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Green buildings from the home to the city

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On how to go about thinking of a Green home from a house to a city.

On how to go about thinking of a Green home from a house to a city.

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  • 1. Green Buildings – from the home to the city Urban Permaculture ideas S.Vishwanath www.biome-solutions.com www.rainwaterclub.org You-tube, Twitter, Slide-share, Face-book : zenrainman 1
  • 2. What is permaculture ? • One definition (there are many ) • CREATING SUSTAINABLE HUMAN HABITATS BY FOLLOWING NATURE'S PATTERNS • Comes from permanent agriculture and then permanent culture 2
  • 3. Who is it for ? • It is for everyone wishing to live sustainable and tread more lightly on the Earth. 3
  • 4. Ethics • Earth care respecting the earth the source of life • People care Fair share Helping each other to live using the earths resource sustainably equitably 4
  • 5. Permaculture principles • Work with nature not against • See solutions not problems • Seek diversity not monoculture • Every element should serve many functions • Yield is limited only by imagination • Work in cycles and zones – Source Permaculture a beginners guide –G.Burnett 5
  • 6. Earth • The removal of good top soil for brick making destroys the soil in the peri-urban areas of cities • The use of sand for construction destroys rivers and water sources as well as land due to a process called filtered sand 6
  • 7. Earth • Every site has earth • In the design of the building incorporate earth • Remove the top soil and keep it • Design a basement to excavate earth • Use this to make earth blocks /cob/rammed earth for construction • The material for walls can come from the site • Sand requirement can be reduced by 50% – 60 % 7
  • 8. A basement provides earth for the house 8
  • 9. Making Earth Blocks at site 12
  • 10. RAMMED EARTH WALLING
  • 11. A thermally stable place
  • 12. 09/15/09
  • 13. 16
  • 14. What the city does/should do • Property tax rebate for earth construction • Approved as a building material in building codes • Encourage skill development in earth construction • Develop and encourage building codes 17
  • 15. Water • Water the city comes from the Cauvery 100 km away and 300 mts below • There is a limit of 1500 MLD available • Costliest water in Asia with embodied energy of 1.8 Units per Kilo-litre of water • SOLUTION • Use rainwater falling on the site wisely • Capture it as high as possible and store • With the excess, recharge groundwater • Recycle and reuse all water 18
  • 16. 19
  • 17. We need to return to the culture of the open well Where the well talks to us daily Where water can be drawn without electricity Where water can be recharged 20
  • 18. Collect rooftop rainwater 21
  • 19. A rain barrel to collect water from the stair-case roof 22
  • 20. A simple cloth filter to clean rainwater 23
  • 21. Checking rainwater for bacteria – h2s vial test 24
  • 22. SODIS- Using the sun to kill bacteria 25
  • 23. Keeping the roof clean is important 26
  • 24. What the city does • Made rainwater harvesting compulsory • For every square metre of roof area 20 litres of storage or recharge • About 100,000 buildings are harvesting rainwater • 100 ‘tanks’ or urban lakes are being revived 27
  • 25. Water table in Bangalore 30
  • 26. Energy • Use solar energy for – water purification – Cooking – Water heating – Lighting 31
  • 27. Solar cooking 32
  • 28. Use a bio-mass water heater 33
  • 29. Solar water heating 34
  • 30. Solar lighting 35
  • 31. What the city does • Solar water heaters now compulsory for new buildings • Bangalore has the single largest installations of solar water heaters in India 36
  • 32. Nutrients • Compost kitchen waste • Use ‘Eco-san’ principles and recycle nutrients 37
  • 33. 38
  • 34. Kitchen organics composter www.dailydump.org 39
  • 35. Use ‘Ecological Sanitation’ generated fertilizer 40
  • 36. 41
  • 37. • COMPOSTING TOILET (SQUATTING PAN) 42
