Ultraviolet light (UV) is a recognized disinfection alternative to chlorine and ozone in many applications from drinking water to wastewater treatment. UV provides effective disinfection without production of problematic disinfection byproducts. Information on the mechanism and application of UV for drinking water disinfection is presented. Advantages and disadvantages of the technique are discussed with a view towards comparison with chemical disinfection. Practical information regarding UV system design, operation, and maintenance as well as capital, operating, and maintenance costs are indicated for a range of disinfection strategies.
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