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Resources from Sewage: Power from the People

Resources from Sewage: Power from the People. "Ask not what we must do for sewage - ask what sewage can do for us.". Stephen Salter, PEng September 26, 2005. What's the goal of treatment?. Minimize all environmental impacts (water, land, and air) Protect human health

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Resources from Sewage: Power from the People

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  1. Resources from Sewage: Power from the People "Ask not what we must do for sewage -ask what sewage can do for us." Stephen Salter, PEng September 26, 2005

  2. What's the goal of treatment? • Minimize all environmental impacts(water, land, and air) • Protect human health • Comply with environmental laws, causing no harm to fish & habitat: Approved Water Quality Guidelines Canadian Environmental Protection Act Canadian Environmental Quality Guidelines Canadian Shellfish Sanitation Program Contaminated Sites Regulation Environmental Management Act Fisheries Act Health Canada Recreational Water Guidelines Municipal Sewage Regulation Persistence and Bioaccumulation Regulations Waste Discharge Regulation

  3. Environmental Management Act Canadian Environmental Protection Act Fisheries Act What isPollution? Grease & Oil 5,000,000 kgs/year Organics 16,000,000 kgs/year Metals & minerals 2,500,000 kgs/year

  4. It's a Resource Kyoto & green power $credits Reduced greenhouse gases: 33,000,000 kgs/year $3,000,000 as biodiesel Grease & oil 5,000,000 kgs/year $3,000,000 as biogas Organics 16,000,000 kgs/year $700,000 Metals & minerals 2,500,000 kgs/year

  5. Some treatment options Constructed wetlands Aerobic treatment(traditional option) Anaerobic treatment (resource recovery option)

  6. Traditional vs. recovery Methane CO2 CO2 Oxygen Organicwaste Aerobic Anaerobic

  7. Scrubber Biogas Scrubber Biogas Pyrolysis Biogas Biogas Cooker 180ºC Sludge Raw Sewage Digester Digester Other Organic Waste Mineral/metal ingots Treated Sewage The recovery option

  8. What recovery looks likeKristianstad biogas plant, Sweden

  9. There are over 3,000 biogas plants in Europe Lille, France runs 100 buses on biogas Sweden runs 5,300 vehicles & much of its transit system on biogas What recovery looks likeBiofuels in Europe

  10. Next-generation sewagenuity Dockside: electricity, biofuels, heat, and compost Microbial fuel cell

  11. Can you imagine...Our transit buses running on biogas?Politicians driving biofuelled cars to work?Whale watching boats running on biodiesel?

  12. The costs & benefits Costs Capital: $150-180M before grants, $50-60M after Operating: $7-10M/yr, less $ from resources Total: ~$90/home/year Benefits Less water, land and air pollution Source of sustainable energy Value of enhanced tourism & our technology

  13. Would you like to help? You could ask that existing environmental laws be applied here, as they are elsewhere in Canada: Environment Minister Stéphane Dion: stephane.dion@ec.gc.ca Minster of Environment Barry Penner: barry.penner.mla@leg.bc.ca

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