The client first reached out to us in late 2024, seeking a solution to treat collected water at one of their operational sites. Water analysis revealed elevated levels of zinc and PFAS11, exceeding municipal guidelines for stormwater discharge. This resulted in a mandate to manage the contaminated water on-site.

Following a site visit, we conducted testing and analysis to determine the most effective treatment approach. Water samples were taken from existing sedimentation containers within the area, and we worked closely with the client to design a treatment system capable of handling both the water stored in the tanks and newly collected runoff from the site.

The delivered treatment solution

The treatment system combines advanced treatment technologies to effectively remove both zinc and PFAS. It includes a collection tank, a flocculation tank with pH adjustment, a sedimentation container, and a series of pressurized activated carbon filters designed specifically to eliminate PFAS11 from the water. The treated water is recirculated through particle filters and BioMedia® filters, further reducing zinc levels and residual floc, while also protecting downstream filtration units.

Flow-proportional sampling ensures efficient process control and minimizes the risk of mishandling treated water. It also enables continuous monitoring to ensure compliance with all environmental regulations. Additional sampling points between filter stages are used to track breakthrough times and optimize performance.

The delivered system is both flexible and robust, with the capacity to be quickly scaled up if required. Testing has confirmed that it effectively treats PFAS, and the setup allows for additional filter units to be added in the future, should new demands arise.

It has been in operation for a few weeks and is already showing promising results. The project will run for at least six months.