RAINWATER HARVESTING AND GREYWATER TREATMENT SYSTEMS FOR DOMESTIC APPLICATION IN INDIAD. ARIVUKKARASUAbstract Water is the most precious asset in this world; water shortage has been recognized as one of the key issues facing many countries. The water demand is still increasing due to population growth and higher standard of living. The use of domestic rainwater harvesting and greywater treatment systems has potential to supply nearly 20 to 30 percent of domestic water in India households. Wastewater is an immense resource which could have significant applications in regions of water scarcity. Greywater has particular advantages in that it is a large source with a low organic content. This study is aims in greywater recycling technologies, applications. It also suggests simple technologies that sand filters have been shown to achieve only a limited treatment of the greywater whereas membranes were reported to provide good removal of the solids. Disinfection of various microorganisms is achieved by chlorination. The best overall performances were observed within the schemes combining different types of treatment to ensure effective treatment of all the fractions. It has been estimated that water savings in the range of 1829 percent for an average household could be achieved by reusing greywater. Domestic rainwater harvesting and greywater treatment systems can play a very important role in future water management and prospective sustainable living in India.
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