Innovative Water Management. Guruprakash Sastry Regional Head Infrastructure/Green Initiatives

Transcription

1 Innovative Water Management Guruprakash Sastry Regional Head Infrastructure/Green Initiatives 1

2 About Infosys 2 nd largest IT company in India USD 10 Billion 200,000+ employees 45 million sq.ft. of space (including guest rooms) Campuses across India offices, training facilities, food courts, guest rooms, amenities, etc. Annual power consumption (FY2017) : 267 million kwh Annual water consumption (FY2017) : 3.2 billion liters Aggressive goals on energy and water consumption reduction Dedicated team of experts to drive efficiency initiatives 2

3 Water Efficiency Strategy Reduce Recycle Reuse 3

4 Water Efficiency by design New Buildings Building Type Infosys Design Standards National Building Code/UPCI Improvement Office buildings 25 liters/person 45 liters/person 45% Food Courts 40 liters/seat 70 liters/seat 43% Guest House 90 liters/person 135 liters/person 33% Shower 6 liters/min liters/min 50% Taps 1.9 liters/min 6-9 liters/min 68% WC 3-6 liters/flush 6-9 liters/flush 50% Significantly better than standards on all end use consumption benchmarks 4

5 Water Conservation in Existing Buildings End Use Consumption Strategies Low flow fixtures Taps, Shower heads, Health Faucets Pressure Compensating Aerators (PCA) Sensor controlled taps Dual flush system Pressure regulating valves at buildings Landscape retrofits, Native plantation Root zone irrigation Employee awareness campaigns Artificial Grass at Infosys Mysore Smart water metering 5

6 Water Conservation in Existing Buildings Water Distribution & Treatment Strategies Re-engineering & replacement of leaky distribution pipes Re-engineering & replacement of MS pipes for fire lines Efficient water treatment technologies EDR technology Using condensate water for cooling towers Employee awareness campaigns Over 100 km of pipe installed 26% reduction in per capita water consumption in Pune phase 2 campus through re-engineering and replacement of pipes 3 times higher life (50 years life span) 6

7 Water Recycling 100% of waste water is recycled and reused New Buildings/Campuses Existing Buildings/Campuses 100% of waste water is recycled Retrofits to upgrade treated water quality in line with new CPCB norms Efficient treatment technology - Membrane bioreactor (MBR) technology Retrofits to reduce waste water treatment cost Recycled water is used for irrigation, flushing and air-conditioning Dual piping system retrofits in existing buildings 100% Waste Water from buildings 100% REUSE Sewage Treatment Plants (STP) Flushing Irrigation Air-conditioning 7

8 Rain water harvesting Harvest 100% of on-site rain water Natural and Artificial lakes/ponds on campus to harvest rain water Roof top rain water harvesting systems (New & retrofits) Deep well injection system to recharge ground water 35 lakes across campuses in India Roof top rain water harvesting 270+ deep well injection systems (Holding capacity of 330 million liters) (Partially executed across campuses) (Recharge capacity of 13.5 million liters per day) 8

9 Efforts on Water Efficiency 9

10 Rain water harvesting on Infosys campuses 10

11 Rain water harvesting on Infosys campuses 11

12 Achievement on Water Efficiency 4 Monthly Consumption in KL / Employee liters/person per day in FY08 59 liters/person per day in FY17 12

13 Achievement on Water Efficiency Smart water metering implemented Real time monitoring of water balance in each campus Identify opportunities for improvement Identify leaks in the water network 13

14 Innovative Water Efficiency Strategies Soil moisture sensor - smart irrigation - over 30% savings Rain sensor - switch off irrigation system during rainfall - easy to install Condensate recovery from Air Conditioning system TR system 2000 liters/day possible - v useful in humid climate Rainwater harvesting sq.ft roof twice the requirement of a family of 4 14

15 Water conservation is critical Realize actual value of water You can only control what you measure Thank You 15