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Real-Time UV Dosimetry Ensures System Performance And Water Quality
June 12, 2009
•Article: Real-Time UV Dosimetry Ensures System Performance And Water Quality
By UV Sciences
The requirements for water disinfection for almost every use of water today are becoming more stringent. There is also more pressure to demonstrate that any disinfection process used is providing adequate disinfection at all times and under all conditions.
Microbiological grab sampling has historically been the standard for verifying disinfection performance in many water industries. This provides some confidence that proper disinfection is provided overall, but will not always catch a short term, transient event (a "spike" in a particular bacteria, for example). Also, even if a problem is caught, the samples may not be processed for hours, or worse, days after the sample is taken, leaving the system at risk during that time.
Ultraviolet Sciences, Inc. (UVSI) has designed a UV Intensity Monitor (UVIM) for its water treatment products that delivers continuous, real-time UV intensity readings, not reference levels normalized to an arbitrary lamp run-time. Continuous intensity readings remove uncertainty and ambiguity that is typical with UV systems today.
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