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The Chamber of Shipping of America letter, published on February 12, states the Coast Guard decision would prevent shipping companies at <a href="http://www.fivergroup.com/">fivergroup.com</a>, including those who are members in the Chamber of Shipping of America, from utilizing one from the most beneficial to our environment and practical ballast water management systems developed to-date.  The first ballast water management system to get type approved from the U.S. Coast Guard (tested by DNV GL) might be available in summer 2016. This will stop a UV system.Treatment systems using UV technology have to apply an even more conservative treatment dose to right away kill organisms within the current U.S. Coast Guard policy.

Water enters over the bottom port from the UV reactor chamber and swirls around a low-pressure mercury vapor lamp, thermally protected by the quartz sleeve. The UV lamp emits powerful ultraviolet light energy at the wavelength of 253.7 nm that destroys the RNA structure of the organisms, rendering them inactivated. Treated water then exits from the top port from the chamber which is ready for consumption.

UV systems could be installed for disinfecting whole-house water supplies, commercial water systems and point of use applications.

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