5/08/2017

Portland to fuel city vehicles with sewage fumes


The City of Roses' poop-to-power plan is nothing to hold your nose at.

Portland, Oregon’s reputation for setting itself apart from the pack — and then some— is well deserved.

And while not the first city to capture noxious sewage gas and convert it into vehicle fuel, Portland’s newly approved $9 million "poop-to-power" scheme is certainly ambitious, aiming to cut greenhouse gas emissions by 21,000 tons annually while producing enough homegrown, revenue-generating natural gas to power the equivalent of 154 sanitation trucks for a year.

Portland Environmental Services, the city's wastewater and stormwater management utility, anticipates that capturing methane-rich waste gas produced at the Columbia Boulevard Wastewater Treatment Plant and converting it into renewable natural gas (RNG) will bring in a minimum of $3 million per year through sales of the fuel. The city itself will, of course, also power some its own vehicles with the diesel-replacing poop fuel...more