Regenerative Media Filtration

The major concern of aquatics facilities is the health and safety of the bathers. As more facilities add aquatic play features, the incidences of recreational water illness outbreaks are more apparent. Protection from water-borne illnesses–such as Cryptosporidium–is a major concern. Research at the University of North Carolina-Charlotte concluded that it would take seven days for a chemically loaded sand filter to remove the crypto to “safe levels” versus a single pass (2-8 hours) for a pre-coated filter. This study alone suggests that the utilization of DE or alternative media provides another means of protection from recreational water illnesses. This does not eliminate the need for chemical sanitization processes, through either chlorine, bromine, UV or ozone or a combination of these for bather protection.

Space-Saving Advantage

RMF requires less space in the filter room, approximately one-fourth the space of a conventional sand filter, and eliminates the need for a backwash holding tank. As facilities age, the need for traditional filtration retrofits require removal of existing filter tanks and, in some cases, new systems cannot be replaced due to filter-room housings. Construction benefits in new facilities also allow for a smaller backwash line to the sanitary sewer, and eliminate the need for a backwash holding tank.

Energy Efficiency

Electricity usage and costs are major concerns of facility operators. RMF operates at a lower total dynamic head, which may result in a lower horsepower motor, thus saving energy to drive the pool pump motor and a reduction in carbon footprint. Filtration, circulation and chemical treatment all are vital to the water quality of the aquatics facility.

As the aquatics industry moves toward embracing more green initiatives, the benefits of removing smaller particulate matter and turbidity control through RMF will evolve. The technology is also enhancing water quality with environmental advantages, such as water conservation and wastewater reduction, in chemical costs as well as energy and fuel savings.

Connie Sue Centrella is a professor and Program Director for the online Aquatic Engineering Program at Keiser University eCampus. She was twice-honored with the Evelyn C. Keiser Teaching Excellence Award “Instructor of Distinction.” Centrella is an industry veteran with over 40 years experience in the pool and spa industry. She is a former pool builder with extensive knowledge in pool construction and equipment installation as well as manufacturing.

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