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AWWA QTC97017
- In Situ Electrolytic Disinfection (ISED)
- Conference Proceeding by American Water Works Association, 01/01/1997
- Publisher: AWWA
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The early industrial production of chlorine and its compounds was based on the electrolysis of an aqueous solution of sodium chloride. By the 1970s, this technology had become simple and inexpensive enough to allow the manufacture of small electrolytic devices that could generate chlorine on site. The electrolytic method has been found to generate not only chlorine but amounts of other oxidating gases such as ozone and various oxygen species, all of which have relatively short lives. The mixture of these gases is a better oxidant and disinfectant than the chlorine alone and can work properly if it is injected into water immediately after it is generated. In 1982, the Panamerican Health Organization(PAHO)/World Health Organization decided to promote a continent-wide program to push ahead the development of MOGGOD (Mix of Oxidating Gases Generated On site for Disinfection) devices. This paper, based PAHO's experience in various South American countries, presents the basic principles and applications of this emergent technology.
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