  • 38. COLLECTORS 43
  • 39. BATHROOM LAYOUT 44
  • 40. What the city does The business of waste • Sewage treatment insufficient and not all households are connected • Untreated sewage is killing rivers though providing nutrients to farmers
  • 41. Vijayapura- falling groundwater tables
  • 42. Waste-water from the city
  • 43. Used productively
  • 44. Growing vegetables too
  • 45. STP’s need to be linked to reuse
  • 46. Nature as treatment
  • 47. Lake ecosystem
  • 48. • 37 acres on Sarjapur Road • 360 plots • No BWSSB supply • Only groundwater as source. • Incident rainfall =145 million litres
  • 49. What Rainbow Drive did • Banned private bore-wells • Shared community bore-wells 3 numbers • Made recharge as a community , over 260 recharge wells • Put in a place a tariff system based on true cost • Treated wastewater from WWTP being used for non-potable use • Now almost completely self sufficient for water
  • 50. What we need • Scientific inputs from the WHO guidelines for a sanitation safety plan and a waste-water reuse plan to manage negative impacts 58
  • 51. India Sanitation (Census 2011) Septic Tanks • (million) • Urban 30.09 • Rural 24.67 • Total 54.76 Pit toilets • (million) • Urban 55.97 • Rural 17.68 • Total 73 .65 • Grand Total 128.41
  • 52. Septic tanks and Pit Latrines Another 113 million rural households and 14 million urban households will build toilets and mostly pit toilets in the near future This represents a massive sludge management challenge
  • 53. Vacum sucking a pit latrine
  • 54. the honey-sucker can reach 250 feet
  • 55. It has eliminated manual scavenging
  • 56. There are 300 of them in Bangalore City
  • 57. The trucks are indigenously designed
  • 58. In many apartments a daily visit
  • 59. Nutrient value is recovered
  • 60. But how to avoid soil and groundwater pollution ?
  • 61. Nutrient analysis in progress
  • 62. Farmers have understood the nutrient value
  • 63. The crop
  • 64. The fruits
  • 65. Nutrient management policy • Solid waste management • Sewage management • Septage management • All on the basis of nutrient reuse. 74
  • 66. BEFORE AND AFTER ECOSAN CONSUMPTION (ltrs of water/day) • DRINKING 3 • COOKING 4 • BATHING 15 • CLOTHES 23 • UTENSILS 25 • GARDEN 25 • FLUSHING 40 • TOTAL 135 • 3 • 4 • 15 • 20 ECOSAN • 25 saving • 0 67.5 • 0.5 • 67.5 75
  • 67. Roof-scape Bengaluru........... 76
  • 68. Roofs are • Sterile, • Uninteresting and • Heat sinks • Yet they receive almost all of the rain, sun, wind and life 77
  • 69. 78
  • 70. Can roofs be smarter ? Since they receive – maximum – Can they solve a city’s – water, – storm-water, – energy, – wastewater, – Food and – bio-diversity problem ? 79
  • 71. How about? A roof that grows rice 80
  • 72. 81
  • 73. 82
  • 74. Uses only treated grey water to grow 83
  • 75. Harvests rain 84
  • 76. RAINWATER AND ECOSAN BANGALORE’S SCENARIO 100 SQ MT OF ROOF PRODUCES: • 97,000 LITRES RAIN • 88,000 LITRES HARVESTED DEMAND: 67.5 Ltrs/day X 4 pers X 365 = 98,550 LITRES OUTCOME: • 325 DAYS OF WATER DEMAND SUPPLIED FROM RAIN • ZERO SEWAGE RUNOFF • NUTRIENTS USED 85
  • 77. Uses the Sun 86
  • 78. Biome Environmental Solutions Pvt Ltd PROVIDES FOR BIODIVERSITY 87
  • 79. 88
  • 80. 89
  • 81. 90
  • 82. 91
  • 83. Roof produces and takes care of • 100 sq. mt. 100,000 litres of water • 100 sq. mt 200 kgs of rice and vegetables • 100 sq. mt. All the grey water –100 ltrs/day • 100 sq.mt All the urine 1500 litres / year • 100 sq. mt All the solid waste generated • 100 sq mt 32 different species of birds • 100 SQ mt heat 100 litres daily • Light 12 bulbs • Cook for 4 people lunch and dinner 92
  • 84. So what can a smart roof do? • Provide – Food security… and grow rice, banana, vegetables – Water security .. and treat waste water – Energy security… and keep the house cool – Ecological security… and help save the sparrow 93
  • 85. 94
  • 86. 95
  • 87. 96
  • 88. The future then… 60% of built Bangalore or any metropolis is roofs. What do we do about them? Heat sinks or Designed Ecological spaces The choice is ours. 97
  • 89. 98