I wonder how many cities around the world are looking at WET......I just noticed this on the City of Ottawa site and it refers to one of the SHRC projects in Vancouver, so one can only assume most or all cities in the world would be looking at WET regardless if they proceed with the technology or not !!!!!
https://open.ottawa.ca/pages/Maps
Wastewater Energy Transfer (WET) refers to the capture and use of heat found within sewer systems. Using heat exchanger technology, energy can be drawn from wastewater to provide low carbon heating and cooling solutions for individual buildings, new developments, and even whole communities.
An example of a WET system was deployed in Vancouver, through the False Creek Neighbourhood Energy Utility.(link is external) This system captures heat from the wastewater from showers, dishwashers and other sources and recycles it back into the buildings.
In 2021, the City of Ottawa undertook a study to explore the potential for wastewater energy transfer systems in Ottawa. The study examined various options for WET technologies and their respective opportunities for deployment within the City of Ottawa.
The interactive map below shows the sewer lines in the City of Ottawa with sufficient flow rates to potentially support commercial scale wastewater energy transfer systems (that which is defined as Technology 3 in the study).
Technologies 1 and 2 can be deployed in more locations because they can use lower flow rates. The City of Ottawa has historical measured flow data for some locations. The City also has flow data sensors that can be deployed upon request for a fee. To submit a request for historic flow data or to deploy flow measuring technologies in a specific location, please email: sewerflows@ottawa.ca