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ApartmentADDA: Sewage to Potability - Water Conservation workshop on Tzed Homes

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This Slideshare is about a presentation by Srinivasan Sekar in the Water Workshop for Apartments, on 21-June-2014.The limelight of the day’s seminar was the case study presentation of TZED Homes from Whitefield, Bangalore.

"Winner of ApartmentADDA’s first Rise High Award, for sustainable water management; this amazing community called Tzed Homes which is 100% sustainable".

They do not use any tankers, they just use 2 bore wells, recharging the same amount of water withdrawn, into the ground again. Amazing right? And who else is best suited to talk about it than Mr. Alok Kuchlous and Mr. Srinivasan Sekar from TZED Homes, who spearheaded a series of changes in their community to achieve this amazing feat. Being in Bangalore, which is known for its woes regarding water, where majority of water needs in apartments are met by supply through water tankers, this “Rockstar” apartment’s achievement is really exemplary.

How did TZed Homes actually convert Sewage water to Drinkable Water?
http://apartmentadda.com/blog/blog/2014/10/15/water-conservation-workshop-blog-series-chapter-2-water-positive-tzed-ho/

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ApartmentADDA: Sewage to Potability - Water Conservation workshop on Tzed Homes

  1. 1. Sustainability for a Greener Planet Sewage to Potability: The How of Transformation Srinivasan Sekar Owner at Tzed Homes Founder CEO and Managing Director, TerraCura Solutions Private Limited Srinivasan.sekar@terracura.in Ph: 9900102008 Presented at Workshop conducted by:
  2. 2. Sustainability for a Greener Planet Key Essentials of Civilized Living 2Copyright 2014 Presented at Workshop conducted by:
  3. 3. Sustainability for a Greener Planet Water and Waste Water – the Twin Challenges of Urban India Urban Water Supply is a perennial problem for all city Governments, Residences, Businesses... Sewage Treatment is still a major challenge for high-rise buildings, industries and city governments. – How to sustainably treat waste – What to do with water extracted from waste – What to do with sludge from waste 3Copyright 2014 Presented at Workshop conducted by:
  4. 4. Sustainability for a Greener Planet TZED Homes – The Challenges in 2012 The Problem: • Summer of 2012 – Severe Water Shortage; campus had 3 shallow borewells (250- 300 feet deep), which had been providing water from 2006-12 (6 years) and suddenly dried up. • 10 tankers of water every day was still not sufficient for 24X7 water. Design Constraints and Existing Condition: • Campus Plumbing done such that same pipes that fed water to toilet flushes in one level were connected to kitchen sink in another level; each house had 5 to 7 inlets, making it impossible to do re-plumbing without a lot of destruction and hardships. • Campus had centralized RO system that supplied 70-90KLD water for all needs except for carwash and garden. • Sewage Treatment Plant was newly repaired after severe malfunction, and there was a wealth of knowledge in the campus due to the renewal on maintenance of STP. • Campus had a 4-lakh Litre Rainwater tank, but the RWH was partially implemented and not effective; General Body gave full support to fix the Rainwater Harvesting System to harvest rain water in the 4-Lakh Litre sump. 4Copyright 2014 Presented at Workshop conducted by:
  5. 5. Sustainability for a Greener Planet WATER SET UP IN TZED in 2012 – before the changes Terrace Water piped down Recharge Wells Central Road Rainwater Car Wash Drain Coarse Filters (not maintaine d) Coarse Filter 4Lakh Liter Rainwater Tank RO System STP 4-stage Treatment Plant Bor ewe lls Water Tankers To Homes From Homes To Gardens and Car Wash 5Copyright 2014 Presented at Workshop conducted by:
