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Colorado ZLD Pilot An Update

Colorado ZLD Pilot An Update. Phil Brandhuber PhD HDR Engineering Karla Kinser PE MWH. Concentrate Disposal Options. Surface water body Municipal sewer Deep well injection Land application Evaporation pond Brine minimization/zero liquid discharge. Project Update. Colorado Project

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Colorado ZLD Pilot An Update

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  1. Colorado ZLD Pilot An Update Phil Brandhuber PhD HDR Engineering Karla Kinser PE MWH

  2. Concentrate Disposal Options • Surface water body • Municipal sewer • Deep well injection • Land application • Evaporation pond • Brine minimization/zero liquid discharge

  3. Project Update • Colorado Project • Demonstration of Membrane Zero Liquid Discharge for Drinking Water Systems • Pilot test brine minimization technologies at two locations in Colorado • Poster at this conference last year • Today discuss technology assessment and selection process.

  4. What Minimization Technologies are Available? • Thermal • Pressure Driven • Electric Potential • Alternative

  5. Thermal Technologies

  6. Pressure Driven Technologies

  7. Pressure Driven Technologies

  8. Pressure Driven Technologies

  9. Electric Potential Driven Technologies

  10. Advanced Technologies

  11. Technologies Selected for Detailed Evaluation • Membrane-based • Dual Reverse Osmosis with Intermediate Demineralization • Electric Potential-based • Electrodialysis Metathesis (EDM)

  12. Electrodialysis Metathesis (EDM)

  13. Dual RO with Intermediate Treatment Antiscalant Overflow Permeate Booster Pump LP Pump HP Pump Groundwater Primary RO Secondary RO Cartridge Filter 50 mm Bag Filter Hold Tank Chemicals Antiscalant Acid Concentrate Sand Filter Sludge Intermediate Treatment Distillate Brine Concentrator Evaporation Pond

  14. Implementation of EDM for Brine Minimization

  15. Water Quality Overview

  16. Modeling Results - RO Based Train No Intermediate Treatment With Intermediate Treatment

  17. Summary of Detailed Evaluation • Key: Without Intermediate Treatment || With Intermediate Treatment • Current overall recovery without brine treatment: Brighton 80%, La Junta 75%

  18. Recommendations for Brine Minimization Technologies

  19. The Ideal ZLD Solution… Badwater Salt Flats Death Valley, CA

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