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 (Left) A Clearadon installed with storage to service a small school. The system treats water at 7 gpm and
can handle peak flows of up to 15 gpm. This type of system provides a very cost effective alternative to large
systems with no storage. The water is gravity fed to the storage tanks on the right to save re-pumping. The storage
tanks not only hold the water required for peak demands but also provide retention for disinfection. The retention
for disinfection is accomplished by feeding the treated water to the bottom of the tanks and then discharging at
an elevation above the bottom that provides the necessary retention time (see
bottom left). |
 (Right) The Chemtech
solution feed pump used for the feeding of hypochlorite is tied into the
Clearadon control box. This assures that the operation of the solution feed pump is matched to the run time of
the Clearadon and therefore the amount of water used. Note the labels on the by-pass valves, sample port installation,
equipment manuals, GFI outlet for service equipment, and cartridge pre-filter (to protect solenoids). We try to
take care of details that not only keep the system running but make service efficient, safe and cost effective.
(Bottom) As mentioned above, the treated water is actually fed to the bottom of the tanks.
The outlet is the upper connection. This gives a retention time equal to the fill time of the volume of the water
between connections. |
 The
storage tanks are also fitted with a low water float to prevent damage to the repressurization pump. The float
is connected to a circuit that turns the repressurization pump off should the level of the water in the tanks drop
below the outlet. This low water protection circuit has been designed to automatically reset when the tanks refill
to a safe level. |
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Copyright 2000, Air & Water Quality, Inc.
Maine's Water Experts
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