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D.E.
Filters
Diatomaceous earth is a porous
powder with microscopic openings, that, when magnified, look like tiny
sponges. Clear water can pass through these openings, but particles, as
small as one to three microns, are trapped during the first pass through
the media. D.E. filters have internal elements that become coated with
D.E. It is this 'filter cake' that strains dirt, dust, algae, and some
forms of bacteria from the water.
Similar to sand filters, when D.E. filters become dirty, they are cleaned
either by backwashing, or regenerating and draining the clogged D.E. to
the 'waste' line. To restore filtration, a fresh 'charge' of D.E. is added
to the filter. For sparkling, clean pools; step up to Hayward D.E.
filters. |