Chlorine is the most common and effective disinfectant at the moment is. Among the chlorine-free water purification methods, ultraviolet radiation, the copper and silver ions, ozonation, the use of preparations of the active oxygen of the organic polymer are widespread. In some cases a combination of above mentioned methods is the most effective. Nowadays, new technologies allow to use following methods for water perification. UV-radiation of a certain wavelength and intensity, when exposed for some time to microorganisms, damages their DNA, making them incapable of reproduction. This principle is based on UV disinfection, it kills even those bacteria which ...
Essays on Chlorination
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Background information
The need for clean water for use by humanity has since time immemorial been an area of concern with scientists and scholars inventing methods that prove to be more efficient than their predecessors. The ultimate goal has always been the removal of undesirable chemicals and pathogens that would, however, render the water unfit for human and industrial consumption. In today’s contemporary society, human activity has culminated into pollution of the natural environment including water catchment areas. This has therefore made water unfit for consumption thereby prompting for more cost-effective and efficient methods for purification of this natural resource. ...
Chlorine is used in water treatment to reduce or eradicate microorganisms, for instance, bacteria or viruses found in water (EPA, 2011). The use of chlorine for the treatment of drinking water has significantly reduced the risks or exposures to water-borne infections or diseases. Besides, the supplies of safe or treated drinking water are paramount for the health as well as the general well-being of the public. Untreated water sources, for example, streams, boreholes, dams, wells, or rain water can harbor certain harmful or dangerous microorganisms, which when consumed may cause serious infections such as cholera, dysentery, or typhoid, as ...