Petrox Bioremediation Prepares Urban Bulk Fuel Facility For Reuse

A 30 acre bulk fuel facility is ready for reuse after remediation of nearly 100,000 tons of petroleum-contaminated soil in an urban setting near Los Angeles. Bulldog Green Remediation of Walnut Creek, California used a proprietary ex situ treatment process combining Petrox organisms in a custom blend to remediate the soils. All soil was treated and reused on site. This closed-loop process eliminated 8,000 truck loads of soil from the roads and landfills in southern California.

The treatment process reduced contaminant concentrations from typical levels of 1,000 to 10,000 mg/kg to less than 100 mg/kg in less than 30 days. This rapid treatment rate made possible continuous cycling from excavation, through treatment, and back filling.

The site is now ready for reuse as a park and other development.

In situ Heavy Oil Bioremediation in Alberta

Using a special microbial blend, Delta Environmental has been successfully bioremediating high concentrations of heavy oil in soil around pipelines and oil production equipment.  At a typical site, Delta reduced the concentration of petroleum C34 to >C50 from 130,000 mg/Kg to less than 10,900 in 30 days.  That is a removal rate of 3,970 mg/Kg/day.  This approach not only benefits the environment and meets green cleanup standards, but saves money and equipment downtime for the facility.

Pesticide Bioremediation

CL Solutions recently completed a field pilot study of bioremediation of mixed chlorinated pesticides. Under the pilot study Petrox treated several cubic yards of soil highly contaminated by a suite of related chlorinated organic pesticides.  The pilot study showed the overall impact was a reduction of the pesticide concentrations by 28% to 93% in 60 days.  The contaminant removal rate was 88 to 100 kg/kg/day.

The full scale implementation is expected to begin in the summer of 2017.

Sulfolane Bioremediation

Sulfolane is an emerging contaminant of concern for potential environmental impact to ground water in Alberta.  CL Solutions recently completed laboratory bench-scale testing that showed the Petrox organisms can efficiently degrade sulfolane.  Under laboratory conditions Petrox organisms metabolized sulfolane at a minimum rate of 33 ug/L/day.  Further lab tests are under way and field scale implementation may proceed in the Summer of 2017.

Land Farming Application Reduces TPH by 90% to 99%

Petrox microbes were added to excavated petroleum-contaminated soil to accelerate the degradation of DRO and ERO total petroleum hydrocarbons. Petrox was added by spraying the surface of the soil with a hydrated Petrox solution.  The microbes were mixed into the soil using a tractor-mounted disc tiller.  photo-2              photo-1

After approximately 60 days, soil samples were taken for testing.  The soils showed 90% to 99% petroleum removal.  The following chart shows the range of DRO and ERO concentrations before and after Petrox treatment.

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