Direct PFAS Removal from Raw, Untreated Leachate

"An innovative solution for the removal of PFAS in complex waste streams"


Per- and poly-fluoroalkyl substances (PFAS) have gained a lot of attention recently and there are many groups and agencies working hard to fully understand the science behind the compounds, impacts to the environment and public health, how widespread they are, and the best management strategies to remove them.  As USEPA continues with its roadmap, state and local agencies are driving their regulations forward, with some limits much stricter than the current federal health advisory level of 70 ppt.

Because many PFAS-containing materials end up in landfills, solid waste companies need to figure out how they plan to start removing PFAS from their leachate or face the risk of being cut off by their WWTPs.  Without proper removal or destruction, PFAS pass through conventional treatment processes and enter the environment.

WWTPs do not want to have that extra burden of handling elevated levels of PFAS in their wastewater, so they WILL CUT OFF A LANDFILL and not allow leachate from entering their facility.  This could happen suddenly and without much notice, leaving the landfill managers scrambling for alternative options.

In fact, this scenario is already becoming reality for landfills in some states, and it will only become more common in the next couple of years.

Our Solution

LMS has partnered with The Water and Carbon Group (WCG) to offer its foam fractionation process called The LEEF System® as a low-energy PFAS extraction and volume reduction system.  Based in Australia, WCG developed the LEEF System® to treat highly contaminated wastewater such as landfill leachate or brine streams from industrial or mining activities.  A key feature is that pre-treatment is typically not required for direct PFAS removal.

The technology combines a proprietary multiple step foam fractionation and enclosed solar distilling system to deliver a unique and proven PFAS solution centered around harnessing air, gravity, and the sun.

The system has been engineered to sharply reduce high energy consumption and large waste streams that plague existing systems while utilizing renewable and naturally occurring resources.  Throughout the process, zero chemicals or consumables are used, resulting in a simple to operate, low maintenance system.  Using a modular design, the system can be easily scaled to meet any volume requirements.


The system removes up to 100% of targeted PFAS compounds to below the analytical limits of detection within a short operating time.  Less than 1% waste stream consistently generated, with further reductions possible using solar distillation.

Substantial flexibility and advantages are designed into the LEEF System® to allow for customization of operation at sites with different leachate characteristics. We understand that not every wastewater is the same and a treatment system needs to meet site-specific challenges. The modular system can be assembled to treat any volume from 5,000 gpd to 500,000+ gpd. A full-scale LEEF System® is already in operation in the City of Darwin in Australia which treats 36,000 gpd.

In 2022, LMS and WCG started demonstrating the technology at landfills in the United States and have already treated NINE diverse leachates, including reverse osmosis concentrates.  Check out two of the removal charts below and visit our LEEF WEBSITE for more information.

The LEEF System® Benefits:

• Direct PFAS Removal Without Pre- treatment
• Removal to Limit of Detection
• Flow Rates 7,500 gpd to 250,000 gpd
• Below 1% Waste Stream
• Multiple Treatment Capacities
• Multiple Project Delivery Methods
• Low Energy & Operational Requirements
• Easily Scalable & Modular