Innovative Water Management - UN ESCAP Infosys - ESCAP wate… · Water Management Guruprakash...
Transcript of Innovative Water Management - UN ESCAP Infosys - ESCAP wate… · Water Management Guruprakash...
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Innovative Water ManagementGuruprakash Sastry
Regional Head – Infrastructure/Green Initiatives
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About
Infosys
• 2nd largest IT company in India – USD 10 Billion
• 200,000+ employees
• 45 million sq.ft. of space (including 14710 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
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Water Efficiency
Strategy
Reduce
Recycle Reuse
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Water Efficiency by design
New Buildings
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 12-16 liters/min 50%
Taps 1.9 liters/min 6-9 liters/min 68%
WC 3-6 liters/flush 6-9 liters/flush 50%
ImprovementInfosys Design
StandardsBuilding Type National Building
Code/UPCI
Significantly better than standards on all end use consumption benchmarks
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Water Conservation in
Existing Buildings
End Use Consumption Strategies
Low flow fixtures – Taps, Shower
heads, Health Faucets
Pressure Compensating Aerators
(PCA)Sensor controlled taps
Pressure regulating valves at
buildings
Landscape retrofits, Native
plantation
Root zone irrigation Employee awareness campaigns
Dual flush system
Artificial Grass at
Infosys MysoreSmart water metering
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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
26% reduction in per capita water consumption in Pune phase 2
campus through re-engineering and replacement of pipes
Over 100 km of pipe installed
3 times higher life (50 years life span)
New Buildings/Campuses Existing Buildings/Campuses
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Water Recycling
100% of waste water is recycled and reused
100% of waste water is recycled
Efficient treatment technology - Membrane bio-
reactor (MBR) technology
Recycled water is used for irrigation, flushing and
air-conditioning
Retrofits to upgrade treated water quality in
line with new CPCB norms
Retrofits to reduce waste water treatment
cost
Dual piping system retrofits in existing buildings
100% Waste Water
from buildings
Sewage Treatment Plants
(STP)
Flushing
Irrigation
Air-conditioning
100% REUSE
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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)
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Efforts on
Water Efficiency
Rain water
harvesting on
Infosys
campuses
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Rain water
harvesting on
Infosys
campuses
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2011-12 2012-13
3.28 3.3 3.32
3.07
2.47
2.17 2.15 2.21
1.921.77
0
0.5
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1.5
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2.5
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3.5
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2016-172007-08 2008-09 2009-10 2010-11 2013-14 2014-15 2015-16
Month
ly C
onsum
ption in
KL / E
mplo
yee
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Achievement on
Water Efficiency
109 liters/person per day in FY08 � 59 liters/person per day in FY17
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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
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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
- 100 TR system � 2000 liters/day possible
- v useful in humid climate
• Rainwater harvesting
- 2000 sq.ft roof � twice the requirement of a family of 4
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Water conservation is critical
• Realize actual value of water
• You can only control what you measure
Thank [email protected]