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Semelhante a Laser Guided Remediation(TM) of MGP NAPL EPRI Jan 2010
Semelhante a Laser Guided Remediation(TM) of MGP NAPL EPRI Jan 2010 (20)
Laser Guided Remediation(TM) of MGP NAPL EPRI Jan 2010
- 1. LASER-GUIDED REMEDIATION OF MGP NAPL Dakota Technologies, Inc. - Fargo, ND, USA Randy St. Germain, President EPRI MGP 2010
- 4. the aromatics prefer NAPL to water by factor of 100-1,000,000! that’s why NAPL is the “source term” MGP NAPL 150-1750 2.1-3.1 78.1 - 106.16 1 BTEX 0.00053 6.4 276 2 indeno[1,2,3-cd]pyrene (193-39-5) 0.0043 6.06 252.32 2 benzo[k]fluoranthene (207-08-9) 0.014 6.06 252.32 2 benzo[b]fluoranthene (205-99-2) 0.0038 6.0 252.32 1,2 benz[a]pyrene (50-32-8) 0.0057 5.6 228 1 benz[a]anthracene (56-66-3) 0.26 5.1 202.26 1 fluoranthene (206-44-0) 0.135 4.9 202.26 1 pyrene (129-00-0) 0.045 4.5 178.24 1 anthracene (120-12-7) 1.29 4.5 178.24 1 phenanthrene (85-01-8) 1.98 4.18 166 1 fluorene (86-73-7) 3.42 4.33 154.21 1 acenaphthene (83-32-9) 31.7 3.5 128.16 1 naphthalene (91-20-3) Water solubility at 25°C (mg/L) log Kow Molecular weight Compound (C.A.S.N°)
- 10. MGP Sites Sooty Creek Gas Co., Former MGP, TypiVille, USA release point black, viscous, obvious tar changing as it travels often “refined” to a runny oil (orange) clay feature that is preventing DNAPL from getting deeper (not always... a fracture!) peat or shell hash thin sheen at groundwater surface? yes… sometimes NAPL in angular gravel or running sands = tough sampling water over seds groundwater flow is often complicated - doesn’t behave classically rare “unfilled” gravel lens
- 11. TarGOST ® Tar-Specific Green Optical Screening Tool real time “NAPL hunt” (TRIAD) Detailed Conceptual Model higher quality information for higher quality engineering/decisions
- 13. The Basics of TarGOST and Direct Push
- 15. TarGOST – semi-quantitative response TarGOST response to a wide variety of MGP NAPLs (lab analysis would certainly vary with method/tar as well) 1.0 10.0 100.0 1000.0 10000.0 10 100 1,000 10,000 100,000 1,000,000 10,000,000 Spiked NAPL Concentration (ppm) TarGOST (Signal %RE) NY NAPL Fine Sediment NY NAPL on Sand MA Tar on Sand IN Tar on Sand NH Tar on Sand CT Tar and Sand
- 18. TarGOST – Coal Tar Site Day 1 Day 2 Day 3 Day 4
- 20. Field Data – Wood Treater: LG-ISCO MW Before ISCO After ISCO