At the Londerzeel project, a large LNAPL of phtalates is present due to a fire incident in the 80's. Given the specific pfysico-chemical characteristics of the phtalates a feasibility study was conducted to assess free phases separation, LNAPL mobility and biodegradibility of the phtalate contamination.
Based on the positive outcome of the feasibility study, Greensoil prepared a full scale remediation concept based on a combination of free phase removal by bioslurping and biosparging for residual, non mobile product.
The RAP based on our remedial concpet is currently being prepared. Full scale remedial works are expected to start in Q2 2018.
Specifications
| Location | Londerzeel, Belgium |
| Client | Confidential |
| Duration | Q2-Q3 2017 (Feas. Study) Q2 2018-Q2-2021 FS |
| Contract | Garanteed outcome contract |
| Contamination | Phthalates (DEHP: diethylhexyl phthalate) |
| Techniques | NAPL removal by biolsurpoing, in situ biosparging and aerobic bioremediation |
| Installation |
NAPL extraction system (bioslurping) Biological water treatment (air/water separator, oil water separator, bioreactors & polshing WAC filtration |
In numbers
| Project value | > 250.000 € | |||||||||
| Pure product | 131 ton (estimated) | |||||||||
| Pure product | 1873 m³ (estimated) | |||||||||
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Feasibility test
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Concentration in soil in water |
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| Number of wells |
40 injection and/or extraction wells 20 biosparging wells |
Used techniques
In-situ: aerobic biodegradation, air-/biosparging, (D/L)NAPL removal, pump and treat & multi phase extraction/bioslurping
Treatment system: biological groundwater treatment
Contamination: others
Gallery
