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HOW TO REPLACE MEDIA IN A
BACKWASHING FILTER
GENERAL INFORMATION
Point-‐of-‐entry (POE) water treatment appliances are designed to treat water as it
enters a building or a home. Unlike point-‐of-‐use (POU) filters that treat small
amounts (up to 1 gallon per minute) of water for drinking purposes, POE appliances
are usually installed on ¾” or larger water lines and treat all the water (flows of 6 to
10 gallons per minute or more) after it enters the building.
The purpose of the treatment determines the type of equipment. Hardness is
often controlled by water softeners that use a resin to remove calcium and
magnesium ions. These resins must be regenerated with salt from a separate brine
tank and backwashed. Carbons are used to remove a variety of contaminants like
volatile organic chemicals that can cause off-‐tastes and odors. Specialty carbons are
used to remove more difficult to remove contaminants like chloramines, MTBE,
hormone disruptors, etc. A variety of specialty resins are used to remove color
caused by tannins. Still other media are used to remove excess inorganic
contaminants like hydrogen sulfide (rotten-‐egg odor), iron and manganese that
cause red and/or black staining, or treat water to prevent corrosion.
Содержание AuaRinse LWMMF10
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