Rainwater harvesting

850 views

Published on

Published in: Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
850
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
44
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Rainwater harvesting

  1. 1. RAINWATER HARVESTING By:- Ayush Class – 9’A’ Roll No - 10
  2. 2. WHAT IS RWH? RWH refers to collection and storage of rainwater and also other activity such as harvesting surface water extracting ground water , prevention of loss through evaporation and seepage
  3. 3. PURPOSES OF RWH Stored for ready use in containers ground or below ground Charged into the ground for withdrawal later
  4. 4. BENEFITS OF RWH Rainwater harvesting prevents flooding of lowlying areas Rain water harvesting replenishes the ground water table and enables our dug wells and bore wells to yield in a sustained manner It helps in the availability of clean water by reducing the salinity and the presence of iron salts
  5. 5. RHH TECHNIQUES STORAGE OF RAINWATER ON SURFACE FOR FUTURE USE RECHARGE TO GROUND WATER
  6. 6. STORAGE OF RAINWATER ON SURFACE FOR FUTURE USE CHECK DAMS RAINWATER HARVESTING FROM ROOFTOP CATCHMENTS SUBSURFACE DAMS FARM PONDS
  7. 7. SUBSURFACE DAMS
  8. 8. CHECK DAMS
  9. 9. RAINWATERRAINWATER HARVESTING FROMHARVESTING FROM ROOFTOP CATCHMENTSROOFTOP CATCHMENTS
  10. 10. ADVANTAGES OF RWH PROVIDES SELF- SUFFICIENCY TO YOUR WATER SUPPLY REDUCE THE COST FOR PUMPING GROUND WATER REDUCE SELF EROSION IN URBAN AREAS RAINWATER HARVESTING SYSTEMS ARE SIMPLE WHICH CAN BE ADOPTED BY INDIVIDUALS PROVIDE HIGH QUALITY WATER THROUGH DILUTION WHEN RECHARGE TO GROUND WATER IT CAN IMPROVE THE ENGINEERING BUILDING FOUNATION WHEN CISTERNS ARE BUILD AS PART OF THE SUBSTRUCTURE OF THE BUILDINGS, AS IN THE CASE OF MANDATORY CISTERNS
  11. 11. DISADVANTAGES OF RWH TAKE CONSIDERABLE AMOUNT OF TIME TO PAY FOR ITSELF LEKAGE FROM CISTERNS CAN CAUSE THE DETERIORATION OF LOAD BEARNG SLOPES THE SUCCESS OF RAINFALL HARVESTING DEPENDS UPON THE FREQUENCY AND AMOUNT OF RAINFALL THEREFORE IT IS NOT A DEPENDABLE WATER SOURCES IN TIMES OF DRY WEATHER OR PRONGED DRAUGHT
  12. 12. THANK YOU

×