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New light shed on UV systems: studies show medium-pressure UV kills RWIs more effectively than low pressure.(RESEARCH)
Recent research has shown that medium-pressure ultraviolet lights may be superior at eradicating recreational water illnesses.
The studies--two published in Applied & Environmental Microbiology and one in Water Science and Technology: Water Supply--showed that E. coli damaged by low-pressure UV can repair itself when exposed to light, a process known as photoreactivation. E. coli DNA exposed to medium-pressure UV under laboratory conditions showed little to no repair.
In addition, the deactivated bacteria may cause growth of new bacteria. According to a study by the Civil Engineering Department of the National University of Singapore, "disinfection byproducts produced by UV disinfection ... may serve as a carbon source in finished water, resulting in regrowth of the bacteria."
UV disinfection has become popular in indoor facilities to reduce chloramines and kill viruses and bacteria such as cryptosporidium, which takes nearly a ...
- UV Systems Plc.
- Magazine article from: Food Trade Review February 1, 2000 700+ words
...tel:0123 482 6233, and UV Systems, tel:0178 737 6259, will...their 'high care' area, UV Systems, who specialize in low pressure UV equipment, provided a full...preventing it from replicating. A UV Systems' Conveyor Disinfection System...
- Bugs killed by medium pressure UV stay dead.(plant)
- Magazine article from: Food Trade Review May 1, 2003 700+ words
...repair following exposure to UV from low pressure UV lamps, but virtually none following...cells' DNA repair mechanisms. Low pressure UV lamps, on the other hand, produce...serious consequences for operators of low pressure UV disinfection systems. If, following...
- Cryptosporidium Inactivation by Low-Pressure UV in a Water Disinfection...
- Magazine article from: Journal of Environmental Health Drescher, A.C. Greene, D.M. Gadgil, A.J. October 1, 2001 700+ words
...authors conclude that exposure to low-pressure UV at 120 mJ/[cm.sup.2] effectively...Cryptosporidium Inactivation by Low-Pressure UV in a Water Disinfection Device," is...report new results showing that low-pressure UV can be highly effective at inactivating...
- Wedeco Acquires UV Systems.(Brief Article)
- Magazine article from: Food Trade Review June 1, 2000 700+ words
...ultraviolet light, have acquired 100% of the shares of UV Systems Plc, UK. UV Systems are active in the field on industrial and residential...Both businesses will join under the name Wedeco UV Systems Ltd and operate out of Manchester, tel:0161...
- Miltec will rep Aetek UV Systems in U.S.: UV and infrared...
- Magazine article from: Official Board Markets December 27, 2003 700+ words
Aetek UV Systems, Romeoville, Ill., names Miltec...infrared products. "The addition of Aetek UV Systems products to the Miltec lineup ensures...Blandford, Miltec vice president. Aetek UV Systems is a wholly owned subsidiary of American...
- Aetek UV Systems enhances curing system.(suppliers Corner)
- Magazine article from: Ink World March 1, 2004 700+ words
Aetek UV Systems has added features to its UVXL universal...efficiency, according to the company. Aetek UV systems find application in label, folding...printing and coating. More info: Aetek UV Systems, (630) 226-4200; fax: (630...
- Nordson UV Systems earns ISO certification.(Business & Industry)
- Magazine article from: JCT CoatingsTech April 1, 2007 700+ words
...Amherst, OH, has announced that its UV systems business has earned the ISO 14001...The certification of Nordson UV Systems was conducted by third party agency...Norske Veritas (DNV). Nordson UV Systems is a provider of ultraviolet curing...
- QurTech SA distributes for Fusion UV Systems in Southern Europe.(COMPANY news)
- Magazine article from: Paint & Coatings Industry December 1, 2005 700+ words
...GAITHERSBURG, Md., -- Fusion UV Systems, Inc., has appointed QurTech SA as the exclusive distributor for its UV systems and components in France, Italy...Harbourne, president of Fusion UV Systems, Inc., and Oscar Della Schiava...
Source: HighBeam Research, New light shed on UV systems: studies show medium-pressure UV kills...