Case Study

Cryptosporidium Removal From Commercial Swimming Pools

By Wateropolis Corp.

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A year long pilot study was performed at an indoor commercial pool in Geauga County Ohio. The testing included an extensive evaluation of common and widely available granular filtration medias and compared the performance results in real time. The intent of the study was firstly to compare the real time turbidity removal capabilities of the various medias and secondly assess the removal ability of cryptosporidium sized particulate (2-5 micron). This assessment also included a polystyrene microsphere challenge on selected well-seasoned medias to compare the ability of the medias to remove crypto sized particles.

The pilot assembly utilized two, 2” diameter clear acrylic filter columns. One column contained a 0.15 – 0.25 mm spherical ceramic filter media, various other filter medias were installed in the second column and each media was run for extended periods. Column effluent was measured in real time for 2 – 5 micron sized particles (HACH 2200 PCX), and turbidity was also measured and recorded in real time (GLI Accu4).

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