During chlorination chlorine is added to water which produces nascent oxygen.Thic nascent oxygen kills all harmful germs and bacteria present in water
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The first continuous use of chlorine to disinfect a U.S. water supply occurred at Boonton Reservoir—the water supply for Jersey City, New Jersey. As recounted in a forthcoming book (The Chlorine Revolution), two trials defined the need for disinfection and documented how it happened. In the second Jersey City trial, Dr. John L. Leal claimed that chlorine was not responsible for killing bacteria. Instead, he put forth the long-standing theory that chlorine when added to water liberated something called nascent oxygen, and it was the nascent oxygen was responsible for disinfection. (McGuire 2013)
The concept of nascent oxygen originated with James Watt, who described the importance of liberated oxygen in the bleaching process. An equation suggested by Watt (Race 1918) showed chlorine producing oxygen when it was dissolved in water:
Cl2 + H2O = 2HCl + O
In which Cl2 = chlorine, H2O = water, HCl = hydrochloric acid, and O = nascent oxygen.
In a later, well-known publication, Albert D. Hooker stated the theory most clearly: “It should be well understood that chloride of lime, in its industrial application of bleaching, deodorizing, or disinfecting, does not act by its chlorine, but by its oxygen.” (Emphasis in original.) (Hooker 1913)
In 1918, Joseph Race described the controversy surrounding chlorine’s mode of action in water. Race stated that Fischer and Proskauer (1884) believed that chlorine was not directly toxic.
The concept of nascent oxygen originated with James Watt, who described the importance of liberated oxygen in the bleaching process. An equation suggested by Watt (Race 1918) showed chlorine producing oxygen when it was dissolved in water:
Cl2 + H2O = 2HCl + O
In which Cl2 = chlorine, H2O = water, HCl = hydrochloric acid, and O = nascent oxygen.
In a later, well-known publication, Albert D. Hooker stated the theory most clearly: “It should be well understood that chloride of lime, in its industrial application of bleaching, deodorizing, or disinfecting, does not act by its chlorine, but by its oxygen.” (Emphasis in original.) (Hooker 1913)
In 1918, Joseph Race described the controversy surrounding chlorine’s mode of action in water. Race stated that Fischer and Proskauer (1884) believed that chlorine was not directly toxic.
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