Altamonte Springs is putting its wastewater where its mouth is. The city has rolled a movable hydrothermal unit into its regional water reclamation plant that turns treated sewage into crude oil and gas while slashing levels of persistent “forever chemicals,” according to city leaders. If the pilot proves it can scale, officials say it might both shield local waterways and trim long-term wastewater treatment costs for a region that keeps flushing more biosolids as growth surges.
How the technology works
The setup relies on hydrothermal liquefaction, or HTL, which uses intense heat and pressure to crack biosolids into a biocrude oil and a combustible gas while destroying many PFAS compounds, according to Central Florida Public Media. Project engineers and the vendor say the process spits out sterile water, and the oil and gas can either be refined into diesel or used on-site to run generators.
Funding and partners
The demonstration is backed by a $750,000 award from the Florida Department of Environmental Protection’s Innovative Wastewater Technologies Grant Program, according to Florida Department of Environmental Protection records. Altamonte Springs is teaming up with engineering firm AECOM and technology provider Genifuel on the pilot, and has circulated a press packet highlighting the on-site display at the Altamonte Springs Regional Water Reclamation Facility, according to city materials posted on GovLaunch.
What officials say
City officials told reporters the system is designed to do double duty: generate usable energy and strip out contaminants that can damage nearby waterways, as reported by WFTV. The next step, they say, is to see whether the approach can be scaled across the city to cut disposal costs and reduce risks tied to land application of biosolids.
Where it fits in Altamonte's water plans
Altamonte Springs is not starting from scratch on high-tech water. The city already runs the pureALTA pilot, which treats reclaimed water to drinking-water standards, and staff says the HTL demonstration could plug into that broader reuse strategy, according to the city’s project page on the municipal website. pureALTA processes thousands of gallons each day and is a key piece of the city’s long-term effort to conserve aquifer supplies and lean less on energy-hungry treatment methods.
PFAS and the bigger picture
PFAS are a class of man-made chemicals that resist breaking down and have been linked to health concerns. Federal regulators are pushing to figure out how to detect, treat, and destroy them, according to the EPA. New rules and guidance are nudging utilities toward technologies that can actually destroy PFAS instead of just concentrating the chemicals in sludge or other waste streams.
Next steps and timeline
Florida Department of Environmental Protection staff are building an online dashboard so the public can track results from this and other pilots, and project leaders expect a final report by fall, Central Florida Public Media reported. City officials say they are focused on confirming the early results and deciding whether the sewage-to-fuel approach can be expanded across the region to cut costs and curb PFAS risks for Central Florida.
