ORTHOS CAN HELP YOU REMOVE PFAS
ORTHOS is here to help your community meet new drinking water standards.
Our advanced solutions effectively remove PFAS, providing safe and clean water.
Trust ORTHOS to deliver the expertise and technology needed to comply with the latest EPA regulations.
ORTHOS’ PFAS removal systems utilize our Poseidon Filtration System® and our resilient Centurion™ monolithic underdrain with either GAC or IX media in gravity contactors and our Type D NoPFAS.us nozzle.
Centurion™ Monolithic Underdrain
The Centurion™ nozzle-based monolithic underdrain delivers to utilities their demands of resiliency, reliability, and permanency with a life cycle cost that cannot be beaten. Our robust, yet flexible, design provides an optimal solution for conventional water treatment, wastewater tertiary filtration, biologically active filtration, GAC adsorption and ion exchange, as well as denitrification.
Orthos has delivered systems and products for GAC and ion exchange media for over 40 years
Two widely used Best Available Technologies to treat PFAS are granular activated carbon (GAC) and ion exchange media.
These granular products are typically utilized post-filtration in contactors.
GRANULAR
ACTIVATED CARBON
ION EXCHANGE RESIN
ORTHOS designs direct retention solutions for all types of granular media; however,
Calgon Carbon’s Filtrasorb 400 is often used in PFAS removal contactors.
ORTHOS’ NoPFAS.us nozzle, specifically constructed for F400 media, delivers the ultimate solution in combination with Centurion™ monolithic underdrains for GAC contactors.
Direct retention, optimally sized screen slots to negate fouling, and superior backwash distribution due to its stem construction are coupled the unparalleled track record of resiliency of the Centurion™ reinforced concrete underdrain, which will last likely a century.
Choose ORTHOS for your next PFAS removal application and help us to continue protecting earth’s most valuable resource—water.
Top 5 Reasons to Choose Centurion™ Monolithic Filter Underdrain
Resilient
In 20 years and with 200 filter installations, Orthos has never had an underdrain failure. The Centurion underdrain is straight-forwardly constructed with Orthos’ GRC form panels set on piers with starter rebar floor anchors. Reinforcing steel, tied on 6” centers and also doweled into the filter wall, is integral to an elevated concrete monolith that becomes part of the civil structure.
Reliable
Nozzles installed on 6” centers provide uniform air/water distribution during backwash and repeatable, effective cleaning with no dead spaces. Low water and energy usage are imparted by long filter runs and reduced operational costs.catastrophic forces many times that of other types of underdrains.
Permanent
Upon construction, our monolithic, reinforced-concrete underdrain becomes part of the filter civil works, likely lasting a century. Plastic block, folded sheet metal, or concrete block underdrain systems can make no such claim as they will likely have to be completely replaced after approximately 25 years.
Life Cycle Cost
The Centurion delivers HUGE life cycle cost benefits: At the end of a filter system’s replacement cycle, (e.g., 25 years), in contrast to ripping out brittle plastic block or corroded folded sheet metal underdrains and starting over, the ORTHOS nozzles are simply replaced, potentially savings millions of dollars. Monolithic will win every life cycle cost analysis with a term that includes at least one replacement cycle, which it should, because utilities operate treatment plants for many, many decades.
Design Flexibility
Our filter underdrains may be any practical size, as they utilize an open plenum that allows for natural, free movement of air and water in all directions, unlike the other systems out there which have length limitations. High-strength polypropylene nozzles with precision-manufactured cage slots are engineered to the specific filter media design and directly retain media, eliminating problematic gravel. Specifically-located and -sized air metering hole(s) on the nozzle tailpipe accurately deliver scour air according to the specific air rate(s). Using the design backwash rate(s), appropriate pressure drop is manufactured into nozzles to properly control backwash distribution by the underdrain, not the media.
What You Need to Know About PFAS
What Are PFAS?
Per- and polyfluoroalkyl substances (PFAS) are a large, complex group of synthetic chemicals that have been used in consumer products around the world since about the 1950s. They are ingredients in various everyday products. For example, PFAS are used to keep food from sticking to packaging or cookware, make clothes and carpets resistant to stains, and create firefighting foam that is more effective.
How Are People Exposed to PFAS?
Human exposure to PFAS is widespread but variable by geography and occupation. PFAS are used in the aerospace, automotive, construction, and electronics industries. Over time, PFAS may leak into the soil, water, and air.
People are most likely exposed to these chemicals by consuming PFAS-contaminated water or food, using products made with PFAS, or breathing air containing PFAS. Because PFAS break down slowly, if at all, people and animals are repeatedly exposed to them, and blood levels of some PFAS can build up over time.
Source: National Institute of Environmental Health Sciences
General Resources on PFAS
- Environmental Protection Agency: Per- and Polyfluoroalkyl Substances (PFAS)PFAS Strategic Roadmap: EPA’s Commitments to Action 2021-2024
- Centers for Disease Control and Prevention Agency for Toxic Substances and Disease Registry: Per- and Polyfluoroalkyl Substances (PFAS) and Your Health
- National Institute of Occupational Safety and Health: PFAS | NIOSH | CDC
- Department of Defense: Per- and Polyfluoroalkyl Substances (PFAS)
- Food & Drug Administration: Per- and Polyfluoroalkyl Substances (PFAS) | FDA
- Interstate Technology and Regulatory Council: PFAS – Per- and Polyfluoroalkyl Substances
- National Academies: Guidance on PFAS Testing and Health Outcomes
Learn more about our filter systems by visiting our Blog Page!
