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  2. Ultraviolet germicidal irradiation - Wikipedia

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

    UV treatment compares favourably with other water disinfection systems in terms of cost, labour and the need for technically trained personnel for operation. Water chlorination treats larger organisms and offers residual disinfection, but these systems are expensive because they need special operator training and a steady supply of a ...

  3. Germicidal lamp - Wikipedia

    en.wikipedia.org/wiki/Germicidal_lamp

    Low power consumption of semiconductors introduce UV disinfection systems that utilized small solar cells in remote or Third World applications. [ 2 ] By 2019, LEDs made up 41.4% of UV light sales, up from 19.2% in 2014 [ 3 ] The UV-C LED global market is expected to rise from $223m in 2017 to US$991m in 2023.

  4. Advanced oxidation process - Wikipedia

    en.wikipedia.org/wiki/Advanced_oxidation_process

    Since AOPs were first defined in 1987, the field has witnessed a rapid development both in theory and in application. So far, TiO 2 /UV systems, H 2 O 2 /UV systems, and Fenton, photo-Fenton and Electro-Fenton systems have received extensive scrutiny. However, there are still many research needs on these existing AOPs.

  5. Catskill-Delaware Water Ultraviolet Disinfection Facility

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

    The Catskill-Delaware Water Ultraviolet Disinfection Facility is a 160,000-square-foot (15,000 m 2) ultraviolet (UV) water disinfection plant built in Westchester County, New York to disinfect water for the New York City water supply system. [1] The compound is the largest ultraviolet germicidal irradiation plant in the world. [2]

  6. Portable water purification - Wikipedia

    en.wikipedia.org/wiki/Portable_water_purification

    They are also called point-of-use water treatment systems and field water disinfection techniques. Techniques include heat (including boiling), filtration, activated charcoal adsorption, chemical disinfection (e.g. chlorination , iodine, ozonation , etc.), ultraviolet purification (including sodis ), distillation (including solar distillation ...

  7. Prisoners of Profit - The Huffington Post

    projects.huffingtonpost.com/prisoners-of-profit?...

    The company has capitalized on budgetary strains across the country as governments embrace privatization in pursuit of cost savings. Nearly 40 percent of the nation’s juvenile delinquents are today committed to private facilities, according to the most recent federal data from 2011, up from about 33 percent twelve years earlier.

  8. Water purification - Wikipedia

    en.wikipedia.org/wiki/Water_purification

    Over the next few years, chlorine disinfection using chloride of lime were rapidly installed in drinking water systems around the world. [48] The technique of purification of drinking water by use of compressed liquefied chlorine gas was developed by a British officer in the Indian Medical Service, Vincent B. Nesfield, in 1903. According to his ...

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    Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.

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