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Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
Ensuring a Safe Sustainable Future Water supply
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Ensuring a Safe Sustainable Future Water supply

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  • Thermal ProcessHeats saline water that produces water vapor which is condensed and collected as freshwaterMembrane ProcessPermeable membranes which separate salts from waterCan be pressure-driven (reverse osmosis) or voltage-driven (electrodialysis)
  • Produces toxic by-products that require disposalSaltsBrine
  • Brackish groundwater is abundant in TexasEstimated at 2.7 billion acre-feetImportant desalination water supply optionChallengesLack of detailed information on parameters related to desalination for brackish aquifers2003 study estimating volumes was limited in assessment of groundwater quality
  • Funding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parametersFunding received in 2009 to implement a program to characterize brackish aquifers in Texas and develop models to aid in the development of innovative desalination technologiesGoalsMap and characterize brackish aquifers using existing aquifer dataConstruct groundwater flow models to determine aquifer productivityDevelop better tools to assess parameters
  • Feasibility study in progress Use of a Class V aquifer storage wellAppropriated surface water for subsequent retrieval will be injected into a geologic formation, group of formations, or part of a formation capable of underground storage
  • Discuss importance of optionsDesalination Reuse Brackish Groundwater Desalination Rainwater HarvestingAquifer Storage and Recovery
  • Houston ship channel projectreclaimed wastewater for boiler feedwater makeup is considered technically feasible and could save the Houston Ship Channel industries 34 percent in costs, totaling up to nearly $33 million per year. • Other project benefits include: o Provides up to 50 mgd of new water supplyDirect reusePiped directly from wastewater treatment plant to point of useCommonly used for power plant cooling waterIndirect reuseRe-enters a river, stream, or aquifer
  • Funding for initial infrastructure$4 billion to meet 2060 demandsMostly for treatment plants and pipelines
  • Capture, storage and use of rainwaterRenewed interest in a forgotten practiceOne inch of rainfall that falls on a 2,000 square foot roof yields 1,000 gallons of harvestable waterAverage household systems can collect as much as 32,000 gallons per year in TexasSuitable for use in landscape irrigation, household use, and may be suitable for drinking with minimum treatment
  • The atmosphere contains 0.001% of the Earth’s total water reservoir volume of 350 million cubic milesWater-from-air technology converts the humidity in the atmosphere to liquid water using refrigeration methods that cool the air below its “dew point” Site-specific designs for tropical coastal sites with access to deep, cool ocean waters that are used as a coolant.Freshwater is produced from the atmosphereDesalination is not involvedBrine or solid salt is not produced
  • Transcript

    • 1. Ensuring a Safe, Sustainable Future Water Supply
    • 2. Water usage in Texas will exceed the available water supply by 2060 • Rapid population growth is projected • A single source will not be adequate to supply demand • Diverse combination of technologies must be developed and implemented
    • 3. Future Water Demands State of Texas • 8.5 million acre-feet per year of new water supplies needed to meet 2060 demand • One acre-foot is equivalent to approximately 326,000 gallons
    • 4. Meeting Future Demand • Strategic Water Management • Using existing sources wisely • Conservation • Innovative Water Technologies • • • • • Desalination Brackish Groundwater Desalination Aquifer Storage and Recovery Reuse Rainwater Harvesting
    • 5. Desalination • Process of removing dissolved salts from saline water • Infinite supply – 370 miles of Texas coastline – 67,000 - 112, 000 acre-feet / year capacity
    • 6. Desalination Benefits & Challenges • Benefits – Drought-proof source – Cost effective option due to optimization of existing technology • Challenges – Higher TDS concentration, higher energy costs – Produces toxic by-products that require disposal
    • 7. Brackish Groundwater Desalination • Important desalination water supply option • Brackish groundwater is abundant in Texas – Estimated at 2.7 billion acre-feet • Challenges – Lack of detailed information on water quality parameters – Inadequate assessment tools
    • 8. Brackish Resources Aquifer Characterization System (BRACS) • Funding received in 2009 – Map and characterize brackish aquifers – Develop better tools to assess parameters – Groundwater flow models to determine aquifer productivity – Develop pilot scale models of innovative desalination technologies
    • 9. Aquifer Storage and Recovery • Appropriated surface water stored in wet years for subsequent retrieval during drought • Injected into a geologic formation capable of underground storage • 67 Class V aquifer storage wells in use Texas • Many more available
    • 10. Aquifer Storage and Recovery Source: Texas Water Development Board
    • 11. Reuse • Reclaimed Water • Domestic or municipal wastewater • Treated to a quality suitable for reuse – Direct reuse – Indirect reuse • Not the same as grey water
    • 12. Reuse Challenges • Funding for initial infrastructure – $4 billion to meet 2060 demands – Mostly for treatment plants and pipelines • Water rights / regulatory issues • Water quality • Balance between human and ecological needs
    • 13. Rainwater Harvesting • Renewed interest in a forgotten practice • 1”of rain on a 2,000 sq foot roof yields 1,000 gal of useable water • Average system collects about 32,000 gal per year • Suitable usages – Landscape irrigation – Household usage – Drinking water (with minimum treatment)
    • 14. Emerging Technologies • Atmospheric water generation • Solar powered water farms • Solar powered desalination
    • 15. Atmospheric Water Generation • Freshwater is produced from the atmosphere • Converts humidity to liquid water • Cools the air below its “dew point” • Site-specific designs • Brine or solid salt is not produced-no desalination
    • 16. Solar Powered Water Producing Farms • Clean drinking water from air and sunlight • Eliminates the need for fossil fuel power sources • Low cost Source: Airwaterwell - Water from Air.com
    • 17. Solar Powered Desalination Unit • Large scale production • Eliminates the need for adjacent power plant • Does not generate brine or solid salt Source:desalwave.com
    • 18. The time to plan for the future is now. Humankind cannot continue to squander our most precious resource. There is no life without water.
    • 19. There is No Substitute Source: witicitafalls.gov
    • 20. References www.twdb.state.tx.us/ www.airwaterwell.com/ www.watair.com www.desalwave.com/

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