Onsite PFAS Removal with Ozone Foam Fractionation (FF)
BREAK FREE FROM PFAS™
Olift™, Ovivo’s Continuous Foam Fractionation process, featuring Evocra’s patented technology, provides cost-effective and sustainable onsite per- and polyfluoroalkyl substances (PFAS) treatment solutions for municipalities and for industries throughout the United States and Canada.
Olift™ selectively uses both ozone and air to create smaller bubbles with higher overall surface area and higher electrostatic charge compared to air-only systems, significantly boosting PFAS removal and concentration factors.
Ozone and/or air bubbles are introduced to a PFAS-laden water stream inside specially designed columns. Each PFAS molecule has a hydrophilic, or water-loving, head and a hydrophobic, or water-repelling, tail. Because of these properties, the PFAS molecules will align at the large ozone-enhanced gas-water interface at the bubble surface.
These small bubbles, along with the PFAS, rise to the water surface and form a concentrated foam, or foamate, at the top of a column, leaving relatively PFAS-free retentate (up to 99% removal of targeted PFAS). The foamate is separated and collapsed, and can be sent for more economical destruction. The small volume of foamate enriched with PFAS is generally between 1% and 10% of the influent treated, significantly reducing the size and energy requirements of Obreak™, Ovivo’s Electro-Oxidation (EO) process for onsite PFAS destruction.
Integrated PFAS Destruction Solutions for Municipalities and Industries
The common treatment approaches for removing PFAS from water are separation using reverse osmosis or adsorption using a media (for example, granular activated carbon, ion exchange resin). But in all these cases, the PFAS is simply separated from the water, leaving the possibility of PFAS being re-released into the environment. Moreover, these processes are costly.
Utilities or industry must consider where the PFAS will end up. The ultimate disposal and destruction of the captured PFAS must be considered, and onsite PFAS destruction offers operators greater confidence with the lowest exposure.
Olift™, Ovivo’s Continuous Foam Fractionation process, can be added to most flow sheets for PFAS removal. Pairing with Ovivo’s Electro-Oxidation Obreak™ process makes for a complete onsite destruction solution. Our team of engineers and field technicians are ready to assist customers in developing the ideal treatment approach to rid PFAS from their waste streams and water supplies while reducing liabilities associated with the generation of solid waste.
The Olift™ Continuous Foam Fractionation process distinguishes itself from other air-only-based foam fractionation unit operations:
The use of Ozone (O₃) in select columns produces smaller bubbles with more surface area than air (micro-bubbles vs millimeter sized bubbles).
