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2007
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--Select 2007 News--
12-14.Cleveland Miss. Water System Scores Second Consec
11-16.Cities of Bristol Tennessee and Bristol Virgini
11-14.Thomas M. Mills Severn Trent Services Marketing a
11-12.Severn Trent Water International Ltd Reorganizes C
10-31.STS Provides Reverse Osmosis Electrodeionization S
10-29.Severn Trent De Nora Receives U.S. Patent for its
10-11.Severn Trent Services Introduces Intelligent Gas F
10-10.Keeping the Water Flowing at Catterick
10-2.Severn Trent Introduces Standardized ClorTec On Si
9-27.Tampa Bay World s Largest Denitrification Plant
8-28.Reverse Osmosis Selected for New Treatment Facilit
8-27.SmartMeter Water Meters Shown to Prevent Water Re
8-23.Severn Trent Services Introduces New Battery for S
8-21.TETRA DeepBed Filtration Technology Wins Earle B
8-14.New Trial Package for SmartMeter C100R Concentric
7-18.STS to Provide 46 ClorTec On site Sodium Hypochlo
7-11.STS UV Disinfection System Receives Validation Tes
6-26.New Branch Office in Abu Dhabi United Arab Emirat
6-21.STS Provides Arsenic Removal Technology for City o
6-13.OMNIPURE and MARINER OMNIPURE Product Lines Rece
6-12.New Mini Chlorine Dioxide Unit an Ideal Solution f
6-11.Gary Moyer to Assist Severn Trent Management Servi
6-8.Standardized Dry Chlorine Emergency Scrubber Featu
6-6.Severn Trent Services Acquires the Business of Qua
6-6.Firma Severn Trent Services przejmuje firme Quay T
6-1.STS Awarded Contract to Supply Filters for Queensl
5-29.STL Launch New Rapid Detection Legionella Method
5-29.Severn Trent Laboratories Midlands Laboratory Rec
5-29.STL Join Institute of Customer Services
5-4.Severn Trent Metering Services Seek European Distr
4-13.Severn Trent Services Launches New Web Site
3-30.U.K. Water Utility Selects Severn Trent Services t
3-20.Severn Trent Services Selected to Provide Tertiary
3-13.Severn Trent De Nora Launches New Web Site
3-2.Severn Trent Services Receives Texas Water Utiliti
2-22.STWI Guyana Statement
2-9.SmartMeter Water Meters Receive Measuring Instrum
1-30.City of La Vergne Tennessee Partners with Severn T
1-17.Severn Trent Management Services Opens New Office
1-15.Severn Trent De Nora Introduces Compact MARINER OM
1-12.Severn Trent Services Introduces A Flex Capital Le
1-2.Severn Trent Services Receives U.S. Patent for its
STS UV Disinfection System Receives Validation Test Certification
Wednesday, July 11, 2007
http://www.severntrentservices.com/Disinfection/Ultraviolet_Disinfection_prod_30.aspx
STS-UV-Disinfection-System-Receives-Validation-Test-Certification.pdf
Severn Trent Services’ UltraDynamics® 8102-HO-200
ultraviolet (UV) disinfection system
has received validation test certification that conforms to the protocols prescribed by the U.S. EPA’s Ultraviolet Disinfection Guidance Manual (UVDGM). The UVDGM provides technical guidance on the application of ultraviolet light for the disinfection of drinking water by public water systems.
The 8102-HO-200 UV system provides an ultraviolet dose of 30,000 to 40,000 micro-watt seconds per square centimeter at a wavelength of 254nm ultraviolet energy for the deactivation of microorganisms. After validation testing, the .8 million gallon per day 8102-HO-200 UV system was installed at the Leslie Water Treatment Plant, Northeast, Maryland. It is expected to be fully operational later this year.
UV light is proven to be an effective method for inactivating waterborne pathogens and viruses, including
Giardia Lambia
cysts and
Cryptosporidium
Parvum
oocysts. Moreover, UV does not pose the handling safety concerns of traditional disinfectants such as chlorine.
The test plan for the validation was written by HydroQual, Inc. which also conducted all testing and prepared the final validation report.
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