Isn t Ozone in the Atmosphere?
Ozone is present in the upper atmosphere where it serves to shield the earth from radiation. It may also be present in city atmospheres where it is formed by ultraviolet radiation reacting with oxygen and smog. Since ozone is hazardous to breath, ozone is a common reason for air quality (or smog) alerts in cities. What is Ozone Used for? The major use of ozone is to disinfect drinking water. In addition to bacteria which are killed by ozone, chlorine or hydrogen peroxide, ozone also kills cysts, such as cryptosporidium, which have been associated with health problems caused by drinking water in some cities. Aside from drinking water, what is ozone used for? Ozone is also used to treat certain industrial wastewaters which contain either difficult to oxidize hazardous substances or are highly colored. The treatment of dye-laden waste streams from textile plants is a notable example. Ozone is also used to bleach pulp as an alternative to chlorine and chlorine dioxide. Ozone is also now be
