AIWW Session: Water Resilient Cities 20 June 2019, Amsterdam KALA VAIRAVAMOORTHY, Executive Director, IWA
We require a level of leadership and innovation unprecedented in our history complexity in transitioning to one water solutions We live in the ‘now’ deep uncertainty associated with global change pressures
CSt & ASh
Decisions need to be made about are aging & outdated infrastructure
The IWA Principles for Water-Wise Cities Regenerative Water Services for all Water Sensitive Urban Design Cities & Watershed Stewardship Building water-wise communities
The IWA Principles for Water-Wise Cities Regenerative Water Services for all Water Sensitive Urban Design Cities & Watershed Stewardship Building water-wise communities
The IWA Principles for Water-Wise Cities Regenerative Water Services for all
We need to have a systems perspective of the water cycle Stormwater/ Rainwater
Groundwater Surface water
Leakage management Desalination
Black water
Grey water
Demand management
Modelling allows us to connect all flows with productive uses
SURFACE WATER/GROUNDWATER/DESALINATION)
WATER SUPPLY
IRRIGATION
KEY
RAINWATER/ STORMWATER HARVESTING
COMM/DOM/IND/USE
GREYWATER REUSE
POTABLE WATER RAIN/STORMWATER
WASTEWATER TREATMENT
GREY WATER RECLAIMED WATER BLACK WATER RECEIVING BODY (SUSRFACE/GROUNDWATER)
Changing our perspective creates opportunity to do things differently Resource Recovery & Reuse (RRR)
Energy: electric (microturbines) Nutrients: P & N
Energy: Biogas, bioelec, biofuels, MFC
Nutrients: P & N
Energy: Heat, electric (microturbines)
Important to understand the business model Key Partners
Key Activities
Key Resources
Cost Structure
Value Proposition
Customer Relationships
Channels
Revenue Streams
Customer Segments
The IWA Principles for Water-Wise Cities Regenerative Water Services for all Water Sensitive Urban Design Cities & Watershed Stewardship Building water-wise communities
The IWA Principles for Water-Wise Cities
Water Sensitive Urban Design
We are living in an uncertain world
Uncertainty in storm events
Uncertainty in pipe condition
Uncertainty in demand
Uncertainty in quantity & quality
Uncertainty in energy
Uncertainty in water allocation
We need adaptive/flexible smart systems for an uncertain world
2010
2020
2030
2040
2050
2060
LID’s are modular in nature eco-treatment
infiltration trench
green roofs
tree filters
pervious pavement
retention pond
LID’s provides modular diversity that increases flexibility resulting in a complex adaptive system
LID’s provide adaptive capacity
Urban Urbanization
Early Urban
Time
LID’s performance better against diverse future scenarios = higher flexibility Case Study: Kupferzell Germany Hydraulics
Water Cycle
Economics
Pollution Load
Technical Issues
Amenity
Urban Planning
LID
Sewers
Utility Value
Opt
Scenario 1
Scenario 2
Scenario 3
Scenario 4
Eckart, Sieker, Vairavamoorthy (2010)
These perspectives lead to a more decentralized type of thinking? Decentralization well suited for: • Energy recovery (heat recovered and used close to source) • Minimizing energy consumption (for moving water) • Source separation (to maximize nutrient recovery) • Adjusted growth (to deal with rapid growing cities) • Increased resiliency (dampens the propagation of failures)
The IWA Principles for Water-Wise Cities
Cities & Watershed Stewardship Building water-wise communities
It’s ok to optimize at sub-system level
Water
It’s ok to optimize at sub-system level
Water
Urban Ecology
Energy
Building and Urban Form
Transportation
Solid Waste
But we need to recognize that we’re dealing with a ‘system of systems’
Energy
Water
Flood Mitigation, Pollution Reduction GW Recharge Urban Ecology
GI reduces energy Carbon Co-digestion for water Sequestration (Biogas Production)
Transportation
Reduce Energy Demand Filter/ Reduce Air Pollution
Building and Urban Form
Shading/ Reduce Urban Heat Island
Waste Neutralization
Solid Waste
At watershed level also ‘system of systems’ Urban/Peri Urban
Energy & Industry
Reused Water
Flood Mitigation, Pollution Reduction GW Recharge
Ecosystems
Co-digestion (Biogas Water Efficiencies Efficiencies (+) Production) Water (-) Carbon GI reduces energy Sequestration for water
Agriculture
Choices Before Us Stay in Lane
Try Harder
Paradigm Shift
Business as Usual
Spend More for Traditional Sys
Truly Different Approach
What You What You Know.. Know..
What You Don’t Know..
Principles for Water Wise Cities Moving forward – IWA Platform For knowledge exchange among signatories Sharing case studies and best practice Identifying challenges and barriers Encourage peer to peer learning Inspire other cities to transition Partner with IWA to activate actors of change
Who to contact? Corinne Trommsdorff, Corinne.Trommsdorff@iwahq.org
30 urban regions endorsed
100+ individuals and companies
3 Partners powering up the initiative: Arup, CRC for water Sensitive Cities, Greater Paris Sanitation Authority.
Thank you!
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