Petrox bioremediation is used to remove petroleum contamination from soil and water under many different conditions. From surface spills to deep soil and ground water contamination, Petrox has successfully removed the contamination and environmental risk. This summary of case studies demonstrates the applicability of Petrox bioremediation to the full range and life cycle of petroleum spills. Click here to view the document.
When a source of ground water contamination or contaminant vapors is present under a building, efforts to mitigate the spread of contamination may continue indefinitely with mounting costs. Bioremediation may be used to remove the source of vapors or ground water contamination without damage to the building or interrupting operations.
There are many examples of this approach in the case studies on this site. You can call us to find whether this approach is applicable to your site and the potential cost savings.
Bioremediation Using Petrox EC Under a Factory Floor
The US Patent Office has granted a patent for bioremediation of perchlorate in contaminated media to Michael Saul of CL Solutions and Andrew Irwin of Irwin Engineers of Natick, Massachusetts. This patent is based on the application of bioremediation to remediate perchlorate contaminated soil, sediments and ground water at a site in Massachusetts. CL Solutions and Irwin Engineers collaborated on the the remediation of the site, where the perchlorate concentrations were reduced by orders of magnitude in one year of active treatment. The project is a featured case study elsewhere on this site.
Petrox bioremediation of surface spills and TPH accumulation in drainage ditches and maintenance areas is simple. Using a simple manual sprayer, the Petrox is applied to the soil surface. The Petrox microbes begin bioremediation immediately to enhance natural digestion of the petroleum, like probiotics for petroleum destruction. Unlike detergents that wash the visible oil deeper in the soil, Petrox microbes destroy the all of the oil.
The following chart and table show the results of the application of Petrox to petroleum-contaminated soil in a drainage ditch. After about 60 days, the TPH concentration was reduced by 67% in one location and over 90% in three locations. A second application to the 30 ft. north area reduced the concentration even more.
The problem was solved for a total Petrox cost of $600.
Historical industrial sites often have deposits of fill material containing a wide range of organic contaminants. Perched ground water present in the base of the fill is usually impacted by the contaminants and may provide a mechanism for off-property migration of the contaminants. The organic contaminants are wide spread throughout the fill without a well defined source area. Cost-effective remediation is difficult with this combination of conditions.
Bioaugmentation with CL-Out or Petrox can remove the contaminants from the fill and perched water by destruction in place. The organisms in CL-Out and Petrox can metabolize a wide-range of organic chemicals at concentrations from separate-phase layers to part per trillion levels. Soil and ground water contaminants are addressed simultaneously though injection of the microbes without disturbing the site operations.
The following table shows typical results from a single application of Petrox to contaminated soil and perched ground water on July 10, 2011. The remediation progress was tracked by ground water monitoring because it was the easiest sampling method once wells were in place.
The results show that within 30 days the contaminant concentrations in perched water were reduced by 50%. After 60 days there was slight rebound in come of the contaminants, showing that more soil treatment may be necessary if lower cleanup goals needed to be maintained.
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