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Evaluation of Ozone and Ultraviolet Light

Evaluation of Ozone and Ultraviolet Light

J. Malley
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The objectives of this project were to: evaluate the benefits of ultraviolet light and ozone and determine how to integrate the two disinfection systems efficiently; compare medium pressure UV light with the combination of ozone and MP-UV to determine their effectiveness in meeting CT requirements for inactivation of Giardia, Cryptosporidium, and viruses, especially in cold water; and compare the effects of MP-UV and the combination of ozone and MP-UV on the formation of disinfection by-products, DBP precursors, and the biostability/bacterial regrowth potential. Protozoan parasites are a major public health concern as evidenced by waterborne outbreaks of Cryptosporidium in the early 1990s. USEPA regulators have proposed new regulations which require site-specific means corresponding to the source water for the removal or inactivation of Cryptosporidium. For water systems with vulnerable sources, UV disinfection offers a cost effective approach. Utilities that have already installed ozone systems and those considering a multiple barrier approach to disinfection are interested in the effectiveness of UV alone and UV combined with ozone.
Language
English
Pages
144
Format
Paperback
Publisher
IWA Publishing (Intl Water Assoc)
Release
March 01, 2006
ISBN
1843399334
ISBN 13
9781843399339

Evaluation of Ozone and Ultraviolet Light

J. Malley
0/5 ( ratings)
Read Download
The objectives of this project were to: evaluate the benefits of ultraviolet light and ozone and determine how to integrate the two disinfection systems efficiently; compare medium pressure UV light with the combination of ozone and MP-UV to determine their effectiveness in meeting CT requirements for inactivation of Giardia, Cryptosporidium, and viruses, especially in cold water; and compare the effects of MP-UV and the combination of ozone and MP-UV on the formation of disinfection by-products, DBP precursors, and the biostability/bacterial regrowth potential. Protozoan parasites are a major public health concern as evidenced by waterborne outbreaks of Cryptosporidium in the early 1990s. USEPA regulators have proposed new regulations which require site-specific means corresponding to the source water for the removal or inactivation of Cryptosporidium. For water systems with vulnerable sources, UV disinfection offers a cost effective approach. Utilities that have already installed ozone systems and those considering a multiple barrier approach to disinfection are interested in the effectiveness of UV alone and UV combined with ozone.
Language
English
Pages
144
Format
Paperback
Publisher
IWA Publishing (Intl Water Assoc)
Release
March 01, 2006
ISBN
1843399334
ISBN 13
9781843399339

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