To determine chlorine in given water sample project intro
Answers
Explanation:
Purification of Water There are many methods for the purification of water. Some of them are Boiling Filtration Bleaching powder treatment SODIS (Solar Water Disinfection) And the list goes on.... Boiling is perhaps the most commonly used water purification technique in use today. While in normal households it is an efficient technique; it cannot be used for industrial and large scale purposes. It is because in normal households, the water to be purified is very small in quantity and hence the water loss due to evaporation is almost negligible. But in Industrial or large scale purification of water the water loss due to evaporation will be quite high and the amount of purified water obtained will be very less. Filtration is also used for removing foreign particles from water. One major drawback of this purification process is that it cannot be used for removing foreign chemicals and impurities that are miscible with water. SODIS or Solar Water Disinfection is recommended by the United Nations for disinfection of water using soft drink bottles, sunlight, and a black surface-- at least in hot nations with regularly intense sunlight. Water-filled transparent bottles placed in a horizontal position atop a flat surface in strong sunlight for around five hours will kill microbes in the water. The process is made even more safe and effective if the bottom half of the bottle or the surface it's lying on is blackened, and/or the flat surface is made of plastic or metal. It's the combination of heat and ultraviolet light which kills the organisms. The major drawback of this purification technique is that it cannot be used in countries with cold weather. Also, the time consumed for Purification process is more and it also needs a 'blackened' surface, much like solar cookers.