Most organic compounds are susceptible to remediation with the BIOX® Process. Contaminants that have been successfully treated with Biox include VOCs including MTBE and chlorinated solvents; PCBs; SVOCs including polynuclear aromatic hydrocarbons (PNAs/PAHs); phenols; herbicides and pesticides.
Product releases that have been successfully treated with Biox include petroleum products such as gasoline, diesel fuel, heating oil and kerosene; dry cleaning fluids; and degreasing solvents.
Yes, the BIOX® Process has been used to successfully mitigate chlorinated solvent concentrations approaching 6,500 mg/kg in soils, as well as perched or smeared hydrocarbons.
Yes, free product can be remediated. However, if the thickness is excessive, it may be best to attempt to remove as much product as possible prior to applying the BIOX® Process.
The Biox® Process works very well in remediating contaminants in unsaturated soils where the reagent can be forced into the strata hydraulically. The Biox® Process is particularly successful in reducing contaminant concentrations in source areas.
The BIOX® Process has been shown to effectively reduce contaminant concentrations in saturated soils.
Please note that high contaminant concentrations are limiting to microbial growth, and that the BIOX® Process rapidly reduces contaminant concentrations through chemical oxidation. Because the BIOX® Process is based on hydrogen peroxide technology, there is a potential for microbes coming in contact with this compound to be destroyed. However, a marked increase in microbial plate counts occurs after treatment with the BIOX® Process. The long-term presence (up to 1 year after Biox application) of dissolved oxygen and residual nutrients stimulates microbial growth and metabolic activity (as well as further reducing contaminant concentrations.)
Grid spacing is determined by the type of soil, the depth of treatment, saturated or unsaturated media, as well as contaminant concentrations. This information is site specific and certain site data is necessary before these determinations are made.
When the reagent contacts contaminants, mild off-gassing occurs. The gas produced by this reaction travels up the probe hole to the surface of the treatment area carrying with it foam produced by the reaction. In areas where contaminants are not present, this reaction does not occur.
This question is generally asked by those familiar with the Fenton process where heat and pressure are a normal manifestation of the technology. The BIOX® Process does not generate heat, and only mild off-gassing occurs. Thus, excessive pressures are not produced.
Because the optimum pH of the BIOX® Process is between 7.5 and 8.5, the pH of the site is unaffected.
The BIOX® Process has been used to remediate contaminants under building slabs and basements. A small access port is made in the flooring material and the injection probe inserted. After the reagent has been delivered, the port is sealed.
No. Vinyl chloride is created by anaerobic biological processes; the BIOX® Process is a controlled aerobic technology.
The BIOX® Process has been used to successfully treat mixed contaminant plumes such as petroleum hydrocarbons and chlorinated solvents resulting from releases at dry cleaner and industrial sites.
Contaminant concentrations may increase (typically 1-2 months) after application as a result of desorption by biological surfactants associated with the biodegradation process. Desorption of contaminants adhered to soil particles in both the saturated and unsaturated zone can contribute to an increase in groundwater contaminant concentrations, especially if free product is present. The concentrations will subsequently decrease over time.
The BIOX® Process reduces contaminant concentrations through chemical oxidation followed by enhanced biodegradation. Upon completion of the chemical oxidation phase, contaminant concentrations have been significantly reduced and the reagents begin generating dissolved oxygen. The long-term presence (up to 1 year) of dissolved oxygen and residual nutrients stimulates microbial growth and metabolic activity, further reducing contaminant concentrations.