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Passive Treatment Success Stories

Passive Treatment Success Stories. Characterize Mine Water. Net alkaline (Fe and Mn). Net acid (Fe, Al and Mn). DO, Fe 3+ , Al all < 1 mg/L (high Fe 2+ ). DO, Fe 3+ , Al any > 1 mg/L. DO, Fe 3+ , Al any > 1 mg/L Fe < 10 mg/L. Anoxic Limestone Bed. High Fe 2+. Net acid. Net Alkaline.

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Passive Treatment Success Stories

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  1. Passive Treatment Success Stories

  2. Characterize Mine Water Net alkaline (Fe and Mn) Net acid (Fe, Al and Mn) DO, Fe3+, Al all < 1 mg/L (high Fe2+) DO, Fe3+, Al any > 1 mg/L DO, Fe3+, Al any > 1 mg/L Fe < 10 mg/L Anoxic Limestone Bed High Fe2+ Net acid Net Alkaline Ponds Ponds Oxic Limestone Bed (drainable) Vertical Flow Pond Repeat As Needed Wetland Ponds Ponds Mn Wetland Oxic Limestone Bed Mn Final Discharge

  3. Characterize Mine Water Net alkaline (Fe and Mn) Net acid (Fe, Al and Mn) DO, Fe3+, Al all < 1 mg/L (high Fe2+) DO, Fe3+, Al any > 1 mg/L DO, Fe3+, Al any > 1 mg/L Fe < 10 mg/L Anoxic Limestone Bed High Fe2+ Net acid Net Alkaline Ponds Ponds Oxic Limestone Bed (drainable) Vertical Flow Pond Repeat As Needed Wetland Ponds Ponds Mn Wetland Oxic Limestone Bed Mn Final Discharge

  4. Marchand Passive System (Westmoreland County, PA) Wetland Pond C Pond B Pond F Pond E Pond D Pond A Wetland Wetland Sewickley Creek influent Design, permit, construct: $1,250,000

  5. Net Alkaline Mine Water Fe2+ + HCO3- + O2 FeOOH + H2O + CO2

  6. Marchand System, 2006 – 2016

  7. Marchand System Benefits • Sewickley Creek • Youghiogheny River • Water fowl refuge

  8. Characterize Mine Water Net alkaline Net acid DO, Fe3+, Al all < 1 mg/L (high Fe2+) DO, Fe3+, Al any > 1 mg/L DO, Fe3+, Al any > 1 mg/L Fe < 10 mg/L Anoxic Limestone Drain High Fe2+ Net acid Net Alkaline Ponds Ponds Oxic Limestone Bed (drainable) Vertical Flow Pond Repeat As Needed Wetland Ponds Ponds Mn Wetland Oxic Limestone Bed Mn Final Discharge

  9. Anna S Passive Treatment Complex, Tioga County PA Design, permit, construct $2,512,000

  10. CaCO3 + H+ Ca2+ + HCO3- Fe3+ + Al3+ + HCO3-  FeOOH + Al(OH)3 SO42- + 2CH2O  H2S + 2HCO3- Fe3++ Fe2+ H2S  Fe2+, FeS, FeS2, S0

  11. Anna S passive systems, 2004 - 2016

  12. Anna S System Benefits • Babb Creek • Pine Creek • Water fowl refuge

  13. Characterize Mine Water Net alkaline Net acid DO, Fe3+, Al all < 1 mg/L (high Fe2+) DO, Fe3+, Al any > 1 mg/L DO, Fe3+, Al any > 1 mg/L Fe < 10 mg/L Anoxic Limestone Drain High Fe2+ Net acid Net Alkaline Ponds Ponds Oxic Limestone Bed (drainable) Vertical Flow Pond Repeat As Needed Wetland Ponds Ponds Mn Wetland Oxic Limestone Bed Mn Final Discharge

  14. Site #1, Tangascootack Creek, PA Design, permit construct: $151,000

  15. Agri Drain Smart Drainage System(solar powered computer controlled gate valve)

  16. Site #1 system, 2010 – 2017

  17. Site #1 Benefits • Tangascootack Creek • Settling Pond

  18. Questions or Comments?

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