Wedeco Spektron 2000e and 4000e ultraviolet disinfection systems from Xylem, designed for industrial and municipal drinking water sites with flow rates higher than 13 mgd (2,000 meters cubed per hour), provide inactivation of 4-log (99.99 percent) for chlorine-resistant pathogens, including Cryptosporidium and Giardia.“The monochromatic lamps emit UV light at a wavelength of 254 nanometers, which is highly effective for the inactivation of pathogens,” says Tanja Burgschwaiger, Wedeco UV systems product manager for Xylem. “Used in combination with the variable-power option, the lamps provide energy efficiency under all operating conditions. In dimmed mode, they realize an average savings of 20 percent
