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Water and energy Chicago 09 - Paul O'Callaghan, O2 Environmental

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This paper outlines the energy used in providing water services and technologies and approaches to reduce this use and generate energy from wastewater. Presentation by Paul O'Callaghan CEO of O2 …

This paper outlines the energy used in providing water services and technologies and approaches to reduce this use and generate energy from wastewater. Presentation by Paul O'Callaghan CEO of O2 Environmental at a Water Innovations Alliance conference 2009 in conjunction with Global Water Intelligence.

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  • 1. • Point 1 Water & • Point 2 Energy • Point 3 • Point 4 Water Innovations Alliance • Point 5 Paul O’Callaghan O2 Environmental • Point 6 paul.ocallaghan@o2env.com Tel + 1 6046763581 Complete Paper available for download @ www.o2env.com info@o2env.com
  • 2. Our Current Water System 1. Our current water system is inefficient and energy intensive 2. Due to mounting global pressures we can no longer afford an inefficient and energy intensive system 3. This is driving radical change and creating opportunities for technology development. info@o2env.com
  • 3. info@o2env.com
  • 4. Energy footprint of Water • In the Unites States Water services represents between 1% - 5% of total national energy use • 2-3% of total global energy consumption is utilised in the pumping and treatment of water for industrial and residential use. • 30%-60% of a city’s energy bill is associated with the provision of water services, • U.S. water-related energy use is equivalent to 13% of the nation’s electricity consumption. • The carbon footprint currently associated with moving, treating and heating water in the U.S. represents 5% of all U.S. carbon emissions info@o2env.com
  • 5. How we arrived at where we are today • 1850 – the Water Closet and the Sewer adopted. • 1914 – the Activated Sludge Wastewater Treatment Process invented At this time there were less than 2 Billion people in the world mostly rural • Today: 6 Billion people, mostly urban • Future: Population and urbanisation are set to increase. info@o2env.com
  • 6. Environmental Concerns led to Construction of WWTP’s info@o2env.com
  • 7. Intelligent Design or Evolution? info@o2env.com
  • 8. The Future - energy associated with providing water services will increase • Increasing Population • Urbanisation • Climate Change • Groundwater depletion • Water scarcity • Rising energy costs and GHG emissions. • Addition of water services in the developing world info@o2env.com
  • 9. Energy Used to Provide Water Services • Energy to Transport Water Water W astewater Management Treatment 26% 29% • Energy to Treat clean Water • Energy to treat waste W ater Water Distribution 45% info@o2env.com
  • 10. There is Energy in Wastewater - The energy in the wastewater produced by one person each day could power a 100 watt light bulb for 5 hours info@o2env.com
  • 11. Energy to Treat Wastewater info@o2env.com
  • 12. Opportunities for Energy Recovery in Wastewater Raw Wastewater Primary Secondary Treated Wastewater Sludge info@o2env.com
  • 13. Sludge to Energy Technologies • Sludge to Syngas Gasification – e.g. KOPF • Sludge to Biogas Anaerobic digestion +/- pre- treatment • Biogas Utilisation Microturbines / Stirling Engines/ Fuel Cells • Sludge to Oil: Pyrolysis e.g. STORS • Sludge to Fuel: Carbonisation & Torrefaction E-coal and E- Fuel • Supercritical Water Oxidation: Aquacritox info@o2env.com
  • 14. Slurry Carb Process info@o2env.com
  • 15. Opportunities for Energy Recovery in Wastewater Raw Wastewater Primary Secondary Treated Wastewater Sludge info@o2env.com
  • 16. Energy from Wastewater – Anaerobic Membrane Bioreactors • Proposed demonstration plant at the Masdar Ecocity in Abu Dhabi. – Microbial Fuel Cells • The Israeli company EMEFCY is marketing the MEGAWATTER process which does just this. – Advanced Primary Treatment • Micromedia Filtration have a demonstration plant operating in Woodsville, New Hampshire info@o2env.com
  • 17. Microbial Fuel Cell info@o2env.com
  • 18. Energy efficient methods of meeting water challenges • Water quantity 1. Increased Efficiency: e.g. Irrigation & Leakage 2. Alternative models for providing water services: e.g. decentralised, rainwater use 3. Water Re-use - 30% <energy than Desal 4. Forward Osmosis for Desalination • Water quality – Have different grades of water – Recover energy from wastewater – Alternative model: source separation and re-use info@o2env.com
  • 19. • Point 1 Water & • Point 2 Energy • Point 3 • Point 4 Water Innovations Alliance • Point 5 Paul O’Callaghan O2 Environmental • Point 6 paul.ocallaghan@o2env.com Tel + 1 6046763581 Complete Paper available for download @ www.o2env.com info@o2env.com