LANDFARMING

Landfarming is an ex-situ bioremediation technology in which the contaminated soil is excavated and positioned in 20-50 cm thick layers, on surfaces insulated with impermeable liners to control leaching of contaminants. The soil is periodically turned over or tilled to aerate the waste and optimise the rate of contaminant degradation. Soil conditions are often controlled; the soil is irrigated and aerated; sometimes other amendments are added.
Source: Courtesy of Ambiente, an Eni Group Company