Many times oxygen is injected to improve natural attenuation of petroleum and other contaminants. The results are often less than expected because the beneficial microbes that the oxygen addition is supposed to stimulate are absent or insufficient in numbers. Bioaugmentation has been used to improve the results once the oxygen levels have increased but failed to improve the remediation rate.
The following table shows the results of Petrox bioaugmentation at a site in New Hampshire where the operation of an iSOC oxygen-delivery system failed to achieve stimulated bioremediation. The table shows the improvement of the degradation rates and the achievement of reaching remediation goals.
|Contaminant||Pre-iSOC||After iSOC Installation||After Petrox Application|