Petroleum Remediation via In Situ Bio-Reactors

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Presentation transcript:

Petroleum Remediation via In Situ Bio-Reactors Eric J. Raes, P.E., LSRP Engineering and Land Planning Dora Ogles, Brett Baldwin, Kate Clark & Anita Biernacki Microbial Insights Inc. Kerry Sublette, Ph.D., Kate Key University of Tulsa

From Humble Beginnings….. The Bio-Trap® Sampler: Rapid formations of indigenous bacteria bio-films Multitude of microbial populations identification and quantification analyzes

The Bio-Trap…

The Bio-Trap… On Steroids

Operation of an Aerobic Bioreactor at Hydrocarbon Sites Bio-Sep beads, nutrient addition, and air sparging encourage microbial growth and reproduction Contaminated groundwater is treated as it moves through the column of Bio-Sep beads Water exiting the reactor carries hydrocarbon-degrading microbes into the aquifer

Aerobic Bioreactor Flow Pattern

From MTBE to PCE PCE et al. MTBE

Case Study No. 1, Toluene Former Industrial site in northern New Jersey Toluene UST was removed in October 2001 Previous remedial efforts failed to achieve goals Soil and groundwater contamination and free phase toluene product has historically been observed in the pilot study area Levels of toluene potentially inhibitory, up to 430,000 ug/L

Aerobic Bioreactor, Test Site 1

Pilot Study Results - IW-1 and Piezometers PZ-3 PZ-2 PZ-1 PZ-4

Pilot Study Results - IW-1 and Piezometers

Pilot Study Results - ISBR Wells

Pilot Study Results - Monitoring Well Results

Star Pupils GW Flow

Case Study No. 2, Chemical Oxidation & Bio Reactors, Unusual Friends

“The Fortuitous Accident”

“The Fortuitous Accident”

“The Fortuitous Accident”

Chem Ox and ISBRs

The combination of Chemical Oxidation & Bio-Remediation is…. Underutilized? Emerging? More efficient than expected.

Case Study No. 3, Benzene in a difficult environment Just Another former Industrial site in northern New Jersey Mid-Level benzene levels in groundwater (~500 ug/l) Meadow mat environment

Pilot Test Results, ISBR Well OB-2; Favorite Child

Pilot Test Results, ISBR Well OB-1; Red Headed Step Child

Formation Well (15’ Down-Gradient)

Issues

Questions?

Then: Surface equipment supporting the bioreactor

Now: Bio-Enhance Control Box