A Desalination Success Story, Ed Archuleta


Published on

Published in: Technology, Business
  • Be the first to comment

  • Be the first to like this

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

A Desalination Success Story, Ed Archuleta

  1. 1. A Desalination Success Story Texas Groundwater Summit August 29, 2012 - Austin, Texas Ed Archuleta, P.E., President & CEO El Paso Water Utilities
  2. 2. El Paso, Texas ProfileSixth largest city in TexasLocated in the ChihuahuanDesertEPWU service area: 800,600peopleOver 300 days of sunshine, sunshine,70° average daily temperature70°Low humidity and averagerainfall of 9”-10” per year
  3. 3. Regional Water Resources Elephant Butte Dam UNITED STATES NEW MEXICO Hueco BolsonMesilla Bolson EL PASO TEXAS TEXAS West Texas Ciudad Juárez Aquifers MEXICO
  4. 4. Diversified Resources50-Year Water Resource Management Plan adopted in 1991 Surface Reclaimed Conservation Water Water Groundwater Desalination Importation
  5. 5. Kay Bailey Hutchison Desalination Plant Opened in 2007 to deal with: Drought Emergency situations Growth Brackish water intrusion
  6. 6. Kay Bailey Hutchison Desalination Plant Award winning plant A model for other water utilities Research facility Toured by national and international visitors
  7. 7. Desalination Plant Details Up to 27.5 MGD capacity Raw water forced through membranes to separate salts and contaminants 5 skids Usually runs at 1-2 skids Operated at full capacity for the first time in May 2012
  8. 8. Reverse Osmosis Membrane Compared to the Constituents (Units of Microns) H2O 0.0002m NaCI 0.002m Sugar 0.003m Virus 0.1m Bacteria 10m
  9. 9. Desalination Plant Water Quality Blend Wells 1,000 ppm To Distribution System 700 ppmSupply Wells 2,500 ppm Permeate Concentrate 12,000 ppm
  10. 10. Concentrate Disposal3 Injection WellsSurface InjectionFacilitiesConcentrate Pipeline(22 mi)Less costly and lessenvironmental impactthan evaporation
  11. 11. Kay Bailey Hutchison Desalination Plant Production 2,000,000 Unprecedented 1,800,000 Freeze & Reduction of Surface Water 1,600,000Thousand Gallons Reduction of Surface Water 1,400,000 1,200,000 1,000,000 800,000 600,000 2007 2008 2009 2010 2011 2012 2012 Jan-July Projected
  12. 12. Million Gallons 0 20 40 60 80 100 120 140 1-May 160 2-May 3-May 4-May 5-May 6-May 7-May 8-May 9-MayDesalination Plant 10-May 11-May 12-May 13-May 14-May 15-May 16-May 17-May 18-May 19-May 20-May 21-MayStored Pond Water 22-May 23-May 24-May May – June 2012 25-May 26-May Water Resources Used 27-May 28-May 29-MaySurface Water 30-May 31-May 1-Jun 2-Jun 3-Jun 4-Jun 5-Jun 6-Jun 7-Jun 8-JunGroundwater 9-Jun 10-Jun 11-Jun
  13. 13. Capital Costs (21 Contracts)Production Wells and Collectors $ 32 MillionPlant and Near-Plant Pipes $ 40 MillionConcentrate Disposal $ 19 Million Total Cost $ 91 Million Disposal Production Wells Plant
  14. 14. Financing for Desalination Facilities by Source (Million)Congressional Appropriations (requires 45% local match) $26.0Texas Water Development Board (interest free loan) $ 1.0EPWU Bonds and Cash $60.7Army’s Contribution (in kind) $ 3.3TOTAL $91.0
  15. 15. Cost in Dollars Per 1,000 GallonsG $0.00 $0.50 $1.00 $1.50 $2.00 $2.50 $3.00 $3.50 $4.00 $4.50 ro un d w at erSu rf ac e W at er D es al in at io n R ec la im ed Cost Comparison Im po rt at io n
  16. 16. Financial ImpactsPresent Value of Supply Portfolio from 2012 to 2060 No desal Increases water supply PV costs by $553 million No reuse Increases water supply PV costs by $603 million No desal and no reuse Increases water supply PV costs by $967 million
  17. 17. EPWU Triple Bottom LineENVIRONMENTAL SOCIAL FINANCIAL (> $15.7M) (> $2.4M) (967M)Carbon footprint Air quality related health 74% cost saving toreduction ($15.77M) risk reduction ($2.4M) supply water to allEnergy savings 3.6M Supply reliability (+) EPWU customersMWh Climate-insensitiveAir quality (+) supply source (++)Groundwater quality (+) Sustaining agriculturalSurface water (+) communities (+)Carbon footprint ofpiping (+)
  18. 18. Summary A diversified water resource strategy is key Desalination, reuse and conservation can be effective management tools Desalination costs have decreased substantially Desalination and reuse are much more cost-efficient than importation
  19. 19. For More Information ContactEd Archuleta, P.E.President & CEOEl Paso Water UtilitiesOffice: 915.594.5501earchuleta@epwu.org