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History of ultraviolet sterilization, deodorization and purification 2014-6-26 |
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| As early as 1878, human is discovered that the ultraviolet ray in sunshine has sterilization effect. In 1901 and 1906, human has invented the water silver arc the artificial ultraviolet light source and transmit ultraviolet performance good quartz tube material, marseille, a water plant for the first time in 1910 soon use ultraviolet disinfection process. Human of ultraviolet disinfection technology application in urban wastewater treatment, began in the middle of 1960 s, and in the 70 s to early 80 s the application of ultraviolet disinfection in urban sewage treatment was carried out a large number of earlier studies, this is mainly because at that time, people have realized that widely used in the process of chlorine disinfection of residual chlorine toxic to fish and other organisms in receiving waters, and find and confirm the chlorine disinfection and chemical disinfection methods can produce such as trihalomethanes (THMs) such as cancer, by-products to the distortion of the gene. These findings prompted human to seek a better method of disinfection. Water resources commission, Ontario, Canada in 1965 and 1965 to ultraviolet light |
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