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The
Aqua
Rain®
system
filters water in a very natural way using gravity to
gently draw water down through our "cultured" ceramic
stone in much the same manner as nature processes ground
water through the earth.
The microfine pore structure of our ceramic media
will remove dangerous organisms
such as protozoan cysts (Cryptosporidium, Giardia
lamblia) and microscopic bacteria (E. coli,
Salmonella typhimurium, etc...). Enclosed within the
hard ceramic shell we have incorporated a concentrated
bed of Granulated Activated Carbon (GAC) that contains a
self-sterilizing metallic silver. The high performance
silvered GAC bed will adsorb
various organic chemicals such as MTBE and pesticides,
remove chlorine compounds including carcinogenic
halogens, and improve the taste and odor of the water.
To the benefit of
good health, our system will also leave unchanged the
naturally occurring electrolytes and minerals found in
your water.
How
Ceramics Work...
Ceramic
water filters work in three ways. First, surface
sieving, much like a screen door, does not allow larger
particles to pass through the outer surface of the
filter. Second, ceramic filters operate as a depth
media, providing a twisting, tortuous path like a maze,
trapping contaminants within the walls (usually in the
top .005" below the surface). Third, surface charge or
adhesion, whereby contaminants that are small enough to
penetrate the walls of the ceramic may cling to the
walls like opposite polarity magnets attract each other.
This surface charge is often greater than the force of
the water flow that might otherwise dislodge the
contaminant. This is particularly true with gravity or
siphon-fed ceramic applications.
Wall
thickness is particularly important with regard to a
ceramic’s performance as a depth media. The maze-like,
tortuous path allows for filtration performance at an
effective pore size that is much less than the actual
median pore diameter of the diatomes from which the
filter is made. As clogged filters are cleaned to
restore flow, contaminants in the top .005" of surface
material are removed. Gentle abrasive cleaning will
gradually reduce wall thickness, making a reliable
end-of-life indicator or gauge absolutely essential for
easy determination of expended ceramics.
The
above information was taken directly from the Aqua Rain
Manufacturer. |
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