What is Chlorine and why is it used in water?
Chlorine A chemical element with strong oxidising properties. Because of that it is used as a disinfectant in water treatment and water supply. Chlorine gas is very toxic and difficult to handle and only used in high volume commercial applications. In most cases chlorine is applied as sodium or calcium hypochlorite. Chlorine tends to combine with organic and inorganic nitrogen compounds forming chloroamines. This “combined chlorine” is a less powerful disinfectant than “free chlorine”.
