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Water And a City
- 1. Water Water and a City Rebuilding an Urban Water Culture Biome Environmental Trust Shubha Ramachandran
- 5. How much water do I use ? Use Litres/person Drinking 3 Cooking 4 Bathing 20 Flushing 40 Washing-clothes 25 Washing Utensils 20 Gardening 23 Total 135 Real Consumption range : from 50 to 300 liters per person per day National Town planning Norms : Urban : 135 Lpcd Rural (Karnataka) : 55 Lpcd
- 6. WATER AVAILABILITY AND WHERE DOES MY WATER COME FROM ?
- 7. Cities search for water โขChennai: 235 km โขBangalore: 95 km โขDelhi: from Tehri dam (450 km). Chennai Veeranam lake Map of Tamil Nadu
- 8. Manjira dam Hyderabad Nagurjuna 105 km 100 km Himayat Sagar Osman Sagar
- 9. Vaitarna cum Tansa 90 km 105 km Mumbai Bhatsa
- 10. Bangalore need Bangalore Bangalore gets its water from the Cauvery 95 kms and 500 meters below the city
- 11. My water comes from a tap !!
- 12. My tap gets its water from an overhead tank...... .....to which water is PUMPED from my sump tank........ And My sump tank Gets water from ??
- 13. But Many people donโt Have โtapsโ at home !!!! (Many places donโt have City/municipal connections and many cant afford it) Where do they get their Water from ???
- 14. .... The unlucky many.....
- 15. โฆ..And the lucky fewโฆ.. Tankers or borewells ๏ borewells !!
- 17. .... Some (i think) clever lot.....
- 18. WHAT HAPPENS AFTER THE WATER HAS BEEN USED
- 19. What happens to all the water I have already used ?????? Use Litres/person Drinking 3 Cooking 4 Bathing 20 Flushing 40 Washing-clothes 25 Washing Utensils 20 Gardening 23 Total 135 I use clean water And i throw out Dirty water What happens to The rainwater that falls on My house ?
- 20. The Sewerage treatment plant Primary, Secondary and Tertiary treatment
- 21. โฆsewer and storm water drain networks โฆ. Sewage treatment plant Lakes And tanks
- 22. โฆbut then many times storm water and sewage water gets mixedโฆ. โฆ.. And lands up in lakes untreatedโฆ..
- 23. Photo : Norma Angelica Hernandez Bernal Ultimate source of all water : RAIN
- 25. Twin problems Urban FloodingWater Scarcity
- 26. PARADOX ?
- 27. Rainwater harvesting components: 1) Catchment 2) Conveyance 3) Filtration 4) Storage 5) Recharge <<< The saree is the Catchment, conveyance And filter !!!!!! The collection and storage of rain for future productive use
- 28. MONTH DAYS QUANTITY (mm) JAN 0.2 2.70 FEB 0.5 7.20 MAR 0.4 4.40 APR 3.0 46.30 MAY 7.0 119.60 JUN 6.4 80.80 JUL 8.3 110.20 AUG 10.0 137.00 SEP 9.3 194.80 OCT 9.0 180.40 NOV 4.0 64.50 DEC 1.7 22.10 TOTAL 59.8 970.00 Rainfall pattern in Bangalore 30 years data
- 29. How much water can I harvest
- 30. How much water do I use ? Use Litres/person Drinking 3 Cooking 4 Bathing 20 Flushing 40 Washing-clothes 25 Washing Utensils 20 Gardening 23 Total 135 Real Consumption range : from 50 to 300 liters per person per day National Town planning Norms : Urban : 135 Lpcd Rural (Karnataka) : 55 Lpcd
- 31. How much water can I harvest Plot Size Area(sqm) Avg 30mm rain runoff (KL) Annual 970mm rain runoff (KL) No of days of use 30ft x 40ft 110 3 96 142 60ft x 40ft 220 6 192 285 50ft x 80ft 367 10 321 475 ๏ท Assumed 5 member families with a daily per capita consumption of 135 litres ๏ท Assumed only 90% runoff from rooftops
- 32. โฆ.So how clean is Rainwater ?.... Rainwater in a Glass Cauvery water in a Glass - Guess Which is which ? A Bucket of Rainwater in Kurubarakunte village, Bangalore
- 33. A clean roof means clean water
- 35. Join all the pipesโฆโฆ
- 36. Bring it to a Storage
- 37. Clean Rainwater :FRS & Filtration
- 38. First rain separation โ let the rain clean the roof
- 39. Filter
- 42. Rain barrel : easiest way to begin rainwater harvesting
- 43. Storage
- 46. Groundwater recharge : Wells & Borewells
- 62. Digging an open well step by step First the soil is excavated to the desired depth. You may encounter rock or water inflow/seepage. The hole is normally 6โ-8โ wider than the external dia of the concrete rings. These wells can cost anywhere between 20k and 100k INR.
- 63. The soil is excavated to the required depth Concrete rings are lowered in one by one into the well Aggregate or jelly stones line the gaps between the rings This reinforces the well structure
- 71. MILLION WELLS !!
- 72. GROUND Water โ What DOES an individual do ? โ What DOES a City do ? โ What CAN an individual do ? โ What CAN a City do ?
- 73. PRINCIPLES ?
- 87. Waste Water โ What DOES an individual do ? โ What DOES a City do ? โ What CAN an individual do ? โ What CAN a City do ?
- 88. PRINCIPLES ??
- 89. THANK YOU !!