Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Rain water harvesting

1,047 views

Published on

Rain Water harvesting is very useful nowadays, as there are more demand for water and less supply. It is something very precious to preserve rain water by using some techniques.

Published in: Technology, Business
  • Be the first to comment

Rain water harvesting

  1. 1. Presenter names: Ruksana Taj, Rajashri N.S.
  2. 2. Rain Water Harvesting Presented By: Rajashri N.S.
  3. 3. What Is Rainwater harvesting?  The process of collecting and storing rain water in a scientific and controlled manner for future use is called rain water harvesting.
  4. 4. REASONS OF SHORTAGE OF WATER  Population increase.  Industrialization.  Urbanization.  Decrease in surface area of Lakes, tanks etc.  Deforestation. (i) Less precipitation. (ii) Absence of Barriers.
  5. 5. BENEFITS OF RWH  Rain water is a ultimate source of fresh water.  Rain water harvesting helps to over come water scarcity. Rainwater harvesting prevents flooding of low lying areas. Rainwater harvesting systems are simple to install, operate, and maintain.
  6. 6. Why Rain water be harvested?  Surface water is inadequate to meet our demand and we have to depend on ground water.  Due to rapid urbanization, infiltration of rain water into the sub-soil has decreased drastically and recharging of ground water has diminished.
  7. 7. Methods of Rain water harvesting  Collection of roof top rain water .  Construction of seepage pits.  Construction of check dams.  Recharging tube wells.  Construction of ponds and dams.  Construction of ponds and dams.  Erection of bunds.
  8. 8. Collection of roof top rain water
  9. 9. Construction of seepage pits
  10. 10. Construction of check dams
  11. 11. Recharging tube wells
  12. 12. Construction of ponds and tanks
  13. 13. Erection of bunds
  14. 14. Advantages and disadvantages of RWH. Advantages  Simple Construction  Ease of Maintenance  Systems are Flexible and Adaptable Disadvantages  Vulnerable Water Quality  Water Supply is Climate Dependent  Storage Capacity is Limited
  15. 15. Conclusion  IN DENSELY POPULATED COUNTRIES LIKE INDIA, THE DEMAND FOR WATER GOES ON INCREASING WITH INCREASE IN POPULATION. HENCE IT IS NECESSARY TO ADOPT RAIN WATER HARVESTING.
  16. 16. Thank you

×