fed into the pile, each through its own separate grid of pipes. The technique creates the kind of optimum aerobic conditions necessary for the development and activity of microbial flora that spark the biodegradation of pollutants.
Source: Courtesy of Ambiente, an Eni Group Company