More and more cities are making biogas out of tons of wasted food instead of sending it to landfills
One of the country’s largest facilities is in Brooklyn, New York, which in 2016 began using its own Newtown Creek Wastewater Treatment Plant to process 130 tons of liquefied food waste, roughly 3 percent of the city’s daily food waste. And food waste is just a fraction of the sewage that the plant handles in its eight gleaming egg-shaped silver tanks.
But despite the proven technology, Newtown is still among a minority of the nation's wastewater facilities handling food waste. Indeed, none of New York’s remaining 13 wastewater treatment plants processes food waste. Cities have been slow to divert food waste to anaerobic digestion because it is more expensive to start than composting and requires new sites built by private investors or costly updates to existing public infrastructure. Digesters are more expensive to build and maintain than composting facilities like the one in San Francisco, but they have the benefit of producing two valuable byproducts: a rich soil additive prized by agriculture operations and biogas, which can be sold and reused as fuel.
12 Nov 2019, BROOKLYN, NEW YORK: The view of the Newtown Creek Wastewater Treatment Plant from the top of the"digester eggs." CREDIT: SARAH BLESENER FOR POLITICO | Sarah Blessner for Politico Magazine
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