Comparison of Low and Medium Pressure UV
DESTRUCTION OF PATHOGENS (Bacteria, Viruses, Protozoan Cysts):
Both Conventional (low pressure) and Medium pressure UV will assist chlorine in disinfection including the destruction of all bacteria, viruses and protozoan cysts on a single pass.
DESTRUCTION OF CHLORAMINES:
Monochloramine (NH2Cl), Dichloramine (NHCl2), and Nitrogen Trichloride (NCl3) are the products of nitrogen introduction from bather waste forming ammonia (NH3) and reacting with chlorine. These, when combined with chlorine are the complex contaminants responsible for eye burn, disagreeable odor, poor oxidation, and a host of other problems in the swimming pool water. This is a “progressive” compound, which means mono-chloramine forms before it can form di-chloramine or tri-chloramine.
Low Pressure UV (green area) destroys all organics including mono-chloramine. The destruction of mono-chloramine prevents the formation of additional forms of chloramine.
Medium Pressure (Blue area) destroys all organics and all compounds of “chloramine”.
DESTRUCTION OF HYPOCHLOROUS ACID (Active “free chlorine”):
Low Pressure UV does not destroy the active free chlorine we need for oxidation and disinfection.
Medium Pressure UV will destroy up to 30% of all free chlorine as it passes through the chamber.
ALL LOW PRESSURE UV LAMPS ARE NOT THE SAME:
Not all low pressure lamps are “Amalgam” lamps. Amalgam lamps provide a higher intensity of UV light over conventional UV, providing additional power to destroy organics.
Medium-pressure UV lamps require over 3 times the electrical power than low-pressure lamps.
LIFE OF THE UV LAMPS:
Low-pressure lamps last three (3) times longer than medium-pressure lamps.