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9. Ultraviolet (UV)
see also [ , § 6].
9.1 Introduction
For several decades, a physical disinfection process has been used in drinking water production: ultraviolet radiation.
The term UV is used for radiation in the electromagnetic spectrum with wavelengths between the visible and X-rays, i.e. from 100 to 400 nm.
Within this spectrum, we also distinguish several families classified alphabetically by decreasing wavelength UV-A/UV-B/UV-C... (see figure 27 ).
UV-C (200 to 280 nm) is the only germicide (destroying bacteria, viruses, fungi, algae...
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Ultraviolet (UV)
Membranes
Current legislation on disinfection
1 Microbiology
WHO (World Health Organization) recommendations for Europe (see tables 4 and 5 ), and the USA (see table
Suppliers
UV material (figure )
Berson www.bersonuv.com
Calgon/Chemviron Carbon www.catalyticcarbon.com/ccc/tech/technologies/uv/
Ozonia www.ozonia.com/uv/uv
Trojan/Hach/Aquafine www.trojanuv.com
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