Herentals - full scale BTEX and MTBE groundwater remediation
A residual soil and groundwater contamination is present at (former) petrol station in Herentals. At the site soil and the smearing zone were remediated in the past by excavation.
However, significant residual product is still present down gradient of the excavated area especially in the smearing zone. In addition a 300m long BTEX and MTBE plume is migrating further off site.
The source is being treated by SVE combined with high yield groundwater extraction for lowering the groundwater table. The plume is being treated by a combination of biosparging and P&T. A large scale biological groundwater treatment system of 100m³/h is constructed and operated at the site.
|Duration||Q3 2017 - Q4 2018|
|Contract||Time and expenses|
|Contamination||BTEX and MTBE|
|Techniques||Soil vapor extraction, P&T and biosparging|
Biological groundwater treatment system (100m³/h) (5 bioreactors)
Conventional groundwater treatment system - polishing (stripping tower, sand filtration and WAC filtration)
Soil vapour treatment system based on GAC filtration
|Project value||> 700.000 €|
in water (MTBE)
|Number of wells||
12 soil vapor extraction wells
20 biosparging wells
15 extraction wells
In-situ: aerobic biodegradation, air-/biosparging, pump and treat & soil vapour extraction
Treatment system: conventional air abatement, biological groundwater treatment & conventional groundwater treatment
Contamination: BTEX and mineral oils & MTBE