PFAS (Per- and Polyfluoroalkyl Substances) are persistent environmental contaminants found in water, soil, and landfill leachate worldwide. Ozone Technologies combines advanced ozone oxidation with foam fractionation to deliver superior PFAS removal rates of up to 99.99%. By injecting ozone into the foam fractionation process, we break down PFAS molecular bonds while simultaneously exploiting the surfactant-like properties of PFAS compounds to separate them from the water. This ozone-enhanced approach concentrates PFAS into a fraction of the original volume, dramatically reducing waste and treatment costs.
Foam Fractionation Column
PFAS Monitoring
Containerised Solutions
How Ozone-Enhanced Foam Fractionation Works
Our process combines two powerful technologies: ozone oxidation and foam fractionation. Ozone gas and precisely calibrated fine air bubbles are injected into the contaminated water or leachate. The ozone actively breaks down PFAS molecular chains through advanced oxidation, while the remaining PFAS molecules — which have a high affinity for air-water interfaces — adsorb to the rising bubbles. As the bubbles reach the surface, they form a PFAS-enriched foam layer (foamate) that is continuously skimmed off and collected. The ozone component significantly enhances destruction of long-chain PFAS compounds, meaning less concentrated waste requires disposal. The result is a dramatic volume reduction, concentrating residuals to as little as 1/10,000th of the original influent flow.
Water Treatment Applications
Our ozone-enhanced foam fractionation systems are designed for treating PFAS-contaminated groundwater, surface water, and drinking water sources. Whether dealing with legacy contamination from firefighting foams (AFFF), industrial discharge, or diffuse sources, our systems deliver reliable PFAS removal to meet increasingly stringent regulatory limits. The ozone oxidation stage is particularly effective at breaking down long-chain PFAS compounds (PFOA, PFOS), while foam fractionation captures the remaining shorter-chain compounds for comprehensive treatment.
Landfill Leachate Treatment
Landfill leachate is one of the most challenging PFAS-contaminated waste streams, with complex chemistry and high contaminant variability. Traditional filtration methods like granular activated carbon (GAC) simply transfer PFAS from water to solid media, creating secondary waste. Our ozone-enhanced foam fractionation systems address this by both destroying and concentrating PFAS into a tiny fraction of the original volume, dramatically reducing disposal costs. The ozone pre-treatment also helps break down other organic contaminants in the leachate, improving overall treatment performance.
System Design & Integration
Our PFAS treatment systems are available in skid-mounted, containerised, and mobile configurations to suit any site requirement. Each system integrates ozone generation (with PSA oxygen feed) and foam fractionation columns into a single treatment unit. Systems can be designed as standalone treatment units or integrated into existing water treatment trains as a targeted PFAS removal stage. Full SCADA monitoring and data logging provide real-time visibility of ozone dosing, treatment performance, and foam collection. Every system is engineered to meet site-specific PFAS concentration targets and regulatory requirements.
Key Benefits
Related to pfas treatment
Tightly related pages from our knowledge base — useful if you're scoping a system or comparing options.
- Our nationwide ozone water treatment serviceWhat ozone is, what we treat, how we design and support systems across NZ.
- High-capacity industrial ozone systemsHigh-capacity, continuous-duty systems for municipal and large industrial use.
- Council-grade drinking water ozone systemsDWSNZ / Taumata Arowai compliance for council drinking-water supplies.
- On-site PSA oxygen generationOn-site oxygen generation feeding ozone, medical, aquaculture and industrial users.