Effective use of ultraviolet in cooling towers eliminates
the need for expensive and hazardous biocides. UV results
in more complete microorganism destruction and yields
very low plate counts in recirculating water, instead
of the surges in microorganism counts with slug feeding
of biocides. UV also decreases maintenance and improves
operator safety. There are no adverse operator health
effects.
Using UV to service a portion of the total header
flow can greatly reduce bacterial levels and hinder
algae growth in the tower basin and wet deck areas.
UV limits the potential for biomass formation in the
condenser loop. With UV, bionutrients in the water are
reduced and, in turn, so are biocide feed and application
requirements, such as priming of feed lines, calibrating
and monitoring of timer feeds, slug dosing, handling
and storage.
UV is well-suited for recirculation loops of many types,
including condenser, closed or semi-closed loops, air
washers and storage tanks. Systems using UV also help
protect cooling tower piping and heat-transfer areas
from corrosion, scale formation and biofouling.
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