Sand filters are quite popular as they help filter
Sand filters are quite popular as they help filter smallest elements. Therefore, they have been quite popular since 1800s. Over the years, researchers improved this method to ensure better results. For water purification, the two common chemical processes are used. They are known as flocculation and chlorination. In these methods, chemical components are added to the dirty water to clear it from unwanted particles. They include inorganic particles as well. Another most common method includes chlorine disinfection. However, the downside is that chlorine is not good for your health. Usually, chlorine is used in swimming pools. In 1854, cholera became epidemic in London. Then chlorine was used for water disinfection. It was used to disinfect the supply lines of water. In 1879, another expert William Soper treated typhoid patients using chlorinated lime. Since there were a huge number of casualties, the technique of long-term water chlorination was used. We don't use the old sand filters anymore. Today, we use chlorine of lime to put an end to this type of epidemics. As far as efficacy is concerned, this method is quite good. Plus, it's also quite safe for both you and your kids. However, the amount of chlorine in water should be less than 2 PPM. In the US military, calcium hypochlorite is put in a Lister bag as an effective means of disinfecting drinking water. Today, boiling water is still the common method to purify water. Home users are still following this practice in order to kill microorganisms found in water. All you need to do is wrap a used piece of rag around the water hose, and it will help you achieve the purpose. Article Source: http://EzineArticles.com/10281967
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