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2. Ultraviolet germicidal irradiation - Wikipedia

   en.wikipedia.org/wiki/Ultraviolet_germicidal...

   A portable, battery-powered, low-pressure mercury-vapour discharge lamp for water sterilization Cutaway model of UV disinfection unit used in water treatment plants. Ultraviolet disinfection of water is a purely physical, chemical-free process.

3. Portable water purification - Wikipedia

   en.wikipedia.org/wiki/Portable_water_purification

   [29] [30] Studies have shown that UV doses at the levels provided by common portable UV units are effective at killing Giardia [31] and that there was no evidence of repair and reactivation of the cysts. [32] Water treated with UV still has the microbes present in the water, only with their means for reproduction turned "off".

4. Catskill-Delaware Water Ultraviolet Disinfection Facility

   en.wikipedia.org/wiki/Catskill-Delaware_Water...

   The UV facility treats water delivered by two of the city's aqueduct systems, the Catskill Aqueduct and the Delaware Aqueduct, via the Kensico Reservoir. [3] (The city's third supply system, the New Croton Aqueduct, has a separate treatment plant. [4]) The plant has 56 energy-efficient UV reactors, and cost the city $1.6 billion.

5. Aerobic treatment system - Wikipedia

   en.wikipedia.org/wiki/Aerobic_treatment_system

   Another option is UV disinfection, where the water is exposed to UV light inside of a UV disinfection unit. The disinfecting stage is optional, and is used where a sterile effluent is required, such as cases where the effluent is distributed above ground.

6. Water purification - Wikipedia

   en.wikipedia.org/wiki/Water_purification

   Ultraviolet light (UV) is very effective at inactivating cysts, in low turbidity water. UV light's disinfection effectiveness decreases as turbidity increases, a result of the absorption, scattering, and shadowing caused by the suspended solids. The main disadvantage to the use of UV radiation is that, like ozone treatment, it leaves no ...

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8. Industrial water treatment - Wikipedia

   en.wikipedia.org/wiki/Industrial_water_treatment

   Ultraviolet (UV) disinfection technology has been a common water treatment technology in the past two decades due to its ability to provide disinfected water without the use of harmful chemicals. The UV-C portion represents wavelengths from 200 nm - 280 nm which is used for disinfection.

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