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Using UV light for disinfection of drinking water dates back to 1910 in Marseille, France. [66] The prototype plant was shut down after a short time due to poor reliability. In 1955, UV water treatment systems were applied in Austria and Switzerland; by
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.
In wastewater treatment, a disinfection step with chlorine, ultra-violet (UV) radiation or ozonation can be included as tertiary treatment to remove pathogens from wastewater, for example if it is to be discharged to a river or the sea where there body contact immersion recreations is practiced (Europe) or reused to irrigate golf courses (US).
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]
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 ...
A germicidal lamp (also known as disinfection lamp or sterilizer lamp) is an electric light that produces ultraviolet C (UVC) light. This short-wave ultraviolet light disrupts DNA base pairing , causing formation of pyrimidine dimers , and leads to the inactivation of bacteria , viruses , and protozoans .
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.
Disinfection is also typically included in the definition of conventional secondary treatment." [1]: 11 Biological nutrient removal is regarded by some sanitary engineers as secondary treatment and by others as tertiary treatment. [1]: 11 After this kind of treatment, the wastewater may be called secondary-treated wastewater. [citation needed]
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