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Energy Solutions Teleworkshop Series: Using Wastewater for Heating, Cooling, and Greenhouse Gas Reduction

Nov 25 2008 - 12:00pm to 1:00pm

Please join us for the BCSEA's next Energy Solutions Teleworkshop on "Using Wastewater for Heating, Cooling, and Greenhouse Gas Reduction". Our guest speaker will be Stephen Salter, PEng, who travelled from Victoria to Sweden in 2006 to learn first-hand about Sweden's successful recovery of heat, electricity, and biogas from treated sewage, and how this could be applied in Canada. Our second speaker will be Chris Baber, PEng, from the City of Vancouver.

Water, energy, food and climate change are connected in both obvious and subtle ways. For example, water is consumed in energy and food production, fossil fuels are consumed to produce food and clean water, burning fossil fuels and producing agricultural fertilizer cause climate change, which in turn is altering rainfall patterns. Enlightened cities are recognizing these relationships, and are reducing their costs and environmental impacts by recovering value from wastewater. This workshop showed how cities are doing this, and discussed the greenhouse gas implications of these recovery practices:

  • Using industrial and municipal wastewater for both heating and cooling
  • Reclaiming minerals from wastewater to replace artificial fertilizer
  • Creating "cooling cells" in cities with reclaimed water
  • Reducing energy consumption with reclaimed water
  • Using the energy in wastewater to pay for its treatment

Stephen Salter

stephen salter

Stephen Salter is a professional engineer who graduated from the United World College of the Atlantic, and from UBC's mechanical engineering program in 1982. Through Farallon Consultants Limited, Stephen specializes in industrial ecology (the business of using waste from one organization as a resource for another) and works with industrial clients and communities to reduce their environmental impacts through conservation and by recovering value from waste. Stephen also develops greenhouse gas inventories and models for certification by third parties based on the ISO 14064 and WRI standards.

In 2006 Stephen visited Sweden to learn how that country recovers energy and other resources from liquid and solid waste. During the visit, federal, regional, and municipal officials explained the economics behind Sweden's integrated resource recovery practices, and how these practices support Sweden's efforts to reduce pollution greenhouse gas emissions. Stephen is also a co-author of Resources from Waste: Integrated Resource Management Study for the Province of British Columbia. The study showed that if managed together, the revenues from liquid and solid waste can be greater than the cost of treatment, and greenhouse gas emissions from cities can be reduced by 20-25%

Read an article by Stephen in the Watershed Sentinel.

Chris Baber

Chris Baber

Chris Baber, P.Eng., represents the City of Vancouver as project manager for the Southeast False Creek Neighbourhood Energy Utility ("NEU"). The NEU is a district energy system that will utilize raw sewage to provide 70 percent of the space heating and domestic hot water requirements of the Southeast False Creek sustainable community development.

Please click here to see all our past teleworkshops.