| Background
In order to modernize and expand the company’s premises, it was
necessary to restore a sludge disposal lagoon, as well as an adjacent
site where soil was impacted with hydrocarbons. The lagoon waste
was classified as hazardous, as such, disposal was extremely costly.
As a result, Biogenie was called upon by the client to develop a
cost-efficient alternative.
Solution
Having completed a laboratory treatability study and small-scale
pilot study, Biogenie was in a position to offer a customized and
cost-effective solution for the remediation of hazardous sludge.
An ex situ Biopile process, coupled with a biofilter for treating
gas effluents, was used to treat the sludge and contaminated soil
simultaneously. Biogenie successfully reduced the level of contamination
from a hazardous waste to a domestic solid waste classification,
resulting in significant savings in landfill disposal costs.
Services
- Characterization
study and 3-dimensional visualization of the site to determine
the extent and degree of underground contamination;
- Treatability
study to develop an appropriate biological treatment, notably
for sludge;
- Design
and assembly of treatment equipment;
- Removal
of 11 underground storage tanks followed by the excavation of
sludge and contaminated soil;
- Biotreatment
of approximately 2,000 tons of hazardous waste sludge and 14,000
tons of soil containing petroleum hydrocarbons, monocyclic aromatic
hydrocarbons and phenols;
- Final
disposal in a sanitary landfill site.
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