Applications and Markets

applications

  • PFAS
  • Residuals & Biosolids
  • Animal Waste
  • Industrial Wastes & Sludges
  • Food Waste
  • Landfill Leachate

PFAS

Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS) are a large, complex group of manufactured toxic chemicals that are ingredients in various everyday products. They are also known as “forever chemicals” that are omnipresent in our ecosystem. PFAS can be found in our farms, our drinking water and even our blood, and is known to cause cancer, liver damage, decreased fertility, and increased risk of asthma and thyroid disease. Current PFAS treatment methods like carbon absorption, foam fractionation, and incineration do not eliminate, but instead sequester, concentrate or worse move molecules from one source to the air or landfills. 

AirSCWO™ offers a novel and failproof PFAS treatment option. Treating PFAS concentrate like granulated activated carbon (GAC), ion exchange (IX/IEX) resin, PFAS laden sludge, or any PFAS slurry through an AirSCWO™ system results in >99.9% elimination of PFAS and their derivatives. 

Using AirSCWO™, PFAS from water treatment, wastewater and other industrial sources can be completely eliminated.

Residuals
& Biosolids

Wastewater treatment plants generate millions of tons of sludge, residuals and biosolids that require hauling for off-site disposal or reuse. Pathogens, pharmaceuticals or persistent chemicals such as PFAS are severely limiting reuse options and driving up disposal costs. Ultimately, the emergence of forever chemicals and the difficulty in removing them has irreparably impacted the municipal biosolids cycle. 374Water’s AirSCWO™ Systems allow for on-site transformation of sludges, residuals and biosolids to water, energy and nutrients. This means a complete elimination of pathogens and >99.9% destruction of emerging contaminants (PFAS, pharmaceuticals, microplastics).

It is generally accepted that all sludge have trace background levels of PFAS compounds. Depending on the geographic location of the wastewater facility, and industrial input it receives, sludge may contain these wastes in parts per trillion to part per billion levels. While the type and concentrations of these compounds vary, the presence of these compounds pose a serious challenge for the ultimate disposal of sludges.

Using AirSCWO™, PFAS in sewage sludge and other industrial sources that end up in wastewater can be completely eliminated.

Animal Waste

Industrial Wastes
& Sludges

Food Waste

Landfill Leachate

Markets

  • Municipal
  • Agricultural
  • Defense
  • Food and Beverage
  • Oil & Gas
  • Organic Chemical & Pharmaceutical
  • Waste Management & Remediation

Municipal

Wastewater PFAS Treatment
According to the US EPA, wastewater treatment facilities may introduce PFAS into the environment through effluent discharge to receiving water bodies, land application of biosolids, disposal of residuals and air emissions. While the liquids are treated using traditional sequestering methods, treatment technologies for PFAS in wastewater sludges is not commonplace, until now.

How can PFAS be removed from sludge?
Supercritical Water Oxidation is a simple, proven, method to treat a variety of wet substrates, including wastewater sludges. Supercritical Water Oxidation or SCWO for short, is a physical-thermal process that relies on the unique reactivity and transport properties of water above its critical point of 374 °C and 218 atm. At these conditions, organics are fully soluble in supercritical water, and with the addition of oxygen, all organics rapidly and completely oxidize to form carbon dioxide, clean water, and inorganic salts. At these conditions, any and all recalcitrant compounds in sludge including PFAS, microplastics and pharmaceuticals.

Using AirSCWO™, PFAS in sewage sludge and other industrial sources that end up in wastewater can be completely eliminated.

Agricultural

Defense

Food and Beverage

Oil & Gas

Organic Chemical & Pharmaceutical

Waste Management & Remediation

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