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A filtration and disinfection system was needed to improve the
water, and CWS was chosen to design and install it. The water
is first passed through twin automatic sediment filters, removing
most of the sediment and turbidity. Next, the water passes through
5 micron absolute cartridge filters, followed by 0.35 micron filtration,
for Giardia and cryptosporidium. Finally, it is sterilized with
twin 22 gpm Ultraviolet
sterilizers. With this robust system, the water can be filtered
and sterilized at a rate of up to 40 - 45 gallons per minute with
little pressure drop. When pressure loss is realized, the filters
are changed or cleaned. Repeated bacteria tests after the systems
reveal no coliform organisms detected. |
