Resources from Sewage: Power from the People "Ask not what we must do for sewage - ask what sewage...
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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
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Transcript of Resources from Sewage: Power from the People "Ask not what we must do for sewage - ask what sewage...
Resources from Sewage: Power from the People
"Ask not what we must do for sewage -ask what sewage can do for us."
Stephen Salter, PEngSeptember 26, 2005
What's the goal of treatment?1. Minimize all environmental impacts
(water, land, and air)
2. Protect human health
3. 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 ProgramContaminated Sites Regulation Environmental Management Act Fisheries Act Health Canada Recreational Water Guidelines Municipal Sewage Regulation Persistence and Bioaccumulation RegulationsWaste Discharge Regulation
What is Pollution?
Grease & Oil5,000,000 kgs/year
Organics 16,000,000 kgs/year
Metals & minerals 2,500,000 kgs/year
Fisheries ActFisheries Act
Canadian Canadian Environmental Environmental Protection ActProtection Act
Environmental Environmental Management ActManagement Act
It's a Resource
Metals & minerals 2,500,000 kgs/year
Grease & oil5,000,000 kgs/year
Organics 16,000,000 kgs/year
$3,000,000 as biodiesel
$3,000,000 as biogas
Kyoto & green power $Kyoto & green power $ creditscredits
$700,000
Reduced greenhouse gases: Reduced greenhouse gases:
33,000,000 kgs/year33,000,000 kgs/year
Some treatment options
Constructed wetlands
Anaerobic treatment (resource recovery option)
Aerobic treatment (traditional option)
Organicwaste
Traditional vs. recovery
Oxygen
CO
2
Met
han
eAerobic Anaerobic
CO
2
The recovery option
Biogas
Scrubber
Biogas
Sludge
Treated Sewage
Digester
Raw Sewage
Scrubber
Biogas
Mineral/metal ingots
Pyrolysis
Digester
Biogas
Cooker
180ºC
Other Organic Waste
What recovery looks likeKristianstad biogas plant, Sweden
Lille, France runs 100 buses on biogas
What recovery looks likeBiofuels in Europe
Sweden runs 5,300 vehicles & much of its transit system on biogas
There are over There are over 3,000 biogas 3,000 biogas plants in Europeplants in Europe
Next-generation sewagenuityDockside: electricity, biofuels, heat, and compost
Microbial fuel cell
Can you imagine...Can you imagine...Our transit buses running on biogas?
Politicians driving biofuelled cars to work?Whale watching boats running on biodiesel?
The costs & benefits
CostsCapital: $150-180M before grants, $50-60M after
Operating: $7-10M/yr, less $ from resources
Total: ~$90/home/year
BenefitsLess water, land and air pollution
Source of sustainable energy
Value of enhanced tourism & our technology
You could ask that existing environmental laws be applied here, as they are elsewhere in Canada:
Environment Minister Stéphane Dion:[email protected]
Minster of Environment Barry Penner:[email protected]
Would you like to help?
