|
|
|
|
|
|
|
|
|
|
|
|
|
 |
 |
 |
 |
 |
 |
 |
|
|||||
Bioremediation of Soil and Groundwater
Bioremediation is a well established technique for the remediation of organic contamination in soils. It can be carried out with the soil remaining in place (in-situ) or with excavated soil (ex-situ).
The bioremediation of excavated and screened soil involves the construction of above ground treatment beds. These may be shallow (600mm) or deep (2m) depending on the contamination, available space and timescales. We may elect to carry out ex-situ bioremediation using shallow, rotovated beds, windrows or deep aerated beds. Deep beds are usually actively aerated using a vacuum system, which provides optimum conditions for the remediation of hydrocarbon contaminated soils, in addition to controlling VOC emissions.
Bioventing is the process of aerating soils to stimulate in-situ biological activity and promote bioremediation. It is often the most cost-effective and efficient technology available for vadose zone remediation of hydrocarbon contaminated sites. Bioventing is related to soil vapour extraction (SVE) except that the primary objective of bioventing is to maximize the biodegradation of aerobically degradable compounds.
 |
 |
 |
|||