  6. 6. Sustainability for a Greener Planet Water Statistics • 94 homes/families live in 5 acre campus with plenty of gardens and trees. • Average consumption per home (4 people average) ranged from a low of 400 to a high of 1000. Target average for the entire community was 500 L per home. • R/O water pumped was 60,000 LPD and went upto 80,000 LPD. This resulted in investigation and fixing of leaks both within apartments and in some pipelines. Current average pumping is about 50,000 LPD. R/O Reject is around 30,000 LPD. Total water requirement is between 80,000 LPD and 90,000 LPD. • STP treated water averages to about 30 KLPD to 40 KLPD. • Initial state was that R/O Reject water was discarded in storm water drains, or mixed with STP treated water and sent to recharge wells. STP treated water was used for gardens and car wash and excess was sent to recharge wells (over 44+ wells across the 5 acre campus). • Goal was to recover as much water for repeated use, and send only excess to recharge wells. 6Copyright 2014 Presented at Workshop conducted by:
  7. 7. Sustainability for a Greener Planet Solution Approach • Harvest Rain water – 4 Lakh Liter sump existed already. • Creatively reuse waste water – RO Reject water was sizeable and was being let into storm water drains. • Excess STP-treated water (beyond garden use and car wash) was being let into recharge wells. Copyright 2014 7 Presented at Workshop conducted by:
  8. 8. Sustainability for a Greener Planet Solution Approach – cont’d Key Approaches that contributed to the project success were: • Communication – Transparency, Repeated and open approach, Use of data for discussions • Scientific Basis – Research, Pilot, Prototype, Scale • Team Inclusiveness – Bring everyone into the fold; use collaboration for solutions; incorporate suggestions from many Copyright 2014 8 Presented at Workshop conducted by:
  9. 9. Sustainability for a Greener Planet DRAFT 1: RAINWATER HARVESTING ONLY Terrace Water piped down Recharge Wells Central Road Rainwater Car Wash Drain Coarse Filters (not maintaine d) Coarse Filter 4Lakh Liter Rainwater Tank RO System STP 4-stage Treatment Plant Bor ewe lls Water Tankers To Homes From Homes To Gardens and Car Wash 3-stage Filter -Coarse -Charcoal/ Sand -Softening Recommen ded Alternate To Recharge Wells Excess 9Copyright 2014 Presented at Workshop conducted by:
  10. 10. Sustainability for a Greener Planet DRAFT 2: INCLUDE TREATED STP WATER Terrace Water piped down Recharge Wells Central Road Rainwater Car Wash Drain Coarse Filters (not maintaine d) Coarse Filter 4Lakh Liter Rainwater Tank RO System STP 4-stage Treatment Plant Bor ewe lls Water Tankers To Homes From Homes To Gardens and Car Wash 3-stage Filter -Coarse -Charcoal/ Sand -Softening Recommen ded Alternate To Recharge Wells Excess 10Copyright 2014 Presented at Workshop conducted by:
  11. 11. Sustainability for a Greener Planet FINAL IMPLEMENTATION STP Treatment Plant Sand Filter Carbon Filter Chlorine Sand Filter Activated Carbon Filter Ozonizer RO System Rain water 4 Lakh L Tank Borewell/ Tanker water 11Copyright 2014 Presented at Workshop conducted by:
  12. 12. Sustainability for a Greener Planet TZED TODAY • STP Treated Water consistently tested better quality than tanker and bore well water in all aspects. • Primary use of STP treated water is for garden and car wash. • RO Reject water mixed with STP treated water and used for gardens, car wash and house keeping (common area mopping, etc). • Use of RO Reject water reduced need of STP treated water; balance is mixed with rainwater and borewell water and reused in the RO system. 30% reduction in water needs for the campus, resulting in complete stoppage of tankers. • Constant education on water conservation led to fixing of all leaks, water efficient flushes installed in homes, and re-plumbing of worn- out pipes with leaks. • RO water still of the same quality even with STP treated water through additional redundant filters, as it was with only borewell and tanker waters. 12Copyright 2014 Presented at Workshop conducted by:
  13. 13. Sustainability for a Greener Planet Water Conservation 13Copyright 2014 Presented at Workshop conducted by:
  14. 14. Sustainability for a Greener Planet QUESTIONS? Thank You for your attention. 14Copyright 2014 Presented at Workshop conducted by:

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