Removal of Cryptosporidium oocysts from drinking
water is essential because of their potential to
cause waterborne disease outbreaks. Removal is challenging,
however, because of their prevalence in natural
waters and resistance to chlorine disinfection.
Detection of Cryptosporidium in drinking water samples
is expensive, slow, and frequently unreliable. This
research used different-colored polystyrene microspheres
to compare the performance of conventional
and biological filters in removing Cryptosporidium
oocysts. Whereas previous studies focused on the
steady-state portion of the filter run, this work looked
at removals during and immediately following filter
ripening. Includes 34 references, tables, figures.