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Water, energy and sustainability

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Water savings is energy savings: …

Water savings is energy savings:
Water not consumed saves energy
Water not transported saves energy
Water reused saves energy
Decentralized, ecological water treatment does all of the above

Published in: Education, Technology, Business

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  • In the past, most discussions of financing needs for energy and water projects assumed that conventional technology will be used. In addition, these discussions assumed energy and water to be separate systems that can be analyzed, designed, and built independently.
  • Now, the interconnections between the separate energy and water systems are being recognized, with significant efforts underway to find mutual efficiencies and new technologies. The ASE Watergy program is one of the leading examples. These are essential and valuable programs; but, as the next slide shows, much more needs to done.
  • Transcript

    • 1. Water, Energy, and Sustainability
    • 2. In a biotech world, water networks are abigger deal than bit streams. You’re notmade out of digital bits – like all livingthings, you are made mostly of water.So that’s where you sensibly place yourhigh tech investments. Bruce Sterling
    • 3. Water is: • An Economic Issue • An Environmental Issue • An Aesthetic Issue • A Food Issue • A Health Issue • A Climate Issue • A Security Issue
    • 4. Our Bottom Line: During the next 10 years, many countries importantto the United States will experience water problems – shortages, poorwater quality, or floods -- that will risk instability and state failure,increase regional tensions, and distract them from working with theUnited States on important US policy objectives. Between now and2040, fresh water availability will not keep up with demand absentmore effective management of water resources. Water problems willhinder the ability of key countries to produce food and generateenergy, posing a risk to global food markets and hobbling economicgrowth. As a result of demographic and economic developmentpressures, North Africa, the Middle East, and South Asia will facemajor challenges coping with water problems. Global Water Security ICA 2012-08 2 February, 2012
    • 5. Remaining Gap 60%Source: McKinsey 2030 Water Resources Group
    • 6. Estimated Cost of Basin Scale Strategies to Address Shortfall: Wastewater Reuse
    • 7. We consumemassive quantities of waterto generate energy,and we consumemassive quantities ofenergy to deliver cleanwater.” Michael E. Weber, “Catch-22: Water vs. Energy”, Scientific American Earth 3.0
    • 8. Water Saving is Energy Saving• Water not consumed saves energy• Water not transported saves energy• Water reused saves energy• Decentralized, ecological water treatment does all of the aboveMoving 1 billion gallons of water one mile consumes16,500 megawatt hours,= annual consumption of about 1,000 homes
    • 9. The Energy – Water Nexus Energy Water Sources Receiving Water FundsGravity Flow & Fossil Fuel & EcologicalNatural Cycles Fossil Water Synthesis? © 2011 Worrell Water Technologies, LLC
    • 10. Energy Embodied in Water • Direct Energy – To access, move, and treat • Indirect Energy – To build and maintain infrastructure
    • 11. Water Embodied in EnergyPersonal water consumption Water for personal energy Water for personal food Standard Fossil Fuels Bio Fuels Grid ElectricityRenewable Electricity Graphs combine various sources with different values. Scale represents rough order of magnitude
    • 12. Fundamental Change in Real Costs元 ¥€Rp $ ₩ Time • Energy and Materials • Information
    • 13. Desalination is Not Economic Price per Acre Foot 1 Ac Ft = 327,000 gallons Source: Modesto Irrigation District
    • 14. Biofuels Fuel type Water Consumed Water Withdrawn (gallons per mile) (gallons per mile) Gasoline, Diesel, and Electricity from Renewable Source Less than 0.15 Less than 1 Electricity derived from U.S. Grid 0.30 – 0.75 5 – 20 Corn-ethanol 28 36 Soy-based biodiesel 8 10King, C. and Webber, M. “Water Intensity of Transportation.” Journal of ENVIRONMENTAL SCIENCE & TECHNOLOGY / VOL.42, NO. 21, 2008 <http://pubs.acs.org/doi/pdf/10.1021/es800367m?isMac=289642>
    • 15. Water: Yet Another Reason to Push for Wind and Solar Source Gallons Per kWh Wind 0.001 PV Solar 0.030 Nuclear 0.62 Coal 0.49 Oil 0.43 Hydro 18.27Gipe, Paul. “Wind Energy Comes of Age,” 1995 <http://www.awea.org/faq/water.html>