A single Severn Trent Frontlinetrademark UV disinfection unit can handle flow rates ranging from 86,000 gpd to 50 mgd.
Click here to enlarge imageThe use of UV disinfection offers advantages in municipal water treatment plants and has been proven to inactivate giardia lambia cysts and cryptosporidium parvum oocysts at specified wavelengths. Other disinfectants, including chlorine, have had difficulty in rendering these parasites harmless. Due to these recent findings, the EPA has proposed the use of UV as a best available technology (BAT) for treating drinking water, removing it from the current category of an emerging technology.
Since UV leaves no residual, another disinfectant must be added to achieve a residual. However, safety concerns surrounding the management and handling of traditional disinfectants such as chlorine are not relevant to the ultraviolet method of disinfection. In addition, there is a low potential for UV disinfection to produce organic disinfection by-products (DBPs). Since no halogens are used in the physical process, there is no need to worry about direct by-products such as THMs (trihaloamines) or HAAs (haloacetic acid).
Designed to meet the demands of the potable water industry, Severn Trent's FrontLine UV systems are constructed with chambers designed to provide highly turbulent water flow, enabling an efficient UV dose. A single unit can handle flow rates ranging from 86,000 gpd to 50 mgd.
FrontLine products are available with options such as UV monitors, transmittance monitors, temperature sensors, wiper systems, and PLC inter-link capabilities. The series is UL certified and built in compliance with ISO 9001 quality standards.