These TOC reduction systems by Sterilight are designed specifically for the reduction of total organic carbon (TOC) levels. These systems, based on our successful line of "SUV" disinfection systems are designed with shorter wavelength UV lamps emitting their spectral output at 185 nm. These "shorter" wavelength lamps emit more energy than the standard 254 nm lamps producing hydroxyl free radicals (OH-) which in turn oxidizes most organics into carbon dioxide (CO2) and water (H2O).
These systems are specifically designed for the treatment of ultrapure waters such as those found in the production of semiconductors and other processes requiring water with extremely low levels of total organic carbon. All Sterilight TOC systems produce UV dosages in excess of 120 mJ/cm2 at the end of lamp life.
It should be noted that a suitably designed UV system can lead to extremely low levels of residual TOC in the water supply. Additionally, both TOC reduction and microbial destruction occur with the same 185 nm UV lamp. Since carbon dioxide is a natural by-product of the process, a certain drop in the water's resistivity will occur after the UV. This is caused by an "ionizing charge" some organic elements hold after receiving UV energy. Using a final DI step will restore the waters resistivity and will further reduce the level of these remaining organic elements
In applications where higher or lower UV dosages are required to achieve varying levels of TOC reduction, adjusting the rated flow of the unit can easily achieve these desired results. Please consult the factory for further technical assistance.