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UV SterilizersUV radiation can be used as a pretreatment or polishing step to destroy bacteria and to reduce total organics. Low pressure mercury discharge lamps are used to generate the UV energy, emitted at either 254 or 185 nm. The UV energy emitted at 254 nm is used as a non-chemical method for destroying microorganisms by altering the genetic material, and rendering them unable to reproduce. The shorter, and therefore more powerful 185 nm energy is used for the effective reduction of organics, commonly referred to as TOC (total oxidizable carbon).
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