What
is KDF Resin?
How
is it Used For
Filtering Water?
KDF resin is a limited technology that is
mainly used for chlorine removal. A large amount of the KDF and a long contact
time with the water is needed to do the job. Therefore, this resin is best used
in large commercial applications such as boiler systems although it is also used
effectively in some showerhead filters.
Typically, KDF filters use zinc and copper to
create electrolysis that helps keep bacterial growth down inside the filter.
However, the systems using KDF may have problems with that zinc and copper
leaching into the water they dispense.
KDF filters also tend to clog quickly (around six
months in some cases) and this clogging action is dependent on specific water
chemistry like pH and temperature. Companies using KDF recommend to backwash the
filters (use hot water to dislodge trapped contaminants) but this method wastes
many gallons of hot water, and has no way to prevent dislodged pollution from
continuing out with the supposedly purified water.
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