Chlorine dosing
Chlorine is a very strong oxidant that kills many micro-organisms.
Chlorination is the process of adding chlorine to water as a method of water purification to make it fit for human consumption. Water which has been treated with chlorine is effective in preventing the spread of disease.
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Chlorination is mainly used on large scale systems where the point of use is away from the source or storage tanks are being used. A chlorine dosing pump will add a carefully measured amount of diluted chlorine to the system as the water passes into a tank. The amount of chlorine in the water needs to be monitored continuously to ensure the level stays within the recommended limits, too little and not all the contaminants will be destroyed, too much is bad for human health. |
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The chlorination of public drinking supplies was originally met with resistance, as people were concerned about the effects on human health. The practice is now widely accepted and has greatly reduced the prevalence of waterborne diseases. It is effective against almost all bacteria and viruses as well as algae, fungi, some minerals and man-made chemicals pollutants. As with mains water a small amount of disinfectant is usually intentionally left in the water at the end of the treatment process to reduce the risk of re-contamination in the distribution system